Chiamaka Onwuzulike, MD
Student in an Organized Health Care Education/Training Program · Vallejo, CA
Chiamaka Onwuzulike, MD is a student in an organized health care education/training program with a practice address in Vallejo, California, and NPI 1326625906, issued on Mar 28, 2021. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Chiamaka Onwuzulike
- Credential
- MD
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 975 Sereno Dr, Vallejo, CA 94589
- Phone
- (707) 651-4071
- Enumerated
- Mar 28, 2021
- Record last updated
- Dec 30, 2024
- Medicare enrollment
- Enrolled (PECOS I20231215002081); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 40,652 in California → Look up another NPI →
Also registered at 975 Sereno Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joel Aandahl, NPAdult Health Nurse Practitioner1891423653
- Noman Absar, MDCritical Care Medicine (Internal Medicine) Physician1205908951
- Anthony Acquaviva, MDUrology Physician1457439283
- Jhonnard James Acuna, CRNACertified Registered Nurse Anesthetist1205997327
- Omid AfshariPharmacist1184165391
- Eesha AftabStudent in an Organized Health Care Education/Training Program1770421687
Verify Chiamaka Onwuzulike in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average student in an organized health care education/training program in 2024
237 Medicare Part D claims for 104 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate16 claims
- Atorvastatin Calcium13 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
- Southern California Permanente Medical GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chiamaka Onwuzulike among 40,652 student in an organized health care education/training program records in California
Chiamaka Onwuzulike, MD is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 28% of them.
- NPI issued2021 · 28% of these records are older, 66% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileYes · 6% of these records are
- Graduated2021 · median 2017 among the 2,409 with a school on file
- Record last updated2024 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
95 student in an organized health care education/training program records list a practice address in Vallejo
They are 95 of the 2,836 NPPES records with a practice address in Vallejo, and 40,652 student in an organized health care education/training program records in California.
All 40,652 in California → Every provider in Vallejo → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Kelsey Goodwin, D.O.Vallejo, CA 945891649628512
- Evan HirschbeinVallejo, CA 945891003270646
- Joanna IngebritsenVallejo, CA 945891245764539
- An-An Jiang, DPMVallejo, CA 945891023462629
- Kelsey Krigstein, MDVallejo, CA 945891871940940
- Chloe Le Marchand, M.D.Vallejo, CA 945891194172247
- Megan Matsumoto, PH.D.Vallejo, CA 945891215481890
- Sean NisamVallejo, CA 945891003341777
Common questions
What is Chiamaka Onwuzulike, MD's NPI number?
Chiamaka Onwuzulike, MD's National Provider Identifier (NPI) is 1326625906, issued on Mar 28, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Chiamaka Onwuzulike, MD located?
The NPPES record lists a practice address at 975 Sereno Dr, Vallejo, CA, 94589. Phone: (707) 651-4071. Providers update this record themselves, so call before visiting.
How can I verify Chiamaka Onwuzulike, MD's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Chiamaka Onwuzulike, MD prescribe under Medicare Part D?
In 2024, Chiamaka Onwuzulike, MD had 237 Medicare Part D claims for 104 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.