MR. MARK ALYN MONTGOMERY LPC, LISAC
NPI 1851478564
Counselor - Addiction (Substance Use Disorder) in Mesa, AZ

Q: What is Mark Montgomery's NPI number?

The NPI number for Mark Montgomery is 1851478564. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Q: What is Mark Montgomery's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Montgomery was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.

Active since November 01, 2006

4554 E. INVERNESS AVE., C-108, MESA, AZ 85206(480) 330-5031(480) 926-2326 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

On this page

About Mr. Mark Alyn Montgomery Lpc, Lisac NPPES

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

MR. MARK ALYN MONTGOMERY LPC, LISAC (NPI 1851478564) is an individual addiction (substance use disorder) provider in Mesa, Arizona, licensed in Arizona (LISAC-1677) and active in the NPI registry since November 2006.

NPPES Registry Identity

NPI1851478564

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameMR. MARK ALYN MONTGOMERYCredential: LPC, LISAC

Location Address4554 E. INVERNESS AVE., C-108Mesa, AZ 85206-4639

Mailing Address4554 E Inverness Ave # C-108Mesa, AZ 85206-4639 · (480) 330-5031 · Fax (480) 926-2326

Phone(480) 330-5031

Fax(480) 926-2326

Sole ProprietorNo

Enumeration DateNovember 1, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1851478564 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

License✔ Licensed in AZ · LISAC-1677

Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License LPC-2087 (AZ)

Other Identifiers 2

OtherLPC-2087AZ · Licensed Prof. Counselor

OtherLISAC-1677AZ · Lic. Ind. Sub. Abuse Coun

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 Mark Montgomery's NPI number?

The NPI number for Mark Montgomery is 1851478564. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Mark Montgomery located?

Mark Montgomery practices at 4554 E. Inverness Ave., C-108, Mesa, AZ 85206. The listed phone number is (480) 330-5031.

What is Mark Montgomery's specialty?

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

When was this NPI record last updated?

The NPPES record for Mark Montgomery was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.