DR. GREGORY F HOLLAR D.O.
NPI 1063462653
Family Medicine in Centennial, CO


Quality Rating: 94.99 out of 100 score

NPI Status: Active since May 12, 2006

Contact Information

7030 S YOSEMITE ST
SUITE 220
CENTENNIAL, CO
ZIP 80112
Phone: (303) 721-9984
Fax: (303) 996-3278

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  • Individual
  • Male
  • Years of Experience 44
  • Family Medicine
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About GREGORY HOLLAR

This page provides the complete NPI Profile along with additional information for Gregory Hollar, a primary care provider established in Centennial, Colorado with a medical specialization in Family Medicine and more than 44 years of experience. He graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 1982. The healthcare provider is registered in the NPI registry with number 1063462653 assigned on May 2006. The practitioner's primary taxonomy code is 207Q00000X with license number 25423 (CO). The provider is registered as an individual and his NPI record was last updated 8 years ago.

NPI
1063462653
Provider Name
DR. GREGORY F HOLLAR D.O.
Gender
Male
Entity Type
Individual
Location Address
7030 S YOSEMITE ST SUITE 220 CENTENNIAL, CO 80112
Location Phone
(303) 721-9984
Location Fax
(303) 996-3278
Mailing Address
7030 S YOSEMITE ST STE 210 CENTENNIAL, CO 80112
Medical School Name
AT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduation Year
1982
Is Sole Proprietor?
No
Enumeration Date
05-12-2006
Last Update Date
10-20-2017
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A primary care provider (PCP) like Gregory Hollar sees people with common medical problems. The primary care provider might be a doctor, physician assistant, nurse practitioner or clinic that are usually involved in your long-term care. A PCP might provide preventive care, treat common medical conditions, identify urgent medical problems and refer you to specialists when necessary. Primary care is usually provided in an outpatient facility but if you are admitted to a hospital your PCP may assist in your care. The most common medical conditions seen by primary care providers are: hypertension, upper respiratory tract infections, depression or anxiety, back pain, arthritis, dermatitis, diabetes, urinary tract infections, etc

Location Map

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Family Medicine

Taxonomy Code
207Q00000X
Type
Allopathic & Osteopathic Physicians
License No.
25423
License State
CO
Taxonomy Description
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
D28372MEDICARE UPIN (02)CO 
C452638MEDICARE PIN (08)CO 

Medicare Participation & PECOS Enrollment Status

Gregory Hollar is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Gregory Hollar is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 9537102249

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20050603000507

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Administration of influenza virus vaccine

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

This service was performed 53 times for 52 patients

Administration of pneumococcal vaccine

The pneumococcal vaccine helps protect against pneumococcal bacteria, which can cause severe infections like pneumonia and meningitis. The vaccine is given as an injection, typically in the arm. It's recommended for infants, older adults, and those with certain health conditions.

This service was performed 12 times for 12 patients

Annual depression screening, 15 minutes

An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.

This service was performed 89 times for 89 patients

Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit

An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.

This service was performed 91 times for 91 patients

Dxa bone density measurement of hip, pelvis, spine

A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.

This service was performed 20 times for 20 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 26 times for 24 patients

Established patient office or other outpatient visit, 20-29 minutes

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

This service was performed 77 times for 58 patients

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 318 times for 131 patients

Influenza vaccine split virus, preservative free

The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.

This service was performed 53 times for 52 patients

Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use

The Pneumococcal Conjugate Vaccine (PCV20) is a shot given to protect against 20 types of bacteria that can cause serious infections like pneumonia and meningitis. It's administered through a muscle, usually in the arm. It's important for overall health.

This service was performed 11 times for 11 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

This service was performed 29 times for 26 patients

Urinalysis, manual test

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

This service was performed 24 times for 20 patients

X-ray of chest, 2 views

A chest X-ray, 2 views, is a quick, painless test that creates pictures of the structures inside your chest, such as your heart, lungs, and blood vessels. Two different angles are used to get a comprehensive view. This helps in diagnosing conditions like pneumonia, heart problems, or lung cancer.

