Naomi Routen
Physician Assistant · Billings, MT
Naomi Routen is a physician assistant with a practice address in Billings, Montana, and NPI 1902293822, issued on Apr 17, 2015. Check the license (Montana 42910, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Naomi Routen
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- 42910 MT
Self-reported in NPPES; status is on the state search - Practice location
- 820 Division St, Billings, MT 59101
- Phone
- (406) 294-5225
- Enumerated
- Apr 17, 2015
- Record last updated
- Mar 12, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20151027002880); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 698 in Montana → Look up another NPI →
Also registered at 820 Division St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claire Mastel, PA-CPhysician Assistant1871178202
- Troy Stiles, D.O.Psychiatry Physician1437122207
Verify Naomi Routen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 42910Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average physician assistant in 2024
1,753 Medicare Part D claims for 84 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Clonazepam123 claims
- Aripiprazole84 claims
- Fluoxetine Hcl74 claims
- Buspirone Hcl64 claims
- Lorazepam64 claims
- Duloxetine Hcl62 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
- Big Sky Psychiatric Services PCBillings, MT
- Frontier Psychiatry PLLCBillings, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Naomi Routen among 698 physician assistant records in Montana
Naomi Routen 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 2015, is newer than 51% of them.
- NPI issued2015 · 51% of these records are older, 44% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2015 · median 2016 among the 514 with a school on file
- Record last updated2017 · 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).
170 physician assistant records list a practice address in Billings
They are 170 of the 4,035 NPPES records with a practice address in Billings, and 698 physician assistant records in Montana.
All 698 in Montana → Every provider in Billings → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Susan Cerovski, PABillings, MT 591011891771622
- Linda Dupree, PACBillings, MT 591011073516167
- John Etchart, PA-CBillings, MT 591011124010830
- Kathryn Hall, PA-CBillings, MT 591011366438285
- Myrna Mentikov, PA-CBillings, MT 591011750377735
- Lisa Murray, PA-CBillings, MT 591011821084369
- Deanna Niles, PA-CBillings, MT 591011881666261
- Mark Pierson, PA-CBillings, MT 591011508858234
Common questions
What is Naomi Routen's NPI number?
Naomi Routen's National Provider Identifier (NPI) is 1902293822, issued on Apr 17, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Naomi Routen located?
The NPPES record lists a practice address at 820 Division St, Billings, MT, 59101. Phone: (406) 294-5225. Providers update this record themselves, so call before visiting.
How can I verify Naomi Routen's license?
NPPES lists Montana license number 42910, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Naomi Routen prescribe under Medicare Part D?
In 2024, Naomi Routen had 1,753 Medicare Part D claims for 84 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.