MICHAEL CHRISTOPHER GREASER MD
NPI 1811156979
Orthopaedic Surgery - Foot and Ankle Surgery in Bellaire, TX
Quality Rating: 77 out of 100 score
NPI Status: Active since June 04, 2008
Contact Information
5420 WEST LOOP S STE 2400
BELLAIRE, TX
ZIP 77401
Phone: (134) 863-5507
- Individual
- Male
- Years of Experience 18
- Orthopaedic Surgery
- Foot and Ankle Surgery
- Accepts Insurance
- Accepts Medicare Approved Payment
- PECOS Enrolled
About MICHAEL GREASER
This page provides the complete NPI Profile along with additional information for Michael Greaser, a provider established in Bellaire, Texas with a medical specialization in Orthopaedic Surgery, focusing in foot and ankle surgery and more than 18 years of experience. He graduated from University Of Texas Medical School At Houston in 2008. The healthcare provider is registered in the NPI registry with number 1811156979 assigned on June 2008. The practitioner's primary taxonomy code is 207XX0004X with license number N9708 (TX). The provider is registered as an individual and his NPI record was last updated 3 years ago.
- NPI
- 1811156979
- Provider Name
- MICHAEL CHRISTOPHER GREASER MD
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401
- Location Phone
- (134) 863-5507
- Mailing Address
- 6400 FANNIN ST STE 1700 HOUSTON, TX 77030
- Mailing Phone
- (713) 486-3550
- Mailing Fax
- Medical School Name
- UNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON
- Graduation Year
- 2008
- Is Sole Proprietor?
- No
- Enumeration Date
- 06-04-2008
- Last Update Date
- 07-16-2022
- Code Navigator
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
Orthopaedic Surgery Foot and Ankle Surgery
- Taxonomy Code
- 207XX0004X
- Type
- Allopathic & Osteopathic Physicians
- License No.
- N9708
- License State
- TX
- Taxonomy Description
- Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, foot and ankle surgeons deal with adult reconstructive foot and ankle surgery, adult foot and ankle trauma, sports medicine foot and ankle, and children's foot and ankle reconstructive surgery.
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Gold 10 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + Adult Dental + Vision - HMO
- Gold 3 Advanced: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
- Gold 3 Advanced: Aetna network + $0 walk-in clinic + Adult Dental + Vision - HMO
- Gold 4 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
- Gold S: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
- Silver 10 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
- Silver 10 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + Adult Dental + Vision - HMO
- Silver 5 Advanced: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
- Silver S: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
- Silver S: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 + Adult Dental+Vision - HMO
- Blue Advantage Bronze HMO? 204 - HMO
- Blue Advantage Bronze HMO? 301 - HMO
- Blue Advantage Bronze HMO? Standard - HMO
- Blue Advantage Gold HMO? 206 - HMO
- Blue Advantage Gold HMO? 603 - HMO
- Blue Advantage Gold HMO? Standard - HMO
- Blue Advantage Plus Bronze? 303 - POS
- Blue Advantage Plus Bronze? 305 - POS
- Blue Advantage Plus Bronze? Standard - POS
- Blue Advantage Plus Gold? 203 - POS
- Community Premier Bronze 003 (No deductible for PCP, Free Preventive Care, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Bronze 018 (No deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Gold 005 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Gold 021 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Silver 012 (No deductible for PCP, Urgent Care & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Silver 020 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Select Bronze 016 (No deductible for PCP & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Select Gold 022 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Select Silver 019 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Ultra Select Bronze 016 (No deductible for PCP & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Gold 1 - HMO
- Gold 1 with Adult Vision Services - HMO
- Gold 12 - HMO
- Gold 8 - HMO
- Silver 1 - HMO
- Silver 1 with Adult Vision Services - HMO
- Silver 12 with First 4 Primary Care Visits Free - HMO
- Silver 8 - HMO
- Bronze Classic 4700 - EPO
- Bronze Classic Standard - EPO
- Bronze Elite + PCP Saver Plus - EPO
- Gold Classic - EPO
- Gold Classic Guided Care - HMO
- Gold Classic Standard - EPO
- Gold Classic Standard Guided Care - HMO
- Gold Elite - EPO
- Gold Simple Guided Care - HMO
- Silver Classic - EPO
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 |
---|---|---|---|
5922842 | MEDICAID (05) | NC | |
NC1792 | MEDICAID (05) | SC |
Medicare Participation & PECOS Enrollment Status
Michael Greaser 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.
