RYAN CONSTANCIO ALONZO
NPI 1184253445
Internal Medicine in Denver, CO

NPI Status: Active since April 07, 2020

Contact Information

777 BANNOCK ST
DENVER, CO
ZIP 80204
Phone: (303) 436-4949
Fax: (303) 602-8176

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  • Individual
  • Male
  • Years of Experience 3
  • Internal Medicine
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About RYAN ALONZO

This page provides the complete NPI Profile along with additional information for Ryan Alonzo, an internist established in Denver, Colorado with a medical specialization in Internal Medicine and more than 3 years of experience. He graduated from University Of Colorado School Of Medicine, Denver in 2023. The healthcare provider is registered in the NPI registry with number 1184253445 assigned on April 2020. The practitioner's primary taxonomy code is 207R00000X with license number DR.0070181 (CO). The provider is registered as an individual and his NPI record was last updated March 2025.

NPI
1184253445
Provider Name
RYAN CONSTANCIO ALONZO
Gender
Male
Entity Type
Individual
Location Address
777 BANNOCK ST DENVER, CO 80204
Location Phone
(303) 436-4949
Location Fax
(303) 602-8176
Mailing Address
777 BANNOCK ST DENVER, CO 80204
Mailing Phone
(303) 436-4949
Mailing Fax
(303) 602-8176
Medical School Name
UNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduation Year
2023
Is Sole Proprietor?
No
Enumeration Date
04-07-2020
Last Update Date
03-31-2025
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An internist like Ryan Alonzo is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Secondary Locations

  • 13001 East 17th Place
    Aurora, CO 80045
    (303) 724-1784

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

Internal Medicine

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
DR.0070181
License State
CO
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Medicare Participation & PECOS Enrollment Status

Ryan Alonzo 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.

Ryan Alonzo 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: 5698199370

    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: I20230824000146

    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

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $33.13 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 80204 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $132.55
  • Minimum New Patient Price $58.06
  • Maximum New Patient Price $174.82
  • Average New Patient Copayment $33.13
  • 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.

Reviews for RYAN CONSTANCIO ALONZO

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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.
1184253445
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
2116445648
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 1 + 1 + 6 + 4 + 4 + 5 + 6 + 4 + 8 + 24 = 65
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit.
70 - 65 = 55

The NPI number 1184253445 is valid because the calculated check digit 5 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
1962408260DR. WALTER L. BIFFL MD
Individual
Surgery777 BANNOCK ST MC 0206
DENVER, CO 80204
(303) 436-5842
1639179989DR. ERIC PETERSON MD
Individual
Family Medicine777 BANNOCK ST VC 1914
DENVER, CO 80204
(303) 436-6000
1528069457 MARGARET TOMCHO MD
Individual
Pediatrics777 BANNOCK ST MC 3000
DENVER, CO 80204
(303) 436-4320
1821088071DR. JOHN C HOLLAND M.D.
Individual
Psychiatry & Neurology (Psychiatry)777 BANNOCK ST
DENVER, CO 80204
(720) 236-2390
1508847153 NORMA J STIGLICH M.D.
Individual
Obstetrics & Gynecology777 BANNOCK ST MC 3240
DENVER, CO 80204
(303) 436-6000
1831170182DR. CHARLES A SHUMAN MD
Individual
Psychiatry & Neurology (Psychiatry)777 BANNOCK ST UNIT 9
DENVER, CO 80204
(303) 436-7777
1336121391 SHEILA ANNE LORENTZEN C.N.M.
Individual
Advanced Practice Midwife777 BANNOCK ST
DENVER, CO 80204
(970) 231-4012
1003881046 PAULINE FRANCES CONNOR CNM, NP
Individual
Nurse Practitioner (Obstetrics & Gynecology)777 BANNOCK ST MC 1914
DENVER, CO 80204
(303) 436-6000
1508817859DR. PHILIP SYDNEY MEHLER MD
Individual
Internal Medicine777 BANNOCK ST MC 0278
DENVER, CO 80204
(303) 436-3234
1578517082 RICHARD L BYYNY MD
Individual
Emergency Medicine777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000
1164476677 STEPHEN M HESSL MD
Individual
Preventive Medicine (Occupational Medicine)777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000
1679512032 PHILIP F STAHEL MD
Individual
Orthopaedic Surgery (Orthopaedic Trauma)777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000
1497783914 DAVID S BRODY MD
Individual
Internal Medicine777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000
1063441582 KATHRYN M BEAUCHAMP MD
Individual
Neurological Surgery777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 426-6000
1831122415 BARBARA QUIST
Individual
Nurse Anesthetist, Certified Registered777 BANNOCK ST MAIL CODE
DENVER, CO 80204
(303) 570-4595
1326063421 FRED SINGER
Individual
Nurse Anesthetist, Certified Registered777 BANNOCK ST
DENVER, CO 80204
(303) 436-6550
1194750752 SUZANNE Z BARKIN MD
Individual
Radiology (Diagnostic Radiology)777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000
1629003298 MONA B KRULL MD
Individual
Obstetrics & Gynecology777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000
1376578849 MERRIBETH BRUNTZ DPM
Individual
Podiatrist777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000
1548295017 MAGDALENA M AGUAYO PA
Individual
Physician Assistant777 BANNOCK ST MC 7782
DENVER, CO 80204
(303) 436-6000

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1184253445, enumerated in the NPI registry as an "individual" on April 07, 2020

The provider is located at 777 Bannock St Denver, Co 80204 and the phone number is (303) 436-4949

The provider's speciality is Internal Medicine with taxonomy code 207R00000X

The provider has more than 3 years of experience. He graduated from University Of Colorado School Of Medicine, Denver in 2023.

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.

Medicare beneficiaries should expect a typical cost of $132.55 with an average copayment of $33.13 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.

This NPI record was last updated on April 07, 2020. 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.