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
8 nearest otolaryngology physician records → All 39 in Montana → Look up another NPI →
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).
Karen Ahlstrom among 39 otolaryngology physician records in Montana
Karen Ahlstrom, MD is one of 39 otolaryngology physician records with a practice address in Montana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 15% of them.
- NPI issued2006 · 15% of these records are older, 41% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1996 · median 2000 among the 30 with a school on file
- Record last updated2023 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Y00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Otolaryngology Physician providers in Montana
There are 39 otolaryngology physician records in Montana.
All 39 in Montana → Every provider in Missoula → Otolaryngology Physician nationwide →
The 8 otolaryngology physician records with the nearest ZIP codes
- Daniel Braby, MDMissoula, MT 598011396731949
- Jonathan Fowlkes, MDMissoula, MT 598011720346844
- Phillip Gardner, MDMissoula, MT 598011003843897
- Jeffrey Haller, MDMissoula, MT 598011194712307
- Thomas Hoshaw, M.D.Missoula, MT 598011205106234
- Peter Vondoersten, MDMissoula, MT 598011619962990
- Duncan Watley, MDMissoula, MT 598011689023038
- Bradley Morris, MDMissoula, MT 598021013798149
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.