Karl R. Westenfelder, M.D.
Urology Physician · Missoula, MT
Karl R. Westenfelder, M.D. is a urology physician with a practice address in Missoula, Montana, and NPI 1174502173, issued on Jan 10, 2006. Check the license (Montana 8443, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Karl R. Westenfelder
- Credential
- M.D.
- Primary taxonomy
- Urology Physician 208800000X
- License number
- 8443 MT
Self-reported in NPPES; status is on the state search - Practice location
- 2875 Tina Ave, Missoula, MT 59808
- Phone
- (406) 728-3366
- Enumerated
- Jan 10, 2006
- Record last updated
- Apr 28, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (406) 728-0651
- Medicaid ID
- 0063947 MT
- Medicare enrollment
- Enrolled (PECOS I20031215000814); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1998
- Entity
- Type 1 · individual
Also registered at 2875 Tina Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hannah Fouts, PT, DPTPhysical Therapist1497444350
- Nicole Johnsen, PTPhysical Therapist1528991999
- Whitney Martin, PA-C, RDPhysician Assistant1316049695
- Trudi Mingus, M.S., SLPSpeech-Language Pathologist1073059358
- Heidi Waits, APRNNurse Practitioner1174154108
Verify Karl R. Westenfelder in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 8443Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average urology physician in 2024
1,120 Medicare Part D claims for 293 beneficiaries, against an average of 1,340 among the 10,782 providers of this specialty who prescribed in Part D. 74 claims were for opioids.
Most prescribed
- Finasteride219 claims
- Orgovyx217 claims
- Tamsulosin Hcl143 claims
- Abiraterone Acetate119 claims
- Prednisone59 claims
- Xtandi59 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $653.83
25 payments; by number, the most common kind was food and beverage; the largest payer was Dornier MedTech America, Inc. The 9,340 providers of this specialty with any payment received $3,800.04 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 one group practice
- Five Valleys UrologyMissoula, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Urology Physician providers in Montana
There are 53 urology physician records in Montana.
Other urology physician records in Montana
- Gregory Adams, M.D.Kalispell, MT1366659476
- Michael Agee, M.D.Helena, MT1306091541
- John Andenoro, MDKalispell, MT1518058551
- Rollin Bearss, M.D.Great Falls, MT1134144231
- Michael Berson, MDKalispell, MT1588955256
- Lisa Bland, M.D.Billings, MT1427279546
- Ruth Blum, M.D.Billings, MT1588058168
- Karin Brown, M.D.Billings, MT1306086293
- Kevin Brown, D.O,Helena, MT1487073151
- Leonard Christensen, MDFort Harrison, MT1366450488
Common questions
What is Karl R. Westenfelder, M.D.'s NPI number?
Karl R. Westenfelder, M.D.'s National Provider Identifier (NPI) is 1174502173, issued on Jan 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karl R. Westenfelder, M.D. located?
The NPPES record lists a practice address at 2875 Tina Ave, Missoula, MT, 59808. Phone: (406) 728-3366. Providers update this record themselves, so call before visiting.
How can I verify Karl R. Westenfelder, M.D.'s license?
NPPES lists Montana license number 8443, 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 Karl R. Westenfelder, M.D. prescribe under Medicare Part D?
In 2024, Karl R. Westenfelder, M.D. had 1,120 Medicare Part D claims for 293 beneficiaries; the average among urology physician prescribers was 1,340. Part D covers Medicare prescriptions only.
What is Karl R. Westenfelder, M.D.'s MIPS final score?
The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.