NPPES file of Aug 9, 2026

Abby Bymaster

Physician Assistant · Columbus, MT

Abby Bymaster is a physician assistant with a practice address in Columbus, Montana, and NPI 1598448011, issued on Aug 10, 2023. Check the license 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
1598448011
Name
Abby Bymaster
Primary taxonomy
Physician Assistant 363A00000X
Practice location
710 11TH St N, Columbus, MT 59019
Phone
(406) 322-1000
Enumerated
Aug 10, 2023
Record last updated
Aug 10, 2023
Medicare enrollment
Enrolled (PECOS I20231018003565); 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 710 11TH St N

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

  1. Cassidy BoyerCertified Registered Nurse Anesthetist1427379353
  2. Kelcy EllisOccupational Therapist1508482076
  3. Susan Ivankovich, PA-CMedical Physician Assistant1396799524
  4. Nicole Legere, FNPFamily Nurse Practitioner1396910006
  5. Valerie Maeker, OTOccupational Therapist1366828782
  6. William Meredith, OTR/L, OTDOccupational Therapist1447865910

Verify Abby Bymaster in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Montana board licenses this professionCheck 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
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29% more Medicare Part D claims than the average physician assistant in 2024

1,068 Medicare Part D claims for 239 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 82 claims were for opioids.

  1. Abby Bymaster1,068
  2. Specialty average830

Most prescribed

  1. Lisinopril49 claims
  2. Potassium Chloride44 claims
  3. Hydrocodone-Acetaminophen43 claims
  4. Levothyroxine Sodium34 claims
  5. Prednisone33 claims
  6. Amlodipine Besylate27 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. Stillwater Hospital Association IncColumbus, MT

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

Abby Bymaster among 698 physician assistant records in Montana

Abby Bymaster is one of 698 physician assistant records with a practice address in Montana. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 85% of them.

  • NPI issued2023 · 85% of these records are older, 9% newer
  • In a Medicare fileYes · 84% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2023 · median 2016 among the 514 with a school on file
  • Record last updated2023 · 42% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1 physician assistant record lists a practice address in Columbus

They are 1 of the 37 NPPES records with a practice address in Columbus, and 698 physician assistant records in Montana.

The 8 physician assistant records with the nearest ZIP codes

  1. David Dickinson, PA-CCrow Agency, MT 590221861586745
  2. Mary TruslerCrow Agency, MT 590221225716673
  3. William Walker, PA-CCrow Agency, MT 590221013227321
  4. Chelsey Clark, PA-C, RDN, CDCES,CLCBig Timber, MT 590111699172049
  5. Kimberley Caprata, PA-CHardin, MT 590341326085762
  6. Paul Murter, PHYSICIAN ASSISTANTHardin, MT 590341912126368
  7. Stefanie Rickhoff, PAHardin, MT 590341518509298
  8. Brianna SolisHarlowton, MT 590361689479149

Common questions

What is Abby Bymaster's NPI number?

Abby Bymaster's National Provider Identifier (NPI) is 1598448011, issued on Aug 10, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Abby Bymaster located?

The NPPES record lists a practice address at 710 11TH St N, Columbus, MT, 59019. Phone: (406) 322-1000. Providers update this record themselves, so call before visiting.

How can I verify Abby Bymaster's license?

Search the Montana board that licenses this profession; the NPPES record confirms identity only.

How much does Abby Bymaster prescribe under Medicare Part D?

In 2024, Abby Bymaster had 1,068 Medicare Part D claims for 239 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.