Steffan John May, M.D.
Internal Medicine Physician · Bozeman, MT
Steffan John May, M.D. is an internal medicine physician with a practice address in Bozeman, Montana, and NPI 1194915397, issued on Jul 25, 2007. Check the license (Montana 12395, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Steffan John May
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 12395 MT
Self-reported in NPPES; status is on the state search - Practice location
- 937 Highland Blvd Ste 5410, Bozeman, MT 59715
- Phone
- (406) 522-2400
- Enumerated
- Jul 25, 2007
- Record last updated
- Apr 9, 2025
- Fax
- (406) 587-3610
- Medicare enrollment
- Enrolled (PECOS I20101014000324); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 324 in Montana → Look up another NPI →
Also registered at 937 Highland Blvd Ste 5410
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Steffan John May in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 12395Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,759 Medicare Part D claims for 593 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 689 claims were for opioids.
Most prescribed
- Atorvastatin Calcium765 claims
- Amlodipine Besylate508 claims
- Levothyroxine Sodium385 claims
- Losartan Potassium281 claims
- Oxycodone Hcl261 claims
- Lisinopril238 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.
One hospital affiliation
- Bozeman Health Deaconess HospitalBozeman, MT · Acute Care Hospitals4 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Steffan John May among 324 internal medicine physician records in Montana
Steffan John May, M.D. is one of 324 internal medicine physician records with a practice address in Montana. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2007 · median 2006 among the 191 with a school on file
- Record last updated2025 · 52% 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 Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
35 internal medicine physician records list a practice address in Bozeman
They are 35 of the 2,433 NPPES records with a practice address in Bozeman, and 324 internal medicine physician records in Montana.
All 324 in Montana → Every provider in Bozeman → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Timothy Adams, MDBozeman, MT 597151891706537
- James Attarian, MDBozeman, MT 597151144209198
- David Crites, MDBozeman, MT 597151164457453
- Robert Hathaway, MDBozeman, MT 597151427068295
- Michael Herring, MDBozeman, MT 597151104840842
- Pamela Hiebert, MDBozeman, MT 597151023030079
- Thomas Kelly, MDBozeman, MT 597151437148194
- James Loeffelholz, MDBozeman, MT 597151861416331
Common questions
What is Steffan John May, M.D.'s NPI number?
Steffan John May, M.D.'s National Provider Identifier (NPI) is 1194915397, issued on Jul 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Steffan John May, M.D. located?
The NPPES record lists a practice address at 937 Highland Blvd Ste 5410, Bozeman, MT, 59715. Phone: (406) 522-2400. Providers update this record themselves, so call before visiting.
How can I verify Steffan John May, M.D.'s license?
NPPES lists Montana license number 12395, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Steffan John May, M.D. prescribe under Medicare Part D?
In 2024, Steffan John May, M.D. had 7,759 Medicare Part D claims for 593 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.