Karen Ahlstrom, MD
Otolaryngology Physician · Missoula, MT
Karen Ahlstrom, MD is an otolaryngology physician with a practice address in Missoula, Montana, and NPI 1922058031, issued on May 11, 2006. Check the license (Montana 129134, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Karen Ahlstrom
- Credential
- MD
- Primary taxonomy
- Otolaryngology Physician 207Y00000X
- License numbers
- 129134 MT
MD00039605 WA
Self-reported in NPPES; status is on the state search - Practice location
- 700 W Kent Ave, Missoula, MT 59801
- Phone
- (406) 541-3277
- Enumerated
- May 11, 2006
- Record last updated
- Sep 26, 2023
- Fax
- (406) 541-3811
- Medicare enrollment
- Enrolled (PECOS I20230825003329); accepts Medicare assignment
- Medical or professional school
- University Of Arizona College Of Medicine, 1996
- Entity
- Type 1 · individual
Also registered at 700 W Kent Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Peter Babcock, O.D.Optometrist1972696995
- Jefferson BerrymanOphthalmology Physician1275995714
- Daniel Braby, MDOtolaryngology Physician1396731949
- Aaron BrannumOptician1922778471
- Marissa Cadena, PA-CPhysician Assistant1669013744
- Victoria Callahan, PA-CPhysician Assistant1568937126
Verify Karen Ahlstrom in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 129134Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average otolaryngology physician in 2024
104 Medicare Part D claims for 70 beneficiaries, against an average of 541 among the 8,339 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.
Most prescribed
- Omeprazole14 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.
Industry payments in 2024: $139.93
3 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 6,429 providers of this specialty with any payment received $1,922.50 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Marcus Daly Memorial Hospital CorporationHamilton, MT
- Rocky Mountain Ear Nose And Throat Center PCMissoula, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Otolaryngology Physician providers in Montana
There are 39 otolaryngology physician records in Montana.
Other otolaryngology physician records in Montana
- Jennifer Andrus, M.D.Billings, MT1265651137
- Jeffrey Baker, MDGreat Falls, MT1902003502
- Jeffrey Bartels, MDKalispell, MT1700837523
- Brett Bennion, MDSidney, MT1275616104
- Daniel Braby, MDMissoula, MT1396731949
- Maria Buniel, M.D.Billings, MT1215253232
- Paul Byorth, M.D.Billings, MT1891868485
- William Caldwell, M.D.Kalispell, MT1205850153
- Michael Dixon, MDHelena, MT1508967126
- Brennan Dodson, MDBozeman, MT1518936533
Common questions
What is Karen Ahlstrom, MD's NPI number?
Karen Ahlstrom, MD's National Provider Identifier (NPI) is 1922058031, issued on May 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Ahlstrom, MD located?
The NPPES record lists a practice address at 700 W Kent Ave, Missoula, MT, 59801. Phone: (406) 541-3277. Providers update this record themselves, so call before visiting.
How can I verify Karen Ahlstrom, MD's license?
NPPES lists Montana license number 129134, 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 Karen Ahlstrom, MD prescribe under Medicare Part D?
In 2024, Karen Ahlstrom, MD had 104 Medicare Part D claims for 70 beneficiaries; the average among otolaryngology physician prescribers was 541. 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.