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

BIGHORN VALLEY HEALTH CENTER INCORPORATED
NPI 1942450432
Clinic/Center - Federally Qualified Health Center (FQHC) in Lewistown, MT

Active since September 22, 2008
311 W MAIN ST STE 5, LEWISTOWN, MT 59457(406) 535-6545(855) 699-6806 Get Directions Write a Review

NPPES record last updated: October 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 13, 2026, Oct 6, 2026, Nov 16, 2022 and 1 more (4 updates tracked since 2018).

About Bighorn Valley Health Center Incorporated NPPES

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

BIGHORN VALLEY HEALTH CENTER INCORPORATED (NPI 1942450432), doing business as One Health - Lewistown, is a healthcare organization registered as a federally qualified health center (fqhc) in Lewistown, Montana and active in the NPI registry since September 2008. The organization lists David Andrew Mark, Ceo, as its authorized official.

NPPES Registry Identity

NPI1942450432
Entity TypeOrganization
Primary Taxonomy261QF0400X
Legal Business NameBIGHORN VALLEY HEALTH CENTER INCORPORATED
Location Address311 W MAIN ST STE 5Lewistown, MT 59457-2760
Mailing Address207 W Main St Ste 5Lewistown, MT 59457-2718 · (406) 535-6545
Fax(855) 699-6806
Organization SubpartNo
Authorized OfficialDavid Andrew MarkCeo · (406) 665-4103
Enumeration DateSeptember 22, 2008
Last NPPES UpdateOctober 13, 20264 updates tracked since enumeration
NPPES CertifiedOctober 13, 2026
✔ NPI 1942450432 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyClinic/Center · Federally Qualified Health Center (FQHC)Ambulatory Health Care Facilities
Taxonomy Code261QF0400X
311 W MAIN ST STE 5, Lewistown, MT 59457

Other Names 1

Doing Business AsOne Health - Lewistown

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Bighorn Valley Health Center Incorporated is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by January 31, 2027

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 IDO20090204000538Non-DME Part B · Clinic/Group PracticeDue dateJanuary 31, 2027
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

87

Medicare enrollment records show 87 clinicians reassign Medicare billing to Bighorn Valley Health Center Incorporated, which bills Medicare for the services they deliver. Of these, 5 practice at this address and 9 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 8

Nurse Practitioner33
Mental Health Counselor21
Clinical Social Worker15
Family Practice11
Emergency Medicine2
General Practice2
Internal Medicine2
Osteopathic Manipulative Medicine1

Nearest to this location (20)

See all 87
Family Practice
NPI 1902127756
311 W MAIN ST
Lewistown, MT 59457
(406) 535-6545
✔ PECOS✔ Accepts MedicareSame address
Nurse Practitioner
NPI 1235818535
311 W MAIN ST
Lewistown, MT 59457
(406) 535-6545
✔ PECOS✔ Accepts MedicareSame address
Mental Health Counselor
NPI 1073339297
311 W MAIN ST
Lewistown, MT 59457
(406) 535-6545
✔ PECOS✔ Accepts MedicareSame address
Mental Health Counselor
NPI 1366130908
311 W MAIN ST
Lewistown, MT 59457
(406) 535-6545
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1952857385
311 W MAIN ST
Lewistown, MT 59457
(406) 535-6545
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1336324250
800 CASINO CREEK DR
Lewistown, MT 59457
(406) 444-3416
✔ PECOS✔ Accepts Medicare0.6 mi
Nurse Practitioner
NPI 1578872909
1422 W MAIN ST
Lewistown, MT 59457
(406) 771-6230
✔ PECOS✔ Accepts Medicare0.8 mi
Emergency Medicine
NPI 1447251392
310 WENDELL AVE SUITE 103
Lewistown, MT 59457
(406) 535-1480
✔ PECOS0.9 mi
Internal Medicine
NPI 1467403345
408 WENDELL AVE
Lewistown, MT 59457
(406) 535-1502
✔ PECOS1.0 mi
Mental Health Counselor
NPI 1215627633
1939 BEVERLY HILL BLVD
Billings, MT 59102
(406) 671-4295
✔ PECOS97 mi
Family Practice
NPI 1578557120
123 S 27TH ST
Billings, MT 59101
(406) 247-3350
✔ PECOS99 mi
General Practice
NPI 1134122872
419 PENNSYLVANIA P.O. 309
Chinook, MT 59523
(406) 357-2294
✔ PECOS106 mi
Nurse Practitioner
NPI 1831664242
419 PENNSYLVANIA ST
Chinook, MT 59523
(406) 357-2294
✔ PECOS✔ Accepts Medicare106 mi
Nurse Practitioner
NPI 1386360295
419 PENNSYLVANIA ST
Chinook, MT 59523
(406) 357-2294
✔ PECOS✔ Accepts Medicare106 mi
Clinical Social Worker
NPI 1679342166
419 PENNSYLVANIA ST
Chinook, MT 59523
(406) 357-2294
✔ PECOS✔ Accepts Medicare106 mi
Mental Health Counselor
NPI 1427615574
419 PENNSYLVANIA ST
Chinook, MT 59523
(406) 357-2294
✔ PECOS✔ Accepts Medicare106 mi
Family Practice
NPI 1609800788
112 W LEWIS ST
Livingston, MT 59047
(406) 222-1111
✔ PECOS111 mi
Emergency Medicine
NPI 1073652061
19 E MAIN ST
Belgrade, MT 59714
(406) 924-5754
✔ PECOS122 mi
Osteopathic Manipulative Medicine
NPI 1083102255
206 ALASKA FRONTAGE RD
Belgrade, MT 59714
(406) 414-3334
✔ PECOS✔ Accepts Medicare123 mi
Internal Medicine
NPI 1023166840
402 N CENTER AVE
Hardin, MT 59034
(406) 655-4103
✔ PECOS127 mi
See all 87 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 Bighorn Valley Health Center Incorporated's NPI number?

The NPI number for Bighorn Valley Health Center Incorporated is 1942450432. It was assigned to this organization in the NPPES registry on September 22, 2008. The provider is doing business as One Health - Lewistown.

Where is Bighorn Valley Health Center Incorporated located?

Bighorn Valley Health Center Incorporated is located at 311 W Main St Ste 5, Lewistown, MT 59457. The listed phone number is (406) 535-6545.

What is Bighorn Valley Health Center Incorporated's specialty?

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

Is Bighorn Valley Health Center Incorporated enrolled in Medicare?

Yes. Bighorn Valley Health Center Incorporated is registered in the Medicare PECOS enrollment system.

When is Bighorn Valley Health Center Incorporated'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, Clinic/Group Practice) is due for revalidation by January 31, 2027. 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.

How many clinicians bill Medicare through Bighorn Valley Health Center Incorporated?

According to the CMS Revalidation Reassignment List (October 2026 release), 87 clinicians in 8 Medicare specialties reassign their Medicare billing to Bighorn Valley Health Center Incorporated. 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 Nurse Practitioner (33), Mental Health Counselor (21) and Clinical Social Worker (15). Of these, 5 practice at this address and 9 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Bighorn Valley Health Center Incorporated accept?

Health plans from Blue Cross and Blue Shield of Montana and Mountain Health CO-OP list Bighorn Valley Health Center Incorporated 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 Bighorn Valley Health Center Incorporated was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.