Erica Onwuegbuchu, MD
NPI 1538516935 · Internal Medicine Physician · San Antonio, TX
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Erica Onwuegbuchu, MD is a Internal Medicine Physician provider in San Antonio, TX (NPI 1538516935).
Provider details
- NPI number
- 1538516935
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- W4917 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
- Other Technician247200000X
Technologists, Technicians & Other Technical Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 28 |
| Gabapentin | 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 (2)
- 3400 Spruce StPhiladelphia, PA 19104-4238Phone: (215) 316-5151
- 9537 Wickersham Rd Apt 1067Dallas, TX 75238-3104Phone: (469) 267-0268
Registry dates
- Enumerated
- 2016-05-16
- Last updated
- 2026-05-28
- Certified
- 2026-05-28
Frequently asked questions
- What is Erica Onwuegbuchu's NPI number?
- Erica Onwuegbuchu's National Provider Identifier (NPI) is 1538516935, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erica Onwuegbuchu's specialty?
- Erica Onwuegbuchu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Erica Onwuegbuchu located?
- Erica Onwuegbuchu's practice location on file with NPPES is 5210 Thousand Oaks Dr Ste 1203, San Antonio, TX 78233-6978.
- What is Erica Onwuegbuchu's phone number?
- The practice phone number listed in the NPPES registry for Erica Onwuegbuchu is (210) 233-7000.
- Does Erica Onwuegbuchu accept Medicare?
- Erica Onwuegbuchu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Erica Onwuegbuchu's NPI active?
- Yes — Erica Onwuegbuchu's NPI (1538516935) is active in the NPPES registry as of the last update on 2026-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.