Clinton McMahill, M.D.
Internal Medicine Physician · Lander, WY
Clinton McMahill, M.D. is an internal medicine physician with a practice address in Lander, Wyoming, and NPI 1245556190, issued on Apr 18, 2010. Check the license (Wyoming TL2257, as entered in NPPES) on the Wyoming Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Clinton McMahill
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- TL2257 WY
Self-reported in NPPES; status is on the state search - Practice location
- 745 Buena Vista Dr, Lander, WY 82520
- Phone
- (307) 332-2941
- Enumerated
- Apr 18, 2010
- Record last updated
- Jul 25, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20131001000210); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 134 in Wyoming → Look up another NPI →
Also registered at 745 Buena Vista Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Todd Bainter, D.O.Internal Medicine Physician1427226034
- James Brubaker, M.D.Obstetrics & Gynecology Physician1245326867
- Kristine Cardinal, FNP-CFamily Nurse Practitioner1093203069
- Robert Darr, PA-CPhysician Assistant1942301254
- Edward Dowie, P.A.-C.Physician Assistant1366538969
- Wendy Eaton, MSPTPhysical Therapist1457559940
Verify Clinton McMahill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWyoming Board of Medicine
Search for license TL2257Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average internal medicine physician in 2024
8,107 Medicare Part D claims for 455 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 139 claims were for opioids.
Most prescribed
- Atorvastatin Calcium656 claims
- Levothyroxine Sodium403 claims
- Lisinopril251 claims
- Metformin Hcl242 claims
- Losartan Potassium233 claims
- Omeprazole224 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.
Industry payments in 2024: $16.33
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Lander Medical Clinic PCLander, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clinton McMahill among 134 internal medicine physician records in Wyoming
Clinton McMahill, M.D. is one of 134 internal medicine physician records with a practice address in Wyoming. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 66% of them.
- NPI issued2010 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2010 · median 2010 among the 77 with a school on file
- Record last updated2013 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Wyoming practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 internal medicine physician records list a practice address in Lander
They are 5 of the 311 NPPES records with a practice address in Lander, and 134 internal medicine physician records in Wyoming.
All 134 in Wyoming → Every provider in Lander → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Todd Bainter, D.O.Lander, WY 825201427226034
- Donald Gullickson, M.D.Lander, WY 825201497840110
- Andrew McAlpin, MDLander, WY 825201386714129
- Gentian Scheer, M.D.Lander, WY 825201912093667
- Elizabeth Marshall, MDArapaho, WY 825101528454956
- Austin DoppRiverton, WY 825011235580036
- Roger Gose, MDRiverton, WY 825011972546778
- Glen Hybarger, M.D.Riverton, WY 825011720249899
Common questions
What is Clinton McMahill, M.D.'s NPI number?
Clinton McMahill, M.D.'s National Provider Identifier (NPI) is 1245556190, issued on Apr 18, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Clinton McMahill, M.D. located?
The NPPES record lists a practice address at 745 Buena Vista Dr, Lander, WY, 82520. Phone: (307) 332-2941. Providers update this record themselves, so call before visiting.
How can I verify Clinton McMahill, M.D.'s license?
NPPES lists Wyoming license number TL2257, as entered by the provider. Search the Wyoming Board of Medicine at https://wyomedboard.wyo.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Clinton McMahill, M.D. prescribe under Medicare Part D?
In 2024, Clinton McMahill, M.D. had 8,107 Medicare Part D claims for 455 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.