Sarah Muller Ryersee, DO
Family Medicine Physician · Billings, MT
Sarah Muller Ryersee, DO is a family medicine physician with a practice address in Billings, Montana, and NPI 1184470759, issued on Apr 25, 2024. Check the license (Montana 143163, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Sarah Muller Ryersee
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 143163 MT
Self-reported in NPPES; status is on the state search - Practice location
- 123 S 27TH St, Billings, MT 59101
- Phone
- (406) 247-3350
- Enumerated
- Apr 25, 2024
- Record last updated
- Jul 20, 2026
- Fax
- (406) 247-3389
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Also registered at 123 S 27TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Doug AndersenSocial Worker1619392321
- Rachel AndersonRegistered Dietitian1174847099
- Tammi Anderson, LCPC, LACMental Health Counselor1083956783
Verify Sarah Muller Ryersee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 143163Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
45 Medicare Part D claims for 17 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Sarah Muller Ryersee among 775 family medicine physician records in Montana
Sarah Muller Ryersee, DO 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 2024, is newer than over 99% of them.
- NPI issued2024 · over 99% of these records are older, under 1% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2026 · 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.
All 775 in Montana → Every provider in Billings → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Dale Agner, M.D.Billings, MT 591011861486490
- Bryn Burnham, D.O.Billings, MT 591011164476693
- Emily Colson, MDBillings, MT 591011952397929
- Diana Doll, MDBillings, MT 591011942263405
- Roxanne Fahrenwald, MDBillings, MT 591011104810688
- Paolo Gerbasi, MDBillings, MT 591011134166622
- James Guyer, M.D.Billings, MT 591011962495697
- Thomas James, MDBillings, MT 591011831183482
Common questions
What is Sarah Muller Ryersee, DO's NPI number?
Sarah Muller Ryersee, DO's National Provider Identifier (NPI) is 1184470759, issued on Apr 25, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Sarah Muller Ryersee, DO located?
The NPPES record lists a practice address at 123 S 27TH St, Billings, MT, 59101. Phone: (406) 247-3350. Providers update this record themselves, so call before visiting.
How can I verify Sarah Muller Ryersee, DO's license?
NPPES lists Montana license number 143163, 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 Sarah Muller Ryersee, DO prescribe under Medicare Part D?
In 2024, Sarah Muller Ryersee, DO had 45 Medicare Part D claims for 17 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.