James P. Kerwin, MD
Family Medicine Physician · Tucson, AZ
James P. Kerwin, MD is a family medicine physician with a practice address in Tucson, Arizona, and NPI 1942309232, issued on Sep 22, 2006. Check the license (Arizona 20612, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- James P. Kerwin
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20612 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 707 N Alvernon Way Ste 101, Tucson, AZ 85711
- Phone
- (520) 694-8888
- Enumerated
- Sep 22, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (520) 694-1640
- Medicaid ID
- 131988 AZ
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 707 N Alvernon Way Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James P. Kerwin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 20612Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average family medicine physician in 2024
1,568 Medicare Part D claims for 450 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium105 claims
- Levothyroxine Sodium75 claims
- Amlodipine Besylate66 claims
- Lisinopril66 claims
- Losartan Potassium64 claims
- Pantoprazole Sodium56 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.
James P. Kerwin among 3,119 family medicine physician records in Arizona
James P. Kerwin, MD 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 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2007 · 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).
554 family medicine physician records list a practice address in Tucson
They are 554 of the 18,788 NPPES records with a practice address in Tucson, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Tucson → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Eamon Armstrong, M.D.Tucson, AZ 857111629036934
- Mary Blatt, M.D.Tucson, AZ 857111902883127
- Colleen Cagno, MDTucson, AZ 857111245202720
- Brian Donovan, M.D.Tucson, AZ 857111780686949
- Rinly Gecosala, M.D., M.P.H.Tucson, AZ 857111033177043
- Linda Granath, M.D.Tucson, AZ 857111447235841
- Ramesh Karra, MDTucson, AZ 857111891759452
- Randa Kutob, MDTucson, AZ 857111326145889
Common questions
What is James P. Kerwin, MD's NPI number?
James P. Kerwin, MD's National Provider Identifier (NPI) is 1942309232, issued on Sep 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James P. Kerwin, MD located?
The NPPES record lists a practice address at 707 N Alvernon Way Ste 101, Tucson, AZ, 85711. Phone: (520) 694-8888. Providers update this record themselves, so call before visiting.
How can I verify James P. Kerwin, MD's license?
NPPES lists Arizona license number 20612, as entered by the provider. 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 James P. Kerwin, MD prescribe under Medicare Part D?
In 2024, James P. Kerwin, MD had 1,568 Medicare Part D claims for 450 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.