Gary Smithson, DO
Family Medicine Physician · San Tan Valley, AZ
Gary Smithson, DO is a family medicine physician with a practice address in San Tan Valley, Arizona, and NPI 1891483731, issued on Apr 27, 2023. Check the license (Arizona 011342, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gary Smithson
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 011342 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 36543 N Gantzel RD Ste 102, San Tan Valley, AZ 85140
- Phone
- (480) 401-1811
- Enumerated
- Apr 27, 2023
- Record last updated
- May 12, 2026
- Medicare enrollment
- Enrolled (PECOS I20241220001061); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Verify Gary Smithson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 011342Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average family medicine physician in 2024
260 Medicare Part D claims for 88 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium15 claims
- Losartan Potassium15 claims
- Lisinopril14 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 Wellness ResourcesMesa, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Smithson among 3,119 family medicine physician records in Arizona
Gary Smithson, DO 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 2023, is newer than 94% of them.
- NPI issued2023 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2023 · median 2006 among the 1,775 with a school on file
- Record last updated2026 · 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).
12 family medicine physician records list a practice address in San Tan Valley
They are 12 of the 505 NPPES records with a practice address in San Tan Valley, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in San Tan Valley → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Matthew Cook, DOSan Tan Valley, AZ 851401114451986
- Austin Cotter, MDQueen Creek, AZ 851401811691785
- Merrion Dawson, MDSan Tan Valley, AZ 851401952042947
- Aran Deol, MDQueen Creek, AZ 851401083285688
- Elizabeth Fox-MtandikaSan Tan Valley, AZ 851401205397288
- Brooke Popelas, DOSan Tan Valley, AZ 851401962084368
- Nathan Russell, MDSan Tan Valley, AZ 851401205360237
- Donald Swain, DOSan Tan Valley, AZ 851401801418223
Common questions
What is Gary Smithson, DO's NPI number?
Gary Smithson, DO's National Provider Identifier (NPI) is 1891483731, issued on Apr 27, 2023. An NPI identifies a provider in billing; it is not a license.
Where is Gary Smithson, DO located?
The NPPES record lists a practice address at 36543 N Gantzel RD Ste 102, San Tan Valley, AZ, 85140. Phone: (480) 401-1811. Providers update this record themselves, so call before visiting.
How can I verify Gary Smithson, DO's license?
NPPES lists Arizona license number 011342, 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 Gary Smithson, DO prescribe under Medicare Part D?
In 2024, Gary Smithson, DO had 260 Medicare Part D claims for 88 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.