Nina Semnani Willis, D.O.
Family Medicine Physician · Phoenix, AZ
Nina Semnani Willis, D.O. is a family medicine physician with a practice address in Phoenix, Arizona, and NPI 1861870842, issued on May 11, 2015. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Nina Semnani Willis
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A16140 CA
Self-reported in NPPES; status is on the state search - Practice location
- 350 W Thomas RD, Phoenix, AZ 85013
- Phone
- (602) 406-3153
- Enumerated
- May 11, 2015
- Record last updated
- May 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20190311001872); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 350 W Thomas RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nina Semnani Willis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
27% fewer Medicare Part D claims than the average family medicine physician in 2024
2,586 Medicare Part D claims for 568 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 83 claims were for opioids.
Most prescribed
- Atorvastatin Calcium193 claims
- Rosuvastatin Calcium134 claims
- Lisinopril122 claims
- Levothyroxine Sodium115 claims
- Losartan Potassium111 claims
- Amlodipine Besylate103 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 GroupWoodland Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nina Semnani Willis among 3,119 family medicine physician records in Arizona
Nina Semnani Willis, D.O. is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 73% of them.
- NPI issued2015 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2015 · median 2006 among the 1,775 with a school on file
- Record last updated2024 · 54% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
649 family medicine physician records list a practice address in Phoenix
They are 649 of the 31,399 NPPES records with a practice address in Phoenix, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Phoenix → Family Medicine Physician nationwide →
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- Douglas Jones, M.D.Phoenix, AZ 850131952410904
- Carlos Lopez, M.D.Phoenix, AZ 850131952309320
- Roberta Matern, MDPhoenix, AZ 850131215984349
Common questions
What is Nina Semnani Willis, D.O.'s NPI number?
Nina Semnani Willis, D.O.'s National Provider Identifier (NPI) is 1861870842, issued on May 11, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Nina Semnani Willis, D.O. located?
The NPPES record lists a practice address at 350 W Thomas RD, Phoenix, AZ, 85013. Phone: (602) 406-3153. Providers update this record themselves, so call before visiting.
How can I verify Nina Semnani Willis, D.O.'s license?
Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nina Semnani Willis, D.O. prescribe under Medicare Part D?
In 2024, Nina Semnani Willis, D.O. had 2,586 Medicare Part D claims for 568 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.