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YELLOWSTONE CITY-COUNTY HEALTH DEPT
NPI 1841219698
Clinic/Center - Federally Qualified Health Center (FQHC) in Billings, MT

Active since July 19, 2006
123 S 27TH ST, BILLINGS, MT 59101(406) 247-3350(406) 247-3389 Get Directions Write a Review

NPPES record last updated: May 18, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: May 18, 2026, Jan 27, 2022, Oct 18, 2017 (3 updates tracked since 2017).

About Yellowstone City-county Health Dept NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

YELLOWSTONE CITY-COUNTY HEALTH DEPT (NPI 1841219698), doing business as Riverstone Health, is a healthcare organization registered as a federally qualified health center (fqhc) in Billings, Montana and active in the NPI registry since July 2006. The organization lists Shanna Zier, Chief Financial Officer, as its authorized official.

NPPES Registry Identity

NPI1841219698
Entity TypeOrganization
Primary Taxonomy261QF0400X
Legal Business NameYELLOWSTONE CITY-COUNTY HEALTH DEPT
Location Address123 S 27TH STBillings, MT 59101-4227
Mailing Address123 S 27th StBillings, MT 59101-4200 · (406) 247-3350
Phone(406) 247-3350
Fax(406) 247-3389
Organization SubpartNo
Authorized OfficialShanna ZierChief Financial Officer · (406) 247-3200
Enumeration DateJuly 19, 2006
Last NPPES UpdateMay 18, 20263 updates tracked since enumeration
NPPES CertifiedMay 18, 2026
✔ NPI 1841219698 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Federally Qualified Health Center (FQHC)Ambulatory Health Care Facilities
Taxonomy Code261QF0400X
123 S 27TH ST, Billings, MT 59101
Open in Google Maps ↗

Other Names 1

Doing Business AsRiverstone Health

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana, PacificSource Health Plans, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Yellowstone City-county Health Dept is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

42

Medicare enrollment records show 42 clinicians reassign Medicare billing to Yellowstone City-County Health Dept, which bills Medicare for the services they deliver. Of these, 7 practice at this address and 39 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 7

Family Practice23
Clinical Social Worker6
Mental Health Counselor4
Nurse Practitioner4
Infectious Disease2
Internal Medicine2
Psychiatry1

Nearest to this location (20)

See all 42
Rhianna Curtiss, LCSW
Clinical Social Worker
NPI 1326759630
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts MedicareSame address
Thomas James, MD
Family Practice
NPI 1831183482
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts MedicareSame address
Dawn Leslie, LAC
Clinical Social Worker
NPI 1972978898
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts MedicareSame address
Jamie Spencer, LAC, LCSW
Clinical Social Worker
NPI 1164829917
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts MedicareSame address
Eliana Stoppel, MD
Family Practice
NPI 1205576782
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts MedicareSame address
Alyssa Wiebe, LCPC
Mental Health Counselor
NPI 1598573818
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOSSame address
Katherine Keith, FNP
Nurse Practitioner
NPI 1467111773
123 S 27TH ST
Billings, MT 59101
(406) 651-6558
✔ PECOS✔ Accepts MedicareSame address
Paolo Gerbasi, MD
Family Practice
NPI 1134166622
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.2 mi
Megan Littlefield, M.D.
Internal Medicine
NPI 1013964287
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.3 mi
Garth Brand, MD
Family Practice
NPI 1891051645
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.3 mi
Roxanne Fahrenwald, MD
Family Practice
NPI 1104810688
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.3 mi
Emily Aerts
Clinical Social Worker
NPI 1154894186
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.3 mi
Kate Hildner, FNP-C
Nurse Practitioner
NPI 1568168524
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.3 mi
Sandi Karr, LCPC, LAC
Mental Health Counselor
NPI 1134335094
123 S 27TH ST
Billings, MT 59101
(406) 651-6552
✔ PECOS✔ Accepts Medicare0.3 mi
Krystal Kuka, LCPC
Mental Health Counselor
NPI 1518332238
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS0.3 mi
Leigh Slagsvold, DNP, APRN, FNP-C
Nurse Practitioner
NPI 1326679291
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.3 mi
Julie Kelso, MD
Psychiatry
NPI 1427101856
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS✔ Accepts Medicare0.3 mi
Tiffany Kent
Clinical Social Worker
NPI 1871075762
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS0.3 mi
Staci Lee, MD
Infectious Disease
NPI 1902009715
801 N 29TH ST
Billings, MT 59101
(406) 238-2500
✔ PECOS✔ Accepts Medicare0.5 mi
Martin Prager Sanchez, M.D
Infectious Disease
NPI 1851624514
801 N 29TH ST
Billings, MT 59101
(406) 238-2500
✔ PECOS✔ Accepts Medicare0.5 mi
See all 42 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Yellowstone City-County Health Dept's NPI number?

The NPI number for Yellowstone City-County Health Dept is 1841219698. It was assigned to this organization in the NPPES registry on July 19, 2006. The provider is doing business as RiverStone Health.

Where is Yellowstone City-County Health Dept located?

Yellowstone City-County Health Dept is located at 123 S 27th St, Billings, MT 59101. The listed phone number is (406) 247-3350.

What is Yellowstone City-County Health Dept's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Federally Qualified Health Center (FQHC), with taxonomy code 261QF0400X.

Is Yellowstone City-County Health Dept enrolled in Medicare?

Yes. Yellowstone City-County Health Dept is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Yellowstone City-County Health Dept?

According to the CMS Revalidation Reassignment List (October 2026 release), 42 clinicians in 7 Medicare specialties reassign their Medicare billing to Yellowstone City-County Health Dept. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Family Practice (23), Clinical Social Worker (6) and Mental Health Counselor (4). Of these, 7 practice at this address and 39 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Yellowstone City-County Health Dept accept?

Health plans from Blue Cross and Blue Shield of Montana, PacificSource Health Plans and UnitedHealthcare list Yellowstone City-County Health Dept as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Yellowstone City-County Health Dept was last updated on May 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.