Karl Sorenson, M.D.
Hematology & Oncology Physician · Missoula, MT
Karl Sorenson, M.D. is a hematology & oncology physician with a practice address in Missoula, Montana, and NPI 1114306230, issued on May 21, 2015. Check the license (Montana MED-PHYS-LIC-91688, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Karl Sorenson
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License numbers
- MED-PHYS-LIC-91688 MT
62624 MN
Self-reported in NPPES; status is on the state search - Practice location
- 500 W Broadway St, Missoula, MT 59802
- Phone
- (406) 728-2539
- Enumerated
- May 21, 2015
- Record last updated
- Oct 25, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (406) 329-5663
- Medicare enrollment
- Enrolled (PECOS I20210407002222); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 44 in Montana → Look up another NPI →
Also registered at 500 W Broadway St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karl Sorenson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license MED-PHYS-LIC-91688Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
592 Medicare Part D claims for 102 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 45 claims were for opioids.
Most prescribed
- Letrozole79 claims
- Prochlorperazine Maleate44 claims
- Prednisone34 claims
- Ondansetron Odt27 claims
- Oxycodone Hcl26 claims
- Ondansetron Hcl23 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.
Bills Medicare through 2 group practices
- Providence Health And Services MtMissoula, MT
- Rchp Billings - Missoula LLCMissoula, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karl Sorenson among 44 hematology & oncology physician records in Montana
Karl Sorenson, M.D. is one of 44 hematology & oncology physician records with a practice address in Montana. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 91% of them.
- NPI issued2015 · 91% of these records are older, 5% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2014 · median 2000 among the 28 with a school on file
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Montana
There are 44 hematology & oncology physician records in Montana.
All 44 in Montana → Every provider in Missoula → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Patrick Beatty, MDMissoula, MT 598021609803543
- John Linford, M.D.Missoula, MT 598021396949244
- William Nichols, MDMissoula, MT 598021518994458
- Aurora Norman, MDMissoula, MT 598021053976514
- Linda Ries, MDMissoula, MT 598021922034693
- Sarah Scott, MDMissoula, MT 598021144335530
- Michael Snyder, MDMissoula, MT 598021306872999
- Stephen Speckart, MDMissoula, MT 598021376579045
Common questions
What is Karl Sorenson, M.D.'s NPI number?
Karl Sorenson, M.D.'s National Provider Identifier (NPI) is 1114306230, issued on May 21, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Karl Sorenson, M.D. located?
The NPPES record lists a practice address at 500 W Broadway St, Missoula, MT, 59802. Phone: (406) 728-2539. Providers update this record themselves, so call before visiting.
How can I verify Karl Sorenson, M.D.'s license?
NPPES lists Montana license number MED-PHYS-LIC-91688, 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 Sorenson, M.D. prescribe under Medicare Part D?
In 2024, Karl Sorenson, M.D. had 592 Medicare Part D claims for 102 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.