Alaba Onasanya, M.D
NPI 1891896031 · Internal Medicine Physician · Rock Hill, SC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alaba Onasanya, M.D is a Internal Medicine Physician provider in Rock Hill, SC (NPI 1891896031).
Provider details
- NPI number
- 1891896031
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 23264 (SC)
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Amlodipine Besylate | 17 |
| Omeprazole | 17 |
| Atorvastatin Calcium | 13 |
| Furosemide | 13 |
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 (2)
- 2670 Mills Park DrRock Hill, SC 29732-8599Phone: (803) 366-4848
- 205 Piedmont BlvdRock Hill, SC 29732-1836Phone: (803) 366-4848Fax: (803) 325-9500
Registry dates
- Enumerated
- 2006-09-26
- Last updated
- 2025-08-28
- Certified
- 2025-08-28
Frequently asked questions
- What is Alaba Onasanya's NPI number?
- Alaba Onasanya's National Provider Identifier (NPI) is 1891896031, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alaba Onasanya's specialty?
- Alaba Onasanya is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Alaba Onasanya located?
- Alaba Onasanya's practice location on file with NPPES is 1735 Heckle Blvd Unit M-S130, Rock Hill, SC 29732-4803.
- What is Alaba Onasanya's phone number?
- The practice phone number listed in the NPPES registry for Alaba Onasanya is (803) 659-3444.
- Does Alaba Onasanya accept Medicare?
- Alaba Onasanya is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alaba Onasanya's NPI active?
- Yes — Alaba Onasanya's NPI (1891896031) is active in the NPPES registry as of the last update on 2025-08-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.