Mark Andrew Hiesterman, D.O.
Surgery Physician · Glasgow, MT
Mark Andrew Hiesterman, D.O. is a surgery physician with a practice address in Glasgow, Montana, and NPI 1699980367, issued on May 14, 2007. Check the license (Montana 131349, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Mark Andrew Hiesterman
- Credential
- D.O.
- Primary taxonomy
- Surgery Physician 208600000X
- License numbers
- 131349 MT
OP60226290 WA
Self-reported in NPPES; status is on the state search - Practice location
- 221 5TH Ave S, Glasgow, MT 59230
- Phone
- (406) 228-3536
- Enumerated
- May 14, 2007
- Record last updated
- Aug 6, 2024
- Medicare enrollment
- Enrolled (PECOS I20240717000336); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 136 in Montana → Look up another NPI →
Also registered at 221 5TH Ave S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janet Armstrong, M.D.Internal Medicine Physician1215949557
- Gordon Bell, M.D.Family Medicine Physician1750393914
- Kristina Bengochea, LCPCMental Health Counselor1609221142
- Desiree CavanFamily Nurse Practitioner1386161966
- Anthony Colacino, M.D.Surgery Physician1114322898
- Robert Collins, MDObstetrics & Gynecology Physician1932558129
Verify Mark Andrew Hiesterman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 131349Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average surgery physician in 2024
34 Medicare Part D claims for 34 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 59% of claims.
Most prescribed
- Peg-3350 And Electrolytes20 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.
2 hospitals and group practices
- Frances Mahon Deaconess HospitalGlasgow, MT · Critical Access Hospitals
- Pro Health One IncGreat Falls, MT
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).
Mark Andrew Hiesterman among 136 surgery physician records in Montana
Mark Andrew Hiesterman, D.O. is one of 136 surgery physician records with a practice address in Montana. 75% 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 51% of them.
- NPI issued2007 · 51% of these records are older, 31% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2005 · median 2003 among the 92 with a school on file
- Record last updated2024 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 surgery physician records list a practice address in Glasgow
They are 3 of the 78 NPPES records with a practice address in Glasgow, and 136 surgery physician records in Montana.
All 136 in Montana → Every provider in Glasgow → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Anthony Colacino, M.D.Glasgow, MT 592301114322898
- Anne Williams, M.D.Glasgow, MT 592301104937499
- Ruth Wyckoff, M.D.Plentywood, MT 592541992904833
- Edward Bergin, MDSidney, MT 592701902980907
- John Carey, MDSidney, MT 592701689667115
- Peter Deveaux, M.D..Sidney, MT 592701336102227
- Deborah Harris, D.O.Sidney, MT 592701891717112
- Kelly O'Neal, MDSidney, MT 592701629156427
Common questions
What is Mark Andrew Hiesterman, D.O.'s NPI number?
Mark Andrew Hiesterman, D.O.'s National Provider Identifier (NPI) is 1699980367, issued on May 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Andrew Hiesterman, D.O. located?
The NPPES record lists a practice address at 221 5TH Ave S, Glasgow, MT, 59230. Phone: (406) 228-3536. Providers update this record themselves, so call before visiting.
How can I verify Mark Andrew Hiesterman, D.O.'s license?
NPPES lists Montana license number 131349, 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 Mark Andrew Hiesterman, D.O. prescribe under Medicare Part D?
In 2024, Mark Andrew Hiesterman, D.O. had 34 Medicare Part D claims for 34 beneficiaries; the average among surgery physician prescribers was 147. 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.