Steffan May, M.D.
NPI 1194915397 · Internal Medicine Physician · Bozeman, MT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steffan May, M.D. is a Internal Medicine Physician provider in Bozeman, MT (NPI 1194915397).
Provider details
- NPI number
- 1194915397
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 12395 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,257 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 418 | $70 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 299 | $16 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 212 | $26 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 186 | $88 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 142 | $56 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 106 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 765 | 224 |
| Amlodipine Besylate | 508 | 139 |
| Levothyroxine Sodium | 385 | 87 |
| Losartan Potassium | 281 | 81 |
| Oxycodone Hcl | 261 | 37 |
| Lisinopril | 238 | 65 |
| Gabapentin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-07-25
- Last updated
- 2025-04-09
- Certified
- 2025-04-09
Frequently asked questions
- What is Steffan May's NPI number?
- Steffan May's National Provider Identifier (NPI) is 1194915397, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steffan May's specialty?
- Steffan May is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Steffan May located?
- Steffan May's practice location on file with NPPES is 937 Highland Blvd Ste 5410, Bozeman, MT 59715-6916.
- What is Steffan May's phone number?
- The practice phone number listed in the NPPES registry for Steffan May is (406) 522-2400.
- Does Steffan May accept Medicare?
- Steffan May is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steffan May's NPI active?
- Yes — Steffan May's NPI (1194915397) is active in the NPPES registry as of the last update on 2025-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.