Trenton Welsh, DO
Family Medicine Physician · Phoenix, AZ
Trenton Welsh, DO is a family medicine physician with a practice address in Phoenix, Arizona, and NPI 1043890213, issued on Apr 12, 2021. Check the license (Arizona 011116, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Trenton Welsh
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 011116 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 3311 N 44TH St, Phoenix, AZ 85018
- Phone
- (480) 882-7360
- Enumerated
- Apr 12, 2021
- Record last updated
- Aug 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20240805003781); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 3311 N 44TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Trenton Welsh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 011116Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average family medicine physician in 2024
561 Medicare Part D claims for 117 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Atorvastatin Calcium46 claims
- Albuterol Sulfate Hfa28 claims
- Levothyroxine Sodium23 claims
- Amlodipine Besylate17 claims
- Omeprazole17 claims
- Sertraline Hcl16 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
- Honorhealth Medical Group, LLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Trenton Welsh among 3,119 family medicine physician records in Arizona
Trenton Welsh, 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 2021, is newer than 88% of them.
- NPI issued2021 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2021 · 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 →
The 8 family medicine physician records with the nearest ZIP codes
- Gregory Bell, MDPhoenix, AZ 850181730168204
- Ethan Bindelglas, MDPhoenix, AZ 850181245218080
- Steven Bowley, MDPhoenix, AZ 850181639164650
- Frank Cibulka, M.D.Phoenix, AZ 850181760472351
- Samuel Clark, MDPhoenix, AZ 850181073506036
- James Doris, MDPhoenix, AZ 850181033101001
- Gargi Dwivedi, M.D.Phoenix, AZ 850181700874153
- Allan Goldman, D.O.Phoenix, AZ 850181215996640
Common questions
What is Trenton Welsh, DO's NPI number?
Trenton Welsh, DO's National Provider Identifier (NPI) is 1043890213, issued on Apr 12, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Trenton Welsh, DO located?
The NPPES record lists a practice address at 3311 N 44TH St, Phoenix, AZ, 85018. Phone: (480) 882-7360. Providers update this record themselves, so call before visiting.
How can I verify Trenton Welsh, DO's license?
NPPES lists Arizona license number 011116, 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 Trenton Welsh, DO prescribe under Medicare Part D?
In 2024, Trenton Welsh, DO had 561 Medicare Part D claims for 117 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.