John Spencer, M.D.
Family Medicine Physician · Sahuarita, AZ
John Spencer, M.D. is a family medicine physician with a practice address in Sahuarita, Arizona, and NPI 1548369937, issued on Sep 21, 2006. Check the license (Arizona 46503, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Spencer
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 46503 AZ
MD00024816 TN
Self-reported in NPPES; status is on the state search - Practice location
- 15920 S Rancho Sahuarita Blvd Ste 120, Sahuarita, AZ 85629
- Phone
- (520) 575-1175
- Enumerated
- Sep 21, 2006
- Record last updated
- Jan 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161221001912); 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 15920 S Rancho Sahuarita Blvd Ste 120
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diane Trotter, FNPFamily Nurse Practitioner1508108671
Verify John Spencer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 46503Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average family medicine physician in 2024
2,213 Medicare Part D claims for 442 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 62 claims were for opioids.
Most prescribed
- Levothyroxine Sodium117 claims
- Atorvastatin Calcium106 claims
- Amlodipine Besylate87 claims
- Lisinopril78 claims
- Prednisone71 claims
- Gabapentin70 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
- Access Primary Care Physicians IncAvondale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Spencer among 3,119 family medicine physician records in Arizona
John Spencer, M.D. 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 fileYes · 57% of these records are
- Graduated1975 · median 2006 among the 1,775 with a school on file
- Record last updated2021 · 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).
2 family medicine physician records list a practice address in Sahuarita
They are 2 of the 141 NPPES records with a practice address in Sahuarita, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Sahuarita → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Aaron Wu, DOSahuarita, AZ 856291508430588
- Boru Nale, M.D.San Manuel, AZ 856311497949226
- Ezra Singer, M.D.Pearce, AZ 856251932159399
- Abigail Ahyong-Perry, MDSells, AZ 856341417534223
- Molly Anderson, MDPatagonia, AZ 856241639146145
- Christopher Marshall, M.D.Sells, AZ 856341043278724
- Karen Moriah, MDSells, AZ 856341063512358
- Joanne Cardinal, MDSierra Vista, AZ 856351760557961
Common questions
What is John Spencer, M.D.'s NPI number?
John Spencer, M.D.'s National Provider Identifier (NPI) is 1548369937, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Spencer, M.D. located?
The NPPES record lists a practice address at 15920 S Rancho Sahuarita Blvd Ste 120, Sahuarita, AZ, 85629. Phone: (520) 575-1175. Providers update this record themselves, so call before visiting.
How can I verify John Spencer, M.D.'s license?
NPPES lists Arizona license number 46503, 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 John Spencer, M.D. prescribe under Medicare Part D?
In 2024, John Spencer, M.D. had 2,213 Medicare Part D claims for 442 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.