Steven Gerstner, MD
NPI 1124130695 · Internal Medicine Physician · Billings, MT
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Steven Gerstner, MD is a Internal Medicine Physician provider in Billings, MT (NPI 1124130695).
Provider details
- NPI number
- 1124130695
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 6476 (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
19 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
1,100 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 | 559 | $80 |
| 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 | 365 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 98 | $60 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 50 | $89 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 17 | $106 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 97 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 230 | 71 |
| Atorvastatin Calcium | 221 | 63 |
| Levothyroxine Sodium | 212 | 56 |
| Rosuvastatin Calcium | 208 | 60 |
| Lisinopril | 197 | 53 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 171 | 37 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-31
- Last updated
- 2022-02-22
- Certified
- 2022-02-22
Frequently asked questions
- What is Steven Gerstner's NPI number?
- Steven Gerstner's National Provider Identifier (NPI) is 1124130695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Gerstner's specialty?
- Steven Gerstner is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Steven Gerstner located?
- Steven Gerstner's practice location on file with NPPES is 801 N 29th St, Billings, MT 59101-0905.
- What is Steven Gerstner's phone number?
- The practice phone number listed in the NPPES registry for Steven Gerstner is (406) 238-2500.
- Does Steven Gerstner accept Medicare?
- Steven Gerstner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Steven Gerstner's NPI active?
- Yes — Steven Gerstner's NPI (1124130695) is active in the NPPES registry as of the last update on 2022-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.