Thomas Eugene Horst, MD
Family Medicine Physician · Ajo, AZ
Thomas Eugene Horst, MD is a family medicine physician with a practice address in Ajo, Arizona, and NPI 1871642082, issued on Jan 9, 2007. Check the license (Arizona 51196, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Eugene Horst
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 51196 AZ
MD00020253 WA
Self-reported in NPPES; status is on the state search - Practice location
- 410 N Malacate St Ste 100, Ajo, AZ 85321
- Phone
- (520) 387-5651
- Enumerated
- Jan 9, 2007
- Record last updated
- Jun 30, 2023
- Fax
- (520) 387-6036
- Medicaid IDs
- 2025929 WA
8335606 WA - Entity
- Type 1 · individual
Verify Thomas Eugene Horst in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 51196Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
542 Medicare Part D claims for 138 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 52 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen28 claims
- Lisinopril20 claims
- Levothyroxine Sodium19 claims
- Gabapentin18 claims
- Prednisone18 claims
- Oxycodone 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.
3 family medicine physician records list a practice address in Ajo
They are 3 of the 24 NPPES records with a practice address in Ajo, and 3,119 family medicine physician records in Arizona.
All 3 in Ajo → All 3,119 in Arizona → Every provider in Ajo →
Other family medicine physician records in Arizona
- Muhammad Aamer, M.D.Yuma, AZ1437574720
- Ndidi Abara, M.D.Yuma, AZ1295115145
- Steven Abdelmalak, MDScottsdale, AZ1205092806
- Daniel Abelev, MDPhoenix, AZ1417573163
- Lindsey Abeyta, FNPTucson, AZ1043027857
- Modupeola Abiodun, M.D.Chandler, AZ1225326853
- Sara Abolmolouk, MDTucson, AZ1497043715
- Ahmed Abouzeid, MDGlendale, AZ1871619601
- Edward Abraham, M.D.Phoenix, AZ1144593211
- Rebecca Abraham, M.D.Surprise, AZ1437273323
Common questions
What is Thomas Eugene Horst, MD's NPI number?
Thomas Eugene Horst, MD's National Provider Identifier (NPI) is 1871642082, issued on Jan 9, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Eugene Horst, MD located?
The NPPES record lists a practice address at 410 N Malacate St Ste 100, Ajo, AZ, 85321. Phone: (520) 387-5651. Providers update this record themselves, so call before visiting.
How can I verify Thomas Eugene Horst, MD's license?
NPPES lists Arizona license number 51196, 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 Thomas Eugene Horst, MD prescribe under Medicare Part D?
In 2024, Thomas Eugene Horst, MD had 542 Medicare Part D claims for 138 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.