NPPES file of Aug 9, 2026

Kathryn M. Isakson, PA-C

Physician Assistant · Butte, MT

Kathryn M. Isakson, PA-C is a physician assistant with a practice address in Butte, Montana, and NPI 1245872738, issued on Oct 16, 2019. Check the license (Montana MED-PAC-LIC-79758, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1245872738
Name
Kathryn M. Isakson
Credential
PA-C
Primary taxonomy
Physician Assistant 363A00000X
License number
MED-PAC-LIC-79758 MT
Self-reported in NPPES; status is on the state search
Practice location
445 Centennial Ave, Butte, MT 59701
Phone
(406) 723-4075
Enumerated
Oct 16, 2019
Record last updated
Feb 20, 2024
Medicare enrollment
Enrolled (PECOS I20191205001190); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 445 Centennial Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Laurie AndrewsClinical Social Worker1376166868
  2. Kara Bankiewicz, DMDGeneral Practice Dentistry1063934206
  3. Maria Bartoletti, DMDPublic Health Dentistry1558794404
  4. Mario Bartoletti, DMDDentist1447634407
  5. Kerry Bohlken, APRN, FNP-CFamily Nurse Practitioner1679275697
  6. Serena Brewer, D.OFamily Medicine Physician1487853404

Verify Kathryn M. Isakson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Montana board licenses this profession
    Search for license MED-PAC-LIC-79758
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Montana license search

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10.7 times the Medicare Part D claims of the average physician assistant in 2024

8,869 Medicare Part D claims for 293 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 163 claims were for opioids.

  1. Kathryn Isakson8,869
  2. Specialty average830

Most prescribed

  1. Atorvastatin Calcium467 claims
  2. Lisinopril379 claims
  3. Gabapentin322 claims
  4. Omeprazole303 claims
  5. Metformin Hcl199 claims
  6. Levothyroxine Sodium184 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 one group practice

  1. Butte Silver Bow Primary Health Care Clinic IncButte, MT

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

22 physician assistant records list a practice address in Butte

They are 22 of the 744 NPPES records with a practice address in Butte, and 698 physician assistant records in Montana.

Other physician assistant records in Montana

  1. Jessika Abbrescia, PACKalispell, MT1740959915
  2. Cynthia Alarcon, PA-CHelena, MT1386981686
  3. Patrick Alduenda, PA-CHelena, MT1710967724
  4. Sheryl Alexander, D.C., P.A.Missoula, MT1326199951
  5. Jesse Alfiero, PA-CRonan, MT1396491155
  6. Robert Alfiero, PA-CRonan, MT1417029059
  7. Janel Allison-Shamblin, PA-CBozeman, MT1437626751
  8. Luke Altenhofen, PA-CLame Deer, MT1407221708
  9. Alexandra AlthofBillings, MT1487338034
  10. Brenda Anderson, PA-CKalispell, MT1912145467

Common questions

What is Kathryn M. Isakson, PA-C's NPI number?

Kathryn M. Isakson, PA-C's National Provider Identifier (NPI) is 1245872738, issued on Oct 16, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn M. Isakson, PA-C located?

The NPPES record lists a practice address at 445 Centennial Ave, Butte, MT, 59701. Phone: (406) 723-4075. Providers update this record themselves, so call before visiting.

How can I verify Kathryn M. Isakson, PA-C's license?

NPPES lists Montana license number MED-PAC-LIC-79758, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.

How much does Kathryn M. Isakson, PA-C prescribe under Medicare Part D?

In 2024, Kathryn M. Isakson, PA-C had 8,869 Medicare Part D claims for 293 beneficiaries; the average among physician assistant prescribers was 830. 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.