FRONTIER PSYCHIATRY, PLLC
NPI 1508493156
Psychiatry & Neurology - Psychiatry in Billings, MT

Active since March 24, 2020
1601 LEWIS AVE STE 102, BILLINGS, MT 59102(406) 284-8814 Get Directions Write a Review

NPPES record last updated: March 29, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 16, 2021, Mar 24, 2020 (2 updates tracked since 2020).

About Frontier Psychiatry, Pllc NPPES

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

FRONTIER PSYCHIATRY, PLLC (NPI 1508493156), doing business as Avicenna, Pllc, is a healthcare organization registered as a psychiatry in Billings, Montana and active in the NPI registry since March 2020. The organization maintains 2 additional practice locations and lists Reza Hosseini Ghomi, Coo, as its authorized official.

NPPES Registry Identity

NPI1508493156
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameFRONTIER PSYCHIATRY, PLLC
Location Address1601 LEWIS AVE STE 102Billings, MT 59102-4182
Mailing Address1601 Lewis Ave Ste 102Billings, MT 59102-4182 · (406) 200-8471 · Fax (833) 465-3766
Organization SubpartNo
Authorized OfficialReza Hosseini GhomiCoo · (406) 200-8471
Enumeration DateMarch 24, 2020
Last NPPES UpdateMarch 29, 20242 updates tracked since enumeration
NPPES CertifiedMarch 29, 2024
✔ NPI 1508493156 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1601 LEWIS AVE STE 102, Billings, MT 59102

Other Names 1

Former Legal Business NameAvicenna, Pllc

Secondary Practice Locations 2

Location 1721 Depot DrAnchorage, AK 99501-1615 · Phone (406) 200-8471
Location 23597 E Monarch Sky Ln Ste 240Meridian, ID 83646-1055 · Phone (406) 200-8471 · Fax (833) 465-3766

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted 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)

Frontier Psychiatry, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

33

Medicare enrollment records show 33 clinicians reassign Medicare billing to Frontier Psychiatry, PLLC, which bills Medicare for the services they deliver. Of these, 4 practice at this address and 10 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 5

Psychiatry14
Nurse Practitioner8
Mental Health Counselor6
Clinical Social Worker4
Internal Medicine1

Nearest to this location (20)

See all 33
Nurse Practitioner
NPI 1033643713
1601 LEWIS AVE STE 102
Billings, MT 59102
(206) 200-8471
✔ PECOS✔ Accepts MedicareSame address
Psychiatry
NPI 1841871753
1601 LEWIS AVE STE 102
Billings, MT 59102
(406) 200-8471
✔ PECOS✔ Accepts MedicareSame address
Psychiatry
NPI 1659791770
1601 LEWIS AVE STE 102
Billings, MT 59102
(406) 272-6453
✔ PECOS✔ Accepts MedicareSame address
Clinical Social Worker
NPI 1275370140
1601 LEWIS AVE STE 102
Billings, MT 59102
(406) 200-8471
✔ PECOS✔ Accepts MedicareSame address
Psychiatry
NPI 1770738353
1020 N 27TH ST
Billings, MT 59101
(406) 238-2500
✔ PECOS✔ Accepts Medicare2.2 mi
Psychiatry
NPI 1164734679
27 N 27TH ST UNIT 21-C
Billings, MT 59101
(702) 790-2701
✔ PECOS✔ Accepts Medicare2.6 mi
Nurse Practitioner
NPI 1184325524
27 N 27TH ST STE 21E
Billings, MT 59101
(406) 200-8471
✔ PECOS✔ Accepts Medicare2.6 mi
Psychiatry
NPI 1801349410
27 N 27TH ST STE 21E
Billings, MT 59101
(406) 200-8471
✔ PECOS✔ Accepts Medicare2.6 mi
Mental Health Counselor
NPI 1174131304
27 N 27TH ST STE 21C
Billings, MT 59101
(406) 200-8471
✔ PECOS✔ Accepts Medicare2.6 mi
Nurse Practitioner
NPI 1194795351
27 N 27TH ST UNIT 21-C
Billings, MT 59101
(406) 200-8471
✔ PECOS2.6 mi
Mental Health Counselor
NPI 1710755525
202 E LEWIS ST
Livingston, MT 59047
(406) 580-2189
✔ PECOS✔ Accepts Medicare97 mi
Mental Health Counselor
NPI 1437868189
112 W LEWIS ST
Livingston, MT 59047
(406) 222-1111
✔ PECOS97 mi
Psychiatry
NPI 1033586730
937 HIGHLAND BLVD STE 5410
Bozeman, MT 59715
(406) 414-2400
✔ PECOS✔ Accepts Medicare119 mi
Mental Health Counselor
NPI 1306432786
2765 WYLIE DR TRLR 80
East Helena, MT 59635
(406) 924-9211
✔ PECOS172 mi
Clinical Social Worker
NPI 1083488837
2755 COLONIAL DR
Helena, MT 59601
(406) 444-7500
✔ PECOS174 mi
Clinical Social Worker
NPI 1497308571
941 AVENUE E NW
Great Falls, MT 59404
(406) 491-7771
✔ PECOS✔ Accepts Medicare178 mi
Mental Health Counselor
NPI 1376155432
8 W PARK ST STE 303C
Butte, MT 59701
(406) 498-3305
✔ PECOS192 mi
Psychiatry
NPI 1790138121
160 HERITAGE WAY STE 102
Kalispell, MT 59901
(406) 758-3244
✔ PECOS✔ Accepts Medicare320 mi
Nurse Practitioner
NPI 1336451947
2199 W IRONWOOD CENTER DR
Coeur D Alene, ID 83814
(208) 625-4888
✔ PECOS✔ Accepts Medicare413 mi
Internal Medicine
NPI 1225457641
420 S 5TH AVE
West Reading, PA 19611
(484) 628-5858
✔ PECOS✔ Accepts Medicare1,681 mi
See all 33 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 Frontier Psychiatry, PLLC's NPI number?

The NPI number for Frontier Psychiatry, PLLC is 1508493156. It was assigned to this organization in the NPPES registry on March 24, 2020. The provider was formerly known as Avicenna, PLLC.

Where is Frontier Psychiatry, PLLC located?

Frontier Psychiatry, PLLC is located at 1601 Lewis Ave Ste 102, Billings, MT 59102. The listed phone number is (406) 284-8814.

What is Frontier Psychiatry, PLLC's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Frontier Psychiatry, PLLC enrolled in Medicare?

Yes. Frontier Psychiatry, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Frontier Psychiatry, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 33 clinicians in 5 Medicare specialties reassign their Medicare billing to Frontier Psychiatry, PLLC. 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 Psychiatry (14), Nurse Practitioner (8) and Mental Health Counselor (6). Of these, 4 practice at this address and 10 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Frontier Psychiatry, PLLC accept?

Health plans from Blue Cross and Blue Shield of Montana, Moda Health Plan, Inc. and Mountain Health CO-OP list Frontier Psychiatry, PLLC 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 Frontier Psychiatry, PLLC was last updated on March 29, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.