What is Mark Hammann's NPI number?

Mark Hammann's National Provider Identifier (NPI) is 1255281291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Hammann's specialty?

Mark Hammann is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).

Where is Mark Hammann located?

Mark Hammann's practice location on file with NPPES is 2913 E 22nd St, Tucson, AZ 85713-2001.

What is Mark Hammann's phone number?

The practice phone number listed in the NPPES registry for Mark Hammann is (520) 303-1697.

Is Mark Hammann's NPI active?

Yes — Mark Hammann's NPI (1255281291) is active in the NPPES registry as of the last update on 2026-01-30.

IndividualActive

Mark Hammann

NPI 1255281291 · Counselor · Tucson, AZ

Mark Hammann is a Counselor provider in Tucson, AZ (NPI 1255281291).

Provider details

NPI number: 1255281291
Entity type: Individual
Primary specialty: CounselorBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No
License: LAC-08387T (AZ)

Specialties & taxonomies

CounselorPrimary101Y00000XLicense LAC-08387T (AZ)
