Chimere Willis Nnaji, MD
Family Medicine Physician · Houston, TX
Chimere Willis Nnaji, MD is a family medicine physician with a practice address in Houston, Texas, and NPI 1013657741, issued on Mar 30, 2022. Check the license (Texas W0686, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Chimere Willis Nnaji
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- W0686 TX
Self-reported in NPPES; status is on the state search - Practice location
- 14201 E Sam Houston Pkwy N Ste 500, Houston, TX 77044
- Phone
- (281) 436-8888
- Enumerated
- Mar 30, 2022
- Record last updated
- Sep 2, 2025
- Fax
- (281) 436-8889
- Medicare enrollment
- Enrolled (PECOS I20250916004493); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 14201 E Sam Houston Pkwy N Ste 500
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dalton Carter, MDFamily Medicine Physician1124656715
Verify Chimere Willis Nnaji in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license W0686Check 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 family medicine physician in 2024
340 Medicare Part D claims for 71 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 26 claims were for opioids.
Most prescribed
- Atorvastatin Calcium39 claims
- Lisinopril19 claims
- Tramadol Hcl16 claims
- Albuterol Sulfate Hfa14 claims
- Xigduo Xr14 claims
- Amlodipine Besylate13 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
- Memorial Hermann Medical GroupHouston, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chimere Willis Nnaji among 11,119 family medicine physician records in Texas
Chimere Willis Nnaji, MD is one of 11,119 family 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 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2016 · median 2004 among the 7,095 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,123 family medicine physician records list a practice address in Houston
They are 1,123 of the 61,221 NPPES records with a practice address in Houston, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Houston → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Justin Bogwu, M.D.Houston, TX 770441245550656
- Dalton Carter, MDHouston, TX 770441124656715
- Cesario Castillo, M.D.Houston, TX 770441447357439
- Gregg Castillo, M.D.Houston, TX 770441508928185
- Brian Castillo, M.D.Houston, TX 770441922247881
- Claire Kim, D.O.Houston, TX 770441992048979
- Derek Timbs, RN MSN FNPHouston, TX 770441609886910
- Zeba Barlas, M.D.Houston, TX 770451285642546
Common questions
What is Chimere Willis Nnaji, MD's NPI number?
Chimere Willis Nnaji, MD's National Provider Identifier (NPI) is 1013657741, issued on Mar 30, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Chimere Willis Nnaji, MD located?
The NPPES record lists a practice address at 14201 E Sam Houston Pkwy N Ste 500, Houston, TX, 77044. Phone: (281) 436-8888. Providers update this record themselves, so call before visiting.
How can I verify Chimere Willis Nnaji, MD's license?
NPPES lists Texas license number W0686, 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 Chimere Willis Nnaji, MD prescribe under Medicare Part D?
In 2024, Chimere Willis Nnaji, MD had 340 Medicare Part D claims for 71 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.