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COUNTY OF LASSEN
NPI 1871648055
Counselor - Mental Health in Susanville, CA

Active since January 25, 2007
555 HOSPITAL LN, SUSANVILLE, CA 96130(530) 251-8131(530) 251-8070 Get Directions Write a Review

NPPES record last updated: December 22, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 22, 2025, Dec 10, 2025, May 30, 2025 and 1 more (4 updates tracked since 2018).

About County Of Lassen NPPES

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

COUNTY OF LASSEN (NPI 1871648055), doing business as Lassen County Behavioral Health, is a healthcare organization registered as a mental health in Susanville, California and active in the NPI registry since January 2007. The organization lists Tiffany Armstrong, Behavioral Health Director, as its authorized official.

NPPES Registry Identity

NPI1871648055
Entity TypeOrganization
Primary Taxonomy101YM0800X
Legal Business NameCOUNTY OF LASSEN
Location Address555 HOSPITAL LNSusanville, CA 96130-4808
Mailing Address555 Hospital LnSusanville, CA 96130-4808 · (530) 251-8108 · Fax (530) 251-8394
Phone(530) 251-8131
Fax(530) 251-8070
Organization SubpartNo
Authorized OfficialTiffany ArmstrongBehavioral Health Director · (530) 251-2627
Enumeration DateJanuary 25, 2007
Last NPPES UpdateDecember 22, 20254 updates tracked since enumeration
NPPES CertifiedDecember 22, 2025
✔ NPI 1871648055 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
555 HOSPITAL LN, Susanville, CA 96130
Open in Google Maps ↗

Other Names 1

Doing Business AsLassen County Behavioral Health

Other Identifiers 2

Medicaid1853CA
Medicaid1801CA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

County Of Lassen is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to County Of Lassen, which bills Medicare for the services they deliver. Of these, 2 practice at this address. They are listed nearest first.

Clinicians, nearest first (5)

Tiffany Armstrong, LCSW
Clinical Social Worker
NPI 1902940844
555 HOSPITAL LN
Susanville, CA 96130
(530) 251-2627
✔ PECOSSame address
Leslie Goni
Clinical Social Worker
NPI 1851881635
555 HOSPITAL LN
Susanville, CA 96130
(530) 251-8108
✔ PECOSSame address
Clara Jeronimo
Clinical Social Worker
NPI 1225511884
7200 BANCROFT AVE STE 267
Oakland, CA 94605
(510) 899-7445
✔ PECOS199 mi
Cherilyn Haworth, LCSW, PSY.D.
Clinical Social Worker
NPI 1346456142
2100 E ST
Bakersfield, CA 93301
(661) 327-4252
✔ PECOS358 mi
Breana Martin, LMFT
Marriage and Family Therapist
NPI 1962048082
3924 BERNESE DR
Mckinney, TX 75071
(530) 616-1036
✔ PECOS1,413 mi

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 County Of Lassen's NPI number?

The NPI number for County Of Lassen is 1871648055. It was assigned to this organization in the NPPES registry on January 25, 2007. The provider is doing business as Lassen County Behavioral Health.

Where is County Of Lassen located?

County Of Lassen is located at 555 Hospital Ln, Susanville, CA 96130. The listed phone number is (530) 251-8131.

What is County Of Lassen's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is County Of Lassen enrolled in Medicare?

Yes. County Of Lassen is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through County Of Lassen?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 2 Medicare specialties reassign their Medicare billing to County Of Lassen. 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 Clinical Social Worker (4) and Marriage and Family Therapist (1). Of these, 2 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for County Of Lassen was last updated on December 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.