Garrett Clark Martin, M.D.
Internal Medicine Physician · Detroit, MI
Garrett Clark Martin, M.D. is an internal medicine physician with a practice address in Detroit, Michigan, and NPI 1083648596, issued on Jul 10, 2006. Check the license on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Garrett Clark Martin
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- D67934 MD
Self-reported in NPPES; status is on the state search - Practice location
- 13901 E Jefferson Ave, Detroit, MI 48215
- Phone
- (313) 822-0900
- Enumerated
- Jul 10, 2006
- Record last updated
- Aug 12, 2025
- Fax
- (313) 822-0950
- Medicaid ID
- 4670740 MI
- Medicare enrollment
- Enrolled (PECOS I20081007000738); accepts Medicare assignment
- Medical or professional school
- Meharry Medical College School Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 13901 E Jefferson Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Grace Allen Gullett, RNRegistered Nurse1609123348
- Jeffrey Beach, RDNRegistered Dietitian1053949701
- Joyce Brown, RNRegistered Nurse1043563448
- Sarah Brown-Sapp, BSN, RNCommunity Health Registered Nurse1376977157
- Angelic Douglas, RNRegistered Nurse1780936153
- Meryl Hadley, RDRegistered Dietitian1952676546
Verify Garrett Clark Martin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)Check the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
303 Medicare Part D claims for 110 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 35 claims were for opioids.
Most prescribed
- Amlodipine Besylate19 claims
- Oxycodone Hcl19 claims
- Prednisone13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $407.02
10 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Galen Inpatient Physicians PCGermantown, MD
- Synergy Medical Group LLCTimonium, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Garrett Clark Martin among 5,735 internal medicine physician records in Michigan
Garrett Clark Martin, M.D. is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2001 · median 2006 among the 3,564 with a school on file
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
617 internal medicine physician records list a practice address in Detroit
They are 617 of the 19,832 NPPES records with a practice address in Detroit, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Detroit → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Anita Cain, MDDetroit, MI 482151467588483
- Judy Pham, MDDetroit, MI 482151801449616
- Anthony Clarke, M.D.Detroit, MI 482141811055858
- Lauren Hughes, MDDetroit, MI 482141063972552
- Frank Knechtl, DODetroit, MI 482141801885165
- Daniel Mizrahi, D.O.Detroit, MI 482141740499029
- Hassan Saghir, M.D.Detroit, MI 482141730390832
- Adeola Akeredolu, MDDetroit, MI 482131962414656
Common questions
What is Garrett Clark Martin, M.D.'s NPI number?
Garrett Clark Martin, M.D.'s National Provider Identifier (NPI) is 1083648596, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Garrett Clark Martin, M.D. located?
The NPPES record lists a practice address at 13901 E Jefferson Ave, Detroit, MI, 48215. Phone: (313) 822-0900. Providers update this record themselves, so call before visiting.
How can I verify Garrett Clark Martin, M.D.'s license?
Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Garrett Clark Martin, M.D. prescribe under Medicare Part D?
In 2024, Garrett Clark Martin, M.D. had 303 Medicare Part D claims for 110 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.