Mariah Kellam, RN
Family Nurse Practitioner · Chinook, MT
Mariah Kellam, RN is a family nurse practitioner with a practice address in Chinook, Montana, and NPI 1083230304, issued on Jun 23, 2020. Check the license (Montana NUR-APRN-LIC-216413, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mariah Kellam
- Credential
- RN
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- NUR-APRN-LIC-216413 MT
Self-reported in NPPES; status is on the state search - Practice location
- 419 Pennsylvania St, Chinook, MT 59523
- Phone
- (406) 357-2294
- Enumerated
- Jun 23, 2020
- Record last updated
- Dec 8, 2025
- Medicare enrollment
- Enrolled (PECOS I20230908001267); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 815 in Montana → Look up another NPI →
Also registered at 419 Pennsylvania St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Chaffin, DDSDentist1780025353
- Stephanie ChristmanFamily Nurse Practitioner1831664242
- Megan Faber, PAPhysician Assistant1790419224
- Kyla Krueger, NPFamily Nurse Practitioner1386360295
- Kasey Labuda, LCSWClinical Social Worker1679342166
- Larry Obie, ODOptometrist1285606426
Verify Mariah Kellam in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license NUR-APRN-LIC-216413Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average family nurse practitioner in 2024
1,673 Medicare Part D claims for 102 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 33 claims were for opioids.
Most prescribed
- Lisinopril97 claims
- Losartan Potassium83 claims
- Omeprazole79 claims
- Amlodipine Besylate74 claims
- Levothyroxine Sodium68 claims
- Simvastatin61 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
- Bighorn Valley Health Center IncorporatedChinook, MT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mariah Kellam among 815 family nurse practitioner records in Montana
Mariah Kellam, RN is one of 815 family nurse practitioner records with a practice address in Montana. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 65% of them.
- NPI issued2020 · 65% of these records are older, 29% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2023 · median 2018 among the 505 with a school on file
- Record last updated2025 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 family nurse practitioner records list a practice address in Chinook
They are 3 of the 27 NPPES records with a practice address in Chinook, and 815 family nurse practitioner records in Montana.
All 815 in Montana → Every provider in Chinook → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Stephanie ChristmanChinook, MT 595231831664242
- Kyla Krueger, NPChinook, MT 595231386360295
- Timothy Blair, APRNChester, MT 595221891101689
- Jacy Crowley, DNP, FNP-CBox Elder, MT 595211578729323
- Tammy Ralston, APRN-CBox Elder, MT 595211710960554
- Wendy Tilleman, APRN, FNP-BCBox Elder, MT 595211487829180
- Steven Arnold, NP-CBig Sandy, MT 595201750382933
- Jennifer Show, FNP-BCHarlem, MT 595261982144523
Common questions
What is Mariah Kellam, RN's NPI number?
Mariah Kellam, RN's National Provider Identifier (NPI) is 1083230304, issued on Jun 23, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Mariah Kellam, RN located?
The NPPES record lists a practice address at 419 Pennsylvania St, Chinook, MT, 59523. Phone: (406) 357-2294. Providers update this record themselves, so call before visiting.
How can I verify Mariah Kellam, RN's license?
NPPES lists Montana license number NUR-APRN-LIC-216413, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity only.
How much does Mariah Kellam, RN prescribe under Medicare Part D?
In 2024, Mariah Kellam, RN had 1,673 Medicare Part D claims for 102 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.