This service was performed 16 times for 13 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $22.35 for a new patient copayment and $25.5 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 80112 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99203

  • Average New Patient Price $89.43
  • Minimum New Patient Price $58.06
  • Maximum New Patient Price $174.82
  • Average New Patient Copayment $22.35
  • Minimum New Patient Copayment $14.51
  • Maximum New Patient Copayment $43.7

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $102.03
  • Minimum Established Patient Price $18.88
  • Maximum Established Patient Price $142.79
  • Average Established Patient Copayment $25.5
  • Minimum Established Patient Copayment $4.72
  • Maximum Established Patient Copayment $35.69

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Overall MIPS Quality Performance

The provider participated in CMS Quality Payment Program under the Merit-based Incentive Payment System (MIPS) and has an overall final score of 94.99, based on four performance areas: quality, improvement activities, promoting interoperability, and cost. The purpose of this information is to help people with Medicare make informed decisions and incentivize doctors and clinicians to maximize performance.

The Merit-based Incentive Payment System (MIPS) is a way providers could use to participate in CMS Quality Payment Program (QPP). The MIPS program affects clinician reimbursement for Part B covered professional services and also rewards them for improving the quality of patient care and outcomes.

  • Final Score: 94.99 out of 100

    The MIPS program evaluates providers across multiple categories with a specific weight for each category resulting a in a MIPS final score that ranges from 0 to 100 points. The MIPS Final Score determines whether providers receive a negative, neutral or positive MIPS payment adjustment.

  • Quality Score: 100

    The Quality category assesses providers performance on clinical practices and patient outcomes under the traditional MIPS program. The quality measures help identify the quality of healthcare processes, outcomes, and patient experiences. The Quality measure category compromises 40% providers final MPIS scores.

    There are six collection types for MIPS quality measures: Electronic Clinical Quality Measures (eCQMs), MIPS Clinical Quality Measures (CQMs), Qualified Clinical Data Registry (QCDR) Measures, Medicare Part B claims measures, CMS Web Interface measures and The Consumer Assessment of Healthcare Providers and Systems (CAHPS) for MIPS Survey.

  • Promoting Interoperability Score: N/A

    The Interoperability category measures the providers ability to use technology to exchange and make use of healthcare information in a way that is less burdensome and improves outcomes. The Interoperability measure category compromises 25% providers final MPIS scores.

    The MIPS Interoperability measure focuses on the use of certified electronic health record technology (CEHRT) to improve patient access health information, the exchange of information between clinicians and pharmacies and the systematic collection, analysis, and interpretation of healthcare data.

  • Improvement Activities Score: 40

    The Improvement Activities performance category evaluates the providers participation in clinical activities that support the improvement of clinical practice, care delivery, and outcomes. Providers have the option to choose 2 to 4 activities from an inventory of over 100 improvement activities. Providers typically choose the activities that best fit their needs. The improvement activities measure category compromises 15% providers final MPIS scores.

    The Improvement measures aim to better patient engagement, patient safety and other areas of patient care. The Improvement Activities category compromises 15% of providers final MPIS scores.

  • Cost Score: 83.32

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

  • Cost Score: 83.32

    The Cost performance category asses the amount and types of services provided and how clinicians coordinate care and seek improvement of health outcomes by ensuring patients receive the appropriate services.

    Although providers don't determine the price of healthcare services they are important in delivering high-quality care at a reasonable cost. The Cost measures category compromises 20% of providers final MPIS scores.

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NPI Validation Check Digit Calculation


The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.

