Nwamaka Merah, MD
Internal Medicine Physician · Saginaw, MI
Nwamaka Merah, MD is an internal medicine physician with a practice address in Saginaw, Michigan, and NPI 1255065124, issued on Jul 14, 2022. Check the license (Michigan 4351049988, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Nwamaka Merah
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4351049988 MI
Self-reported in NPPES; status is on the state search - Practice location
- 800 S Washington Ave, Saginaw, MI 48601
- Phone
- (989) 839-1644
- Enumerated
- Jul 14, 2022
- Record last updated
- Sep 19, 2025
- Fax
- (989) 839-3029
- Medicare enrollment
- Enrolled (PECOS I20250721002200); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 800 S Washington Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mohamed Ayman, MDPulmonary Disease Physician1679131957
Verify Nwamaka Merah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4351049988Check 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
329 Medicare Part D claims for 115 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium17 claims
- Metformin Hcl17 claims
- Losartan Potassium15 claims
- Amlodipine Besylate14 claims
- Eliquis11 claims
- Lisinopril11 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.
Bills Medicare through one group practice
- Mymichigan Medical GroupSaginaw, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nwamaka Merah among 5,735 internal medicine physician records in Michigan
Nwamaka Merah, MD 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 2022, is newer than 87% of them.
- NPI issued2022 · 87% of these records are older, 10% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2022 · 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).
169 internal medicine physician records list a practice address in Saginaw
They are 169 of the 6,008 NPPES records with a practice address in Saginaw, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Saginaw → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Samer Abboud, MDSaginaw, MI 486011245804178
- Wasef Al-Khateeb, MDSaginaw, MI 486011740912138
- Reina Badran, MDSaginaw, MI 486011730609256
- Waseem Diab, MDSaginaw, MI 486011730753328
- Lakshmi Gowda Hanumaiah, MDSaginaw, MI 486011770714370
- Ayesha Khan, M.D.Saginaw, MI 486011275583882
- Sadia Khan, MDSaginaw, MI 486011881633048
- Muhammad Khan, M.D.Saginaw, MI 486011689771099
Common questions
What is Nwamaka Merah, MD's NPI number?
Nwamaka Merah, MD's National Provider Identifier (NPI) is 1255065124, issued on Jul 14, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Nwamaka Merah, MD located?
The NPPES record lists a practice address at 800 S Washington Ave, Saginaw, MI, 48601. Phone: (989) 839-1644. Providers update this record themselves, so call before visiting.
How can I verify Nwamaka Merah, MD's license?
NPPES lists Michigan license number 4351049988, as entered by the provider. 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 Nwamaka Merah, MD prescribe under Medicare Part D?
In 2024, Nwamaka Merah, MD had 329 Medicare Part D claims for 115 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.