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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

YELLOWSTONE CITY-COUNTY HEALTH DEPARTMENT
NPI 1013061183
Public Health or Welfare in Billings, MT

Active since January 23, 2007
123 S 27TH ST, BILLINGS, MT 59101(406) 247-3200 Get Directions Write a Review

NPPES record last updated: October 6, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 6, 2026, Jan 27, 2022 (2 updates tracked since 2022).

About Yellowstone City-county Health Department NPPES

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

YELLOWSTONE CITY-COUNTY HEALTH DEPARTMENT (NPI 1013061183), doing business as Riverstone Health (roster Billing), is a healthcare organization registered as a public health or welfare in Billings, Montana and active in the NPI registry since January 2007. The organization lists Shanna Zier, Cfo, as its authorized official.

NPPES Registry Identity

NPI1013061183
Entity TypeOrganization
Primary Taxonomy251K00000X
Legal Business NameYELLOWSTONE CITY-COUNTY HEALTH DEPARTMENT
Location Address123 S 27TH STBillings, MT 59101-4200
Mailing Address123 S 27th StBillings, MT 59101-4200 · (406) 247-3200
Phone(406) 247-3200
Organization SubpartNo
Authorized OfficialShanna ZierCfo · (406) 247-3200
Enumeration DateJanuary 23, 2007
Last NPPES UpdateOctober 6, 20262 updates tracked since enumeration
NPPES CertifiedOctober 6, 2026
✔ NPI 1013061183 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPublic Health or WelfareAgencies
Taxonomy Code251K00000X
123 S 27TH ST, Billings, MT 59101
Open in Google Maps ↗

Other Names 1

Doing Business AsRiverstone Health (roster Billing)

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.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and revalidation status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

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

Medicare Revalidation Due Date

Revalidation due by November 30, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateMontanaEnrollment IDO20080911000630Non-DME Part B · Mass Immunization (Roster Biller Only)Due dateNovember 30, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
418 services416 patients
Influenza vaccine split virus, preservative free 90662
The Influenza Vaccine Split Virus, preservative-free, is a flu shot to protect against the influenza virus. It is made from parts of inactivated flu viruses and doesn't contain preservatives, reducing potential side effects. It helps your body develop immunity to the flu.
399 services397 patients

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KARMEN HAMMERMEISTER RN
Registered Nurse
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3382
DR. JENNIFER AKIKO VINNOLA DRPH, MS, RD
Dietitian, Registered
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3350
SAMANTHA MILLER RN
Registered Nurse
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3350
PAMELA WETSTEIN RN
Registered Nurse
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3220
SHAE ELIZABETH SAUNDERS MD
Family Medicine
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3350
ASHLEY DAWN MARIE BAUMEISTER
Registered Nurse (Case Management)
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3360
MEGAN B LITTLEFIELD M.D.
Internal Medicine
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3350
KARLA IRENE MASLOWSKI LAC
Counselor (Addiction (Substance Use Disorder))
123 S 27TH ST
BILLINGS, MT 59101
Yellowstone County (406) 247-3350

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 Department's NPI number?

The NPI number for Yellowstone City-County Health Department is 1013061183. It was assigned to this organization in the NPPES registry on January 23, 2007. The provider is doing business as RiverStone Health (Roster Billing).

Where is Yellowstone City-County Health Department located?

Yellowstone City-County Health Department is located at 123 S 27th St, Billings, MT 59101. The listed phone number is (406) 247-3200.

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

The primary specialty registered for this NPI is Public Health or Welfare with taxonomy code 251K00000X.

Is Yellowstone City-County Health Department enrolled in Medicare?

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

When is Yellowstone City-County Health Department's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Montana, Mass Immunization (Roster Biller Only)) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

What insurance does Yellowstone City-County Health Department accept?

Health plans from Blue Cross and Blue Shield of Montana and PacificSource Health Plans list Yellowstone City-County Health Department 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 Department was last updated on October 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days 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.