NPPES file of Aug 9, 2026

Susan Petersen, MD

Family Medicine Physician · Billings, MT

Susan Petersen, MD is a family medicine physician with a practice address in Billings, Montana, and NPI 1861434037, issued on Jun 12, 2006. Check the license (Montana 8399, as entered in NPPES) on the Montana Board of Medical Examiners; 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
1861434037
Name
Susan Petersen
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
8399 MT
Self-reported in NPPES; status is on the state search
Practice location
2019 Broadwater Ave, Billings, MT 59102
Phone
(406) 237-5200
Enumerated
Jun 12, 2006
Record last updated
Jan 9, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(406) 237-5205
Medicare enrollment
Enrolled (PECOS I20100329000833); accepts Medicare assignment
Medical or professional school
University Of Iowa, Rj & L Carver College Of Medicine, 1995
Telehealth
Offers telehealth (CMS)
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 2019 Broadwater Ave

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

  1. Steve Bents, PACMedical Physician Assistant1740224450
  2. Doris BiersdorfRegistered Dietitian1407005309
  3. Claire Buckingham, NPNurse Practitioner1598230724
  4. Jon Bullman, MDFamily Medicine Physician1255373411
  5. Taylor Chaffin, FNPNurse Practitioner1073229787
  6. Alexander Garner, PAPhysician Assistant1942806153

Verify Susan Petersen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMontana Board of Medical Examiners
    Search for license 8399
    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
Open the Montana license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.9 times the Medicare Part D claims of the average family medicine physician in 2024

10,213 Medicare Part D claims for 572 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims. 640 claims were for opioids.

  1. Susan Petersen10,213
  2. Specialty average3,544

Most prescribed

  1. Levothyroxine Sodium634 claims
  2. Atorvastatin Calcium372 claims
  3. Potassium Chloride324 claims
  4. Losartan Potassium297 claims
  5. Amlodipine Besylate280 claims
  6. Lisinopril243 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. Scl Health Medical Group - Billings LLCBillings, MT

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

Susan Petersen among 775 family medicine physician records in Montana

Susan Petersen, MD is one of 775 family medicine physician records with a practice address in Montana. 75% 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 9% of them.

  • NPI issued2006 · 9% of these records are older, 50% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 60% of these records are
  • Graduated1995 · median 2007 among the 464 with a school on file
  • Record last updated2014 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

111 family medicine physician records list a practice address in Billings

They are 111 of the 4,035 NPPES records with a practice address in Billings, and 775 family medicine physician records in Montana.

The 8 family medicine physician records with the nearest ZIP codes

  1. Jon Bullman, MDBillings, MT 591021255373411
  2. Shelly Castles, MDBillings, MT 591021952410953
  3. Heidi Duncan, MDBillings, MT 591021376645341
  4. Daniel Gall, MDBillings, MT 591021992817951
  5. Donald Grewell, DOBillings, MT 591021326150285
  6. Lawrence Hemmer, MDBillings, MT 591021073625463
  7. Vernon Johnson, MDBillings, MT 591021679568190
  8. James King, MDBillings, MT 591021174625271

Common questions

What is Susan Petersen, MD's NPI number?

Susan Petersen, MD's National Provider Identifier (NPI) is 1861434037, issued on Jun 12, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Susan Petersen, MD located?

The NPPES record lists a practice address at 2019 Broadwater Ave, Billings, MT, 59102. Phone: (406) 237-5200. Providers update this record themselves, so call before visiting.

How can I verify Susan Petersen, MD's license?

NPPES lists Montana license number 8399, 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 Susan Petersen, MD prescribe under Medicare Part D?

In 2024, Susan Petersen, MD had 10,213 Medicare Part D claims for 572 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.