Mark Montgomery, LPC, LISAC
NPI 1851478564 · Addiction (Substance Use Disorder) Counselor · Mesa, AZ
Mark Montgomery, LPC, LISAC is a Addiction (Substance Use Disorder) Counselor provider in Mesa, AZ (NPI 1851478564).
Provider details
- NPI number
- 1851478564
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- LPC, LISAC
- Sex
- Male
- Sole proprietor
- No
- License
- LISAC-1677 (AZ)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2025-09-11
Frequently asked questions
- What is Mark Montgomery's NPI number?
- Mark Montgomery's National Provider Identifier (NPI) is 1851478564, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Montgomery's specialty?
- Mark Montgomery is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Montgomery located?
- Mark Montgomery's practice location on file with NPPES is 4554 E. Inverness Ave., C-108, Mesa, AZ 85206-4639.
- What is Mark Montgomery's phone number?
- The practice phone number listed in the NPPES registry for Mark Montgomery is (480) 330-5031.
- Is Mark Montgomery's NPI active?
- Yes — Mark Montgomery's NPI (1851478564) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.