COLIN JANTZ MCMAHON MD
NPI 1225618150
Emergency Medicine in Grand Rapids, MI

NPI Status: Active since April 13, 2021

Contact Information

25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI
ZIP 49503
Phone: (616) 391-3777
Fax: (616) 391-3755

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  • Individual
  • Male
  • Years of Experience 5
  • Emergency Medicine
  • May Accept Medicare Approved Payment
  • PECOS Enrolled

About COLIN MCMAHON

This page provides the complete NPI Profile along with additional information for Colin Mcmahon, a provider established in Grand Rapids, Michigan with a medical specialization in Emergency Medicine and more than 5 years of experience. He graduated from University Of Michigan Medical School in 2021. The healthcare provider is registered in the NPI registry with number 1225618150 assigned on April 2021. The practitioner's primary taxonomy code is 207P00000X with license number 4301513931 (MI). The provider is registered as an individual and his NPI record was last updated September 2025.

NPI
1225618150
Provider Name
COLIN JANTZ MCMAHON MD
Gender
Male
Entity Type
Individual
Location Address
25 MICHIGAN ST NE STE 2100 GRAND RAPIDS, MI 49503
Location Phone
(616) 391-3777
Location Fax
(616) 391-3755
Mailing Address
25 MICHIGAN ST NE STE 2100 GRAND RAPIDS, MI 49503
Mailing Phone
(616) 391-3777
Mailing Fax
(616) 391-3755
Medical School Name
UNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduation Year
2021
Is Sole Proprietor?
No
Enumeration Date
04-13-2021
Last Update Date
09-05-2025
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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

Emergency Medicine

Taxonomy Code
207P00000X
Type
Allopathic & Osteopathic Physicians
License No.
4301513931
License State
MI
Taxonomy Description
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

 

Medicare Participation & PECOS Enrollment Status

Colin Mcmahon is registered with Medicare but maybe doesn't accept claims assignment. If you are a Medicare beneficiary call and confirm with the provider before seeking any services.

Colin Mcmahon 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: 3678974623

    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: I20250707000426

    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? Maybe

    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 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 49503 ZIP code area.

New Patients Visit Costs *

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

  • Average New Patient Price $84.74
  • Minimum New Patient Price $54.34
  • Maximum New Patient Price $166.68
  • Average New Patient Copayment $21.18
  • Minimum New Patient Copayment $13.58
  • Maximum New Patient Copayment $41.67

Established Patients Visit Costs *

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

  • Average Established Patient Price $96.44
  • Minimum Established Patient Price $17.09
  • Maximum Established Patient Price $135.4
  • Average Established Patient Copayment $24.11
  • Minimum Established Patient Copayment $4.27
  • Maximum Established Patient Copayment $33.85

* 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.

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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.
1225618150
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
224512116110
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 2 + 4 + 5 + 1 + 2 + 1 + 1 + 6 + 1 + 1 + 0 + 24 = 50
Step 3: because the number obtained in step 2 ends in zero, the check digit is zero.
0

The NPI number 1225618150 is valid because the calculated check digit 0 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
1023499977 CALEB THIEL M.D.
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1265927560DR. ASHLEY ANN PARENT MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(906) 250-5953
1043705114 SALAR ALAM MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1578125548 JOSHUA OCHIENG OWUOR MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1003462508 SHELBY ELEANOR KELSH PHARMD
Individual
Pharmacist (Ambulatory Care)25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1457934275 CONNOR MCCALMON
Individual
Student in an Organized Health Care Education/Training Program25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1962082305DR. SUBHAN ASHFAQ TOOR MD
Individual
Student in an Organized Health Care Education/Training Program25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1851972707 NEELAY DIVYESH PUROHIT MD
Individual
Student in an Organized Health Care Education/Training Program25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1548822521 REBECCA ANN VEELE MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1730609223 ANGELA PERAINO-SISSON DO
Individual
Internal Medicine (Pulmonary Disease)25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-7777
1093377012 JACOB JOHN BAKER MD, PHD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1093456196 ANTONIA BIH FOMUNYAM NYONGABSEN
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1386263143 JOHN MICHAEL PARENT MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1689236655 MERCY NATASHA-NAISENYA DIXON MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 371-3777
1932781226DR. SHEETAL REVAN MARAGIRI MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1558713677 MARY CEARLEY M.D.
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1487149787 AARON PETER SALEM MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1568844017 QUOC-THIEU TRAN M.D.
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1689379521DR. DONOVAN JAMES WILCOX MD
Individual
Physical Medicine & Rehabilitation25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777
1487215505 BRIEANNE SUE WILSON MD
Individual
Internal Medicine25 MICHIGAN ST NE STE 2100
GRAND RAPIDS, MI 49503
(616) 391-3777

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1225618150, enumerated in the NPI registry as an "individual" on April 13, 2021

The provider is located at 25 Michigan St Ne Ste 2100 Grand Rapids, Mi 49503 and the phone number is (616) 391-3777

The provider's speciality is Emergency Medicine with taxonomy code 207P00000X

The provider has more than 5 years of experience. He graduated from University Of Michigan Medical School in 2021.

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 $84.74 with an average copayment of $21.18 for new patient appointments. Established patients should expect a typical charge of $96.44 and an average copayment of 24.11. Please review your insurance plan or contact the provider directly to determine your specific costs.

This NPI record was last updated on April 13, 2021. 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.