Michael Greaser 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: 244479434
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: I20140723000454
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
Provider Referred Orders for Durable Medical Equipment, Devices & Supplies
The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.
Durable Medical Equipment
DME-Wheelchairs (DD000N)
Standard wheelchair (HCPCS:K0001)
2 DME suppliers used 26 Medicare Claims 26 Services Paid
DME-Wheelchairs (DD000N)
Lightweight wheelchair (HCPCS:K0003)
2 DME suppliers used 31 Medicare Claims 31 Services Paid
DME-Wheelchairs (DD021N)
Elevating leg rests, pair (for use with capped rental wheelchair base) (HCPCS:K0195)
2 DME suppliers used 43 Medicare Claims 43 Services Paid
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.
Established patient office or other outpatient visit, 20-29 minutes
Established patient office or other outpatient visit, 30-39 minutes
Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg
Lower limb (leg) arthroscopy (minimally invasive joint repair)
New patient office or other outpatient visit, 30-44 minutes
New patient office or other outpatient visit, 45-59 minutes
X-ray of ankle, minimum of 3 views
X-ray of foot, minimum of 3 views
X-ray of heel, minimum of 2 views
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 111 times for 78 patientsThis 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 70 times for 59 patientsThis injection contains two medications, betamethasone acetate and betamethasone sodium phosphate. It is used to reduce inflammation and pain. It's given by a healthcare professional, often directly into the area causing discomfort.
This service was performed 15 times for 12 patientsLower limb arthroscopy is a minimally invasive procedure that allows doctors to examine and repair issues in your leg joints. It involves making small incisions through which a tiny camera and instruments are inserted. This technique can help diagnose and treat various joint problems with less pain and quicker recovery time.
This service was performed for 1-10 patientsThis service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
This service was performed 51 times for 51 patientsThis is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
This service was performed 33 times for 33 patientsAn ankle X-ray is a quick, painless imaging test. It involves capturing at least three different images or 'views' of your ankle using small amounts of radiation. These images help identify any abnormalities or injuries, such as fractures or arthritis.
This service was performed 84 times for 58 patientsAn X-ray of the foot, minimum of 3 views, is a non-invasive imaging test. It uses a small amount of radiation to produce images of the bones and tissues in your foot. This helps to identify fractures, infections, or other abnormalities. Multiple views ensure a comprehensive examination.
This service was performed 165 times for 97 patientsAn X-ray of the heel, minimum of 2 views, is a diagnostic procedure where safe radiation beams capture images of your heel from at least two different angles. This helps in identifying issues such as fractures, bone spurs, or arthritis. You'll remain still while the images are taken.
This service was performed 15 times for 13 patientsOverall 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 77, 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.
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Final Score: 77 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.
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Quality Score: 66.52
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.
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Promoting Interoperability Score: 100
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: 51.46
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: 51.46
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.
Find Provider Hospital Affiliations - Privileges
Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.
Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Michael Greaser is affiliated with the following medical facilities:
Hospital Name | Address | Phone | Hospital Type | Overall Rating |
---|---|---|---|---|
MEMORIAL HERMANN - TEXAS MEDICAL CENTER | 6411 FANNIN HOUSTON, TX 77030 | (713) 704-3700 | Acute Care Hospitals | |
MEMORIAL HERMANN HOSPITAL SYSTEM | 1635 NORTH LOOP WEST HOUSTON, TX 77008 | (713) 448-6796 | Acute Care Hospitals | |
MEMORIAL HERMANN SUGAR LAND HOSPITAL | 17500 W GRAND PARKWAY SOUTH SUGAR LAND, TX 77479 | (281) 725-5000 | Acute Care Hospitals |
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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. | |||||||||
1 | 8 | 1 | 1 | 1 | 5 | 6 | 9 | 7 | 9 |
Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
2 | 8 | 2 | 1 | 2 | 5 | 12 | 9 | 14 | |
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
2 + 8 + 2 + 1 + 2 + 5 + 1 + 2 + 9 + 1 + 4 + 24 = 61 | |||||||||
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
70 - 61 = 9 | 9 |
The NPI number 1811156979 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 12 providers are registered at the same or nearby location.
NPI | Name / Type | Taxonomy | Address |
---|---|---|---|
1750384749 | DR. DEAN W SMITH MD Individual | Orthopaedic Surgery (Hand Surgery) | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-3550 |
1528333770 | DAVID BOOTY DOHERTY JR. Individual | Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery) | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-3550 |
1164818647 | NIDA ALI PA-C Individual | Physician Assistant | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-7528 |
1023194883 | ERNEST U CONRAD III MD Individual | Orthopaedic Surgery | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-3550 |
1467182899 | AZALEA MARIE ROSALES PA-C Individual | Physician Assistant | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-3550 |
1760798102 | DR. DAVID RODRIGUEZ QUINTANA M.D. Individual | Orthopaedic Surgery (Adult Reconstructive Orthopaedic Surgery) | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-3902 |
1932609799 | CLAIRE NICOLE NESMITH FNP-C Individual | Nurse Practitioner (Family) | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-1624 |
1194832709 | WILLIAM HICKS HADNOTT III MD Individual | Orthopaedic Surgery | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-3550 |
1497101471 | ROD JAY TURNER JR. MD Individual | Family Medicine (Sports Medicine) | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-3550 |
1649721424 | MEGAN ELISE WILLIAMS PA-C Individual | Physician Assistant | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (281) 728-1131 |
1952854002 | ERICA M GILES MD Individual | Orthopaedic Surgery | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (713) 486-7550 |
1508167776 | DENISE PEREZ ACNP-BC Individual | Nurse Practitioner (Acute Care) | 5420 WEST LOOP S STE 2400 BELLAIRE, TX 77401 (832) 567-1187 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1811156979, enumerated in the NPI registry as an "individual" on June 04, 2008
The provider is located at 5420 West Loop S Ste 2400 Bellaire, Tx 77401 and the phone number is (134) 863-5507
The provider's speciality is Orthopaedic Surgery with taxonomy code 207XX0004X with a focus in Foot and Ankle Surgery
The provider has more than 18 years of experience. He graduated from University Of Texas Medical School At Houston in 2008.
The provider might be accepting Accepts: Aetna CVS Health, Blue Cross and Blue Shield of. 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: uses technology to exchange and make use of healthcare information.
The most common procedures or services performed by this practitioner are: Established patient office or other outpatient visit, 20-29 minutes, Established patient office or other outpatient visit, 30-39 minutes, Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg, Lower limb (leg) arthroscopy (minimally invasive joint repair), New patient office or other outpatient visit, 30-44 minutes, New patient office or other outpatient visit, 45-59 minutes, X-ray of ankle, minimum of 3 views, X-ray of foot, minimum of 3 views and X-ray of heel, minimum of 2 views.
The practitioner is affiliated to the following hospital(s): MEMORIAL HERMANN - TEXAS MEDICAL CENTER, MEMORIAL HERMANN HOSPITAL SYSTEM and MEMORIAL HERMANN SUGAR LAND HOSPITAL. Hospital affiliations are identified through self-reporting data and service claims based on the place of service.
This NPI record was last updated on June 04, 2008. 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].
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