Erica Ogechi Onwuegbuchu, MD
Internal Medicine Physician · San Antonio, TX
Erica Ogechi Onwuegbuchu, MD is an internal medicine physician with a practice address in San Antonio, Texas, and NPI 1538516935, issued on May 16, 2016. Check the license (Texas W4917, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Erica Ogechi Onwuegbuchu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- W4917 TX
Self-reported in NPPES; status is on the state search - Practice location
- 5210 Thousand Oaks Dr Ste 1203, San Antonio, TX 78233
- Phone
- (210) 233-7000
- Enumerated
- May 16, 2016
- Record last updated
- May 28, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 5210 Thousand Oaks Dr Ste 1203
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claire Bustamante, PNPPediatric Nurse Practitioner1326535436
- Amanda Inglish, APRN, FNP-CFamily Nurse Practitioner1386101277
- Adrienne Lopez, NPFamily Nurse Practitioner1033677414
- Christina Matheny, APRNNurse Practitioner1497209894
- Katherine Villarreal, CPNPPediatric Nurse Practitioner1770198616
Verify Erica Ogechi Onwuegbuchu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license W4917Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
236 Medicare Part D claims for 59 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium28 claims
- Gabapentin11 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.
Erica Ogechi Onwuegbuchu among 9,175 internal medicine physician records in Texas
Erica Ogechi Onwuegbuchu, MD is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 74% of them.
- NPI issued2016 · 74% of these records are older, 23% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2026 · 49% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
657 internal medicine physician records list a practice address in San Antonio
They are 657 of the 37,749 NPPES records with a practice address in San Antonio, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in San Antonio → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Barbara Forseth, MDLive Oak, TX 782331114077161
- Nazish Ismail, M.D.Live Oak, TX 782331619105962
- Nadine Liu, D.O.Live Oak, TX 782331033165634
- Harmeet Mangat, M.D.Live Oak, TX 782331992856272
- Huyen Nguyen, M.D.Live Oak, TX 782331629167929
Common questions
What is Erica Ogechi Onwuegbuchu, MD's NPI number?
Erica Ogechi Onwuegbuchu, MD's National Provider Identifier (NPI) is 1538516935, issued on May 16, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Erica Ogechi Onwuegbuchu, MD located?
The NPPES record lists a practice address at 5210 Thousand Oaks Dr Ste 1203, San Antonio, TX, 78233. Phone: (210) 233-7000. Providers update this record themselves, so call before visiting.
How can I verify Erica Ogechi Onwuegbuchu, MD's license?
NPPES lists Texas license number W4917, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Erica Ogechi Onwuegbuchu, MD prescribe under Medicare Part D?
In 2024, Erica Ogechi Onwuegbuchu, MD had 236 Medicare Part D claims for 59 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.