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ABBIGAIL MELLUM B.S, LAC
NPI 1780042804
Counselor - Addiction (Substance Use Disorder) in Billings, MT

Active since February 03, 2016
208 N BROADWAY, BILLINGS, MT 59101(406) 794-2003 Get Directions Write a Review

NPPES record last updated: April 22, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Abbigail Mellum B.s, Lac NPPES

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

ABBIGAIL MELLUM B.S, LAC (NPI 1780042804) is an individual addiction (substance use disorder) provider in Billings, Montana, licensed in Montana (BBH-LAC-LIC-16223) and active in the NPI registry since February 2016.

NPPES Registry Identity

NPI1780042804
Entity TypeIndividualFemale
Primary Taxonomy101YA0400X
Provider Legal NameABBIGAIL MELLUMCredential: B.S, LAC
Location Address208 N BROADWAYBillings, MT 59101-3988
Mailing AddressPo Box 82Park City, MT 59063-0082 · (406) 794-2003
Phone(406) 794-2003
Sole ProprietorYes
Enumeration DateFebruary 3, 2016
Last NPPES UpdateApril 22, 2025
NPPES CertifiedApril 22, 2025
✔ NPI 1780042804 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers
Taxonomy Code101YA0400X
License✔ Licensed in MT · BBH-LAC-LIC-16223
208 N BROADWAY, Billings, MT 59101
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Mountain Health CO-OP.Insurance ›

Other Providers at the Same Location NPPES 5

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

THERESA M BLAZEK LCPC
Counselor
208 N BROADWAY, STE 423 YELLOWSTONE COUNSELING CENTER
BILLINGS, MT 59101
Yellowstone County (406) 896-8427
SALLY G. GRUNST LCPC
Counselor
208 N BROADWAY, SUITE 423
BILLINGS, MT 59101
Yellowstone County (406) 896-8427
ELATION INC
Social Worker (Clinical)
208 N BROADWAY, STE 208
BILLINGS, MT 59101
Yellowstone County (406) 294-2400
ALAN COLLIER OSTBY LCPC PHD
Counselor
208 N BROADWAY, STE 423
BILLINGS, MT 59101
Yellowstone County (406) 896-8427
MS. KELLY L CHRISTY LCPC
Counselor
208 N BROADWAY, STE 423
BILLINGS, MT 59101
Yellowstone County (406) 896-8427

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 Abbigail Mellum's NPI number?

The NPI number for Abbigail Mellum is 1780042804. It was assigned to this individual provider in the NPPES registry on February 3, 2016.

Where is Abbigail Mellum located?

Abbigail Mellum practices at 208 N Broadway, Billings, MT 59101. The listed phone number is (406) 794-2003.

What is Abbigail Mellum's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

What insurance does Abbigail Mellum accept?

Health plans from Mountain Health CO-OP list Abbigail Mellum 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 Abbigail Mellum was last updated on April 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.