John Abraham Fenstermaker, D.O.
Family Medicine Physician · Pocatello, ID
John Abraham Fenstermaker, D.O. is a family medicine physician with a practice address in Pocatello, Idaho, and NPI 1548581390, issued on Jun 16, 2010. Check the license (Idaho O-0623, as entered in NPPES) on the Idaho Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- John Abraham Fenstermaker
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- O-0623 ID
MR-1113 ID
Self-reported in NPPES; status is on the state search - Practice location
- 1951 Bench RD, Pocatello, ID 83201
- Phone
- (208) 238-1000
- Enumerated
- Jun 16, 2010
- Record last updated
- Nov 12, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (208) 238-0009
- Medicare enrollment
- Enrolled (PECOS I20130709000136); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1951 Bench RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicolette Hampton, NP-CFamily Nurse Practitioner1184083818
- Robert Jones, MDOphthalmology Physician1912015330
- Brandon Mickelsen, D.O.Family Medicine Physician1417987686
- Travis Nielsen, D.O.Family Medicine Physician1730340365
- Blaine Olsen, D.O.Family Medicine Physician1922236454
- Michael Otto, RPTPhysical Therapist1558324590
Verify John Abraham Fenstermaker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license O-0623Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% fewer Medicare Part D claims than the average family medicine physician in 2024
2,281 Medicare Part D claims for 172 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 48 claims were for opioids.
Most prescribed
- Levothyroxine Sodium135 claims
- Warfarin Sodium83 claims
- Atorvastatin Calcium82 claims
- Eliquis75 claims
- Omeprazole71 claims
- Gabapentin68 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.
4 hospitals and group practices
- Health West IncPocatello, ID
- Minidoka Memorial HospitalRupert, ID · Critical Access Hospitals
- Optimum Health PLLCPocatello, ID
- Pocatello Health Services LLCPocatello, ID
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).
113 family medicine physician records list a practice address in Pocatello
They are 113 of the 1,968 NPPES records with a practice address in Pocatello, and 1,316 family medicine physician records in Idaho.
All 113 in Pocatello → All 1,316 in Idaho → Every provider in Pocatello →
Other family medicine physician records in Idaho
- Peter Abraham, D.O.Eagle, ID1043650633
- Michael Abrahams, MDSt Maries, ID1700078581
- Suhrei Acevedo-Daniels, MDMelba, ID1508824640
- Brenda Adams, MDMeridian, ID1205887288
- Joshua Adams, M.D.Boise, ID1568789980
- Rebecca Adams, MDIdaho Falls, ID1689610842
- Tracy Adams, DOBoise, ID1003438730
- William Adams, DORigby, ID1467403733
- Grace Adamson, MDBoise, ID1497246136
- Lois Adrian, M.D.Hailey, ID1164463964
Common questions
What is John Abraham Fenstermaker, D.O.'s NPI number?
John Abraham Fenstermaker, D.O.'s National Provider Identifier (NPI) is 1548581390, issued on Jun 16, 2010. An NPI identifies a provider in billing; it is not a license.
Where is John Abraham Fenstermaker, D.O. located?
The NPPES record lists a practice address at 1951 Bench RD, Pocatello, ID, 83201. Phone: (208) 238-1000. Providers update this record themselves, so call before visiting.
How can I verify John Abraham Fenstermaker, D.O.'s license?
NPPES lists Idaho license number O-0623, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Abraham Fenstermaker, D.O. prescribe under Medicare Part D?
In 2024, John Abraham Fenstermaker, D.O. had 2,281 Medicare Part D claims for 172 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.