John Fenstermaker, D.O.
NPI 1548581390 · Family Medicine Physician · Pocatello, ID
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Fenstermaker, D.O. is a Family Medicine Physician provider in Pocatello, ID (NPI 1548581390).
Provider details
- NPI number
- 1548581390
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- MR-1113 (ID)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 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
912 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 185 | $74 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 173 | $46 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 161 | $32 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 94 | $99 |
| Advance Care Planning, First 30 Minutes99497 | 85 | $70 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 135 | 34 |
| Warfarin Sodium | 83 | — |
| Atorvastatin Calcium | 82 | 31 |
| Apixabanbrand: Eliquis | 75 | 13 |
| Omeprazole | 71 | 16 |
| Gabapentin | 68 | 20 |
| Furosemide | 59 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-06-16
- Last updated
- 2013-11-12
Frequently asked questions
- What is John Fenstermaker's NPI number?
- John Fenstermaker's National Provider Identifier (NPI) is 1548581390, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Fenstermaker's specialty?
- John Fenstermaker is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Fenstermaker located?
- John Fenstermaker's practice location on file with NPPES is 1951 Bench Rd, Pocatello, ID 83201-2013.
- What is John Fenstermaker's phone number?
- The practice phone number listed in the NPPES registry for John Fenstermaker is (208) 238-1000.
- Does John Fenstermaker accept Medicare?
- John Fenstermaker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Fenstermaker's NPI active?
- Yes — John Fenstermaker's NPI (1548581390) is active in the NPPES registry as of the last update on 2013-11-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.