Andrew Fahlgren, MD
Internal Medicine Physician · Glasgow, MT
Andrew Fahlgren, MD is an internal medicine physician with a practice address in Glasgow, Montana, and NPI 1598175754, issued on Apr 28, 2014. Check the license (Montana 58783, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Andrew Fahlgren
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 58783 MT
Self-reported in NPPES; status is on the state search - Practice location
- 221 5TH Ave S, Glasgow, MT 59230
- Phone
- (406) 228-3400
- Enumerated
- Apr 28, 2014
- Record last updated
- May 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (406) 228-3413
- Medicare enrollment
- Enrolled (PECOS I20170902000019); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 324 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.
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- Desiree CavanFamily Nurse Practitioner1386161966
- Anthony Colacino, M.D.Surgery Physician1114322898
- Robert Collins, MDObstetrics & Gynecology Physician1932558129
Verify Andrew Fahlgren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 58783Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.4 times the Medicare Part D claims of the average internal medicine physician in 2024
14,126 Medicare Part D claims for 491 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 1,000 claims were for opioids.
Most prescribed
- Losartan Potassium637 claims
- Levothyroxine Sodium501 claims
- Atorvastatin Calcium500 claims
- Omeprazole430 claims
- Amlodipine Besylate427 claims
- Metoprolol Succinate374 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.
One hospital affiliation
- Frances Mahon Deaconess HospitalGlasgow, MT · Critical Access Hospitals
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).
Andrew Fahlgren among 324 internal medicine physician records in Montana
Andrew Fahlgren, MD is one of 324 internal medicine physician records with a practice address in Montana. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.
- NPI issued2014 · 80% of these records are older, 19% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2014 · median 2006 among the 191 with a school on file
- Record last updated2021 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in Glasgow
They are 2 of the 78 NPPES records with a practice address in Glasgow, and 324 internal medicine physician records in Montana.
All 324 in Montana → Every provider in Glasgow → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Janet Armstrong, M.D.Glasgow, MT 592301215949557
- Jimmy Gray, MDPoplar, MT 592551437191699
- Scott Falley, MDWolf Point, MT 592011417971557
- Rajohn Karanjai, M,D.Sidney, MT 592701407929524
- Jerome Kessler, M.D.Sidney, MT 592701942551106
- Noel Nguewoun HerveSidney, MT 592701275072456
- Edward Pierce, MD PCSidney, MT 592701972681831
- Stephen Base, MDMiles City, MT 593011225050453
Common questions
What is Andrew Fahlgren, MD's NPI number?
Andrew Fahlgren, MD's National Provider Identifier (NPI) is 1598175754, issued on Apr 28, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Fahlgren, MD located?
The NPPES record lists a practice address at 221 5TH Ave S, Glasgow, MT, 59230. Phone: (406) 228-3400. Providers update this record themselves, so call before visiting.
How can I verify Andrew Fahlgren, MD's license?
NPPES lists Montana license number 58783, 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 Andrew Fahlgren, MD prescribe under Medicare Part D?
In 2024, Andrew Fahlgren, MD had 14,126 Medicare Part D claims for 491 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.