Start with the original NPI number, the last digit is the check digit and is not used in the calculation.
1063462653
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
20123864610
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 0 + 1 + 2 + 3 + 8 + 6 + 4 + 6 + 1 + 0 + 24 = 57
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
60 - 57 = 33

The NPI number 1063462653 is valid because the calculated check digit 3 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1346289675 MARY ANN RICHARDS P.A.-C
Individual
Physician Assistant7030 S YOSEMITE ST SUITE 210
CENTENNIAL, CO 80112
(303) 721-9984
1760417299MRS. KATHERINE MARY YOUNG PA-C, MS
Individual
Physician Assistant7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1609892678 RACHELLE R WEBSTER PA-C
Individual
Physician Assistant7030 S YOSEMITE ST SUITE 210
CENTENNIAL, CO 80112
(303) 721-9984
1992721781 CYNTHIA M CORTINI D.C.
Individual
Chiropractor7030 S YOSEMITE ST SUITE 220
CENTENNIAL, CO 80112
(303) 721-9984
1417973223 JULET HUTCHENS D.C.
Individual
Chiropractor7030 S YOSEMITE ST SUITE 210
CENTENNIAL, CO 80112
(303) 721-9984
1154340883 ANTHONY MCKEE D.C.
Individual
Chiropractor7030 S YOSEMITE ST SUITE 210
CENTENNIAL, CO 80112
(303) 721-9984
1154333821CLINIX HEALTH SERVICES
Organization
Chiropractor7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 996-3244
1528173556 ZACHARY CASHIN D.C.
Individual
Chiropractor7030 S YOSEMITE ST SUITE 210
CENTENNIAL, CO 80112
(303) 721-9984
1215028873MS. ANNE MARIE SCHULLER PA-C
Individual
Physician Assistant7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1144381369MR. TODD LEE ODEKIRK D.C.
Individual
Chiropractor7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1972624708DR. ANNA E. MCNAB DC
Individual
Chiropractor7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1194914168 RAPHAEL J DANGELO M.D.
Individual
Family Medicine7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1790919520DR. KATIE LYNN ANDERSON D.C.
Individual
Chiropractor7030 S YOSEMITE ST SUITE 220
CENTENNIAL, CO 80112
(303) 721-9984
1952666059 MICHAEL JAMES KOCH D.C.
Individual
Chiropractor7030 S YOSEMITE ST SUITE 220
CENTENNIAL, CO 80112
(303) 721-9984
1801082250DR. MIMI BRADLEY MCFAUL PSY.D.
Individual
Psychologist (Clinical)7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(720) 252-4750
1699928184 CELA F. KOBEL PA-C
Individual
Physician Assistant (Medical)7030 S YOSEMITE ST ATTN: CREDENTIALING DEPT
CENTENNIAL, CO 80112
(303) 721-9984
1093799215 SCOTT D KAISER MD
Individual
Family Medicine7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1740583012 KELSEY J NINOW P.A.
Individual
Physician Assistant7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1639239700MS. JANE MOORE LCSW
Individual
Social Worker (Clinical)7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984
1720566359 AMY BREEN PA-C
Individual
Physician Assistant7030 S YOSEMITE ST
CENTENNIAL, CO 80112
(303) 721-9984

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1063462653, enumerated in the NPI registry as an "individual" on May 12, 2006

The provider is located at 7030 S Yosemite St Suite 220 Centennial, Co 80112 and the phone number is (303) 721-9984

The provider's speciality is Family Medicine with taxonomy code 207Q00000X

The provider has more than 44 years of experience. He graduated from At Still University Of Health Sciences, College Of Osteo Med, Kirksville in 1982.

The provider might be accepting Accepts: Medicare and Medicaid. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.

Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

The provider has an overall high rating in the following quality measures: quality clinical practices and patient outcomes and experiences , coordinates care and seeks improvement of health outcomes.

Medicare beneficiaries should expect a typical cost of $89.43 with an average copayment of $22.35 for new patient appointments. Established patients should expect a typical charge of $102.03 and an average copayment of 25.5. Please review your insurance plan or contact the provider directly to determine your specific costs.

The most common procedures or services performed by this practitioner are: Administration of influenza virus vaccine, Administration of pneumococcal vaccine, Annual depression screening, 15 minutes, Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit, Dxa bone density measurement of hip, pelvis, spine, Established patient office or other outpatient visit, 10-19 minutes, Established patient office or other outpatient visit, 20-29 minutes, Established patient office or other outpatient visit, 30-39 minutes, Influenza vaccine split virus, preservative free, Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use, Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report, Urinalysis, manual test and X-ray of chest, 2 views.

This NPI record was last updated on May 12, 2006. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.