Nwamaka Merah, MD
NPI 1255065124 · Internal Medicine Physician · Saginaw, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nwamaka Merah, MD is a Internal Medicine Physician provider in Saginaw, MI (NPI 1255065124).
Provider details
- NPI number
- 1255065124
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 4351049988 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 17 |
| Metformin Hcl | 17 |
| Losartan Potassium | 15 |
| Amlodipine Besylate | 14 |
| Apixabanbrand: Eliquis | 11 |
| Lisinopril | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 1015 S Washington Ave Fl 3Saginaw, MI 48601-2556Phone: (989) 746-7681
Registry dates
- Enumerated
- 2022-07-14
- Last updated
- 2025-09-19
- Certified
- 2025-09-19
Frequently asked questions
- What is Nwamaka Merah's NPI number?
- Nwamaka Merah's National Provider Identifier (NPI) is 1255065124, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nwamaka Merah's specialty?
- Nwamaka Merah is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nwamaka Merah located?
- Nwamaka Merah's practice location on file with NPPES is 800 S Washington Ave, Saginaw, MI 48601-2551.
- What is Nwamaka Merah's phone number?
- The practice phone number listed in the NPPES registry for Nwamaka Merah is (989) 839-1644.
- Does Nwamaka Merah accept Medicare?
- Nwamaka Merah is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nwamaka Merah's NPI active?
- Yes — Nwamaka Merah's NPI (1255065124) is active in the NPPES registry as of the last update on 2025-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.