Michael Nwosu, M.D.
Family Medicine Physician · Temecula, CA
Michael Nwosu, M.D. is a family medicine physician with a practice address in Temecula, California, and NPI 1659805158, issued on Apr 12, 2017. Check the license (California A166465, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Michael Nwosu
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A166465 CA
Self-reported in NPPES; status is on the state search - Practice location
- 41840 Enterprise Cir N, Temecula, CA 92590
- Phone
- (951) 225-6400
- Enumerated
- Apr 12, 2017
- Record last updated
- Jan 12, 2026
- Fax
- (360) 462-2751
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 41840 Enterprise Cir N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Shaniqua CartwrightClinical Social Worker1639726011
- Mary Celaya, DNP FNP PMHNPFamily Nurse Practitioner1710060231
- Sun-Ling Chen, M.D.Family Medicine Physician1528366432
- Vanessa Cobian, M.D.Family Medicine Physician1134513039
Verify Michael Nwosu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A166465Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
526 Medicare Part D claims for 113 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium36 claims
- Metformin Hcl24 claims
- Amlodipine Besylate22 claims
- Fluticasone Propionate21 claims
- Omeprazole21 claims
- Gabapentin18 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.
Industry payments in 2024: $59.81
3 payments; by number, the most common kind was food and beverage; the largest payer was Sanofi Pasteur Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Michael Nwosu among 17,133 family medicine physician records in California
Michael Nwosu, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2026 · 58% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
80 family medicine physician records list a practice address in Temecula
They are 80 of the 4,057 NPPES records with a practice address in Temecula, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Temecula → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Cristina Bailey, M.D.Temecula, CA 925901598715823
- David Bucher, MDTemecula, CA 925901790735033
- Walter Combs, MDTemecula, CA 925901104876598
- Mary Gentile, DOTemecula, CA 925901861480998
- Gerardo Hizon, MD, FAAFP, CAQSMTemecula, CA 925901205898558
- Claudia Hsieh, D.O.Temecula, CA 925901255515979
- Tae-Woong Im, MDTemecula, CA 925901912956855
- Samuel Ko, MDTemecula, CA 925901457301855
Common questions
What is Michael Nwosu, M.D.'s NPI number?
Michael Nwosu, M.D.'s National Provider Identifier (NPI) is 1659805158, issued on Apr 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Michael Nwosu, M.D. located?
The NPPES record lists a practice address at 41840 Enterprise Cir N, Temecula, CA, 92590. Phone: (951) 225-6400. Providers update this record themselves, so call before visiting.
How can I verify Michael Nwosu, M.D.'s license?
NPPES lists California license number A166465, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael Nwosu, M.D. prescribe under Medicare Part D?
In 2024, Michael Nwosu, M.D. had 526 Medicare Part D claims for 113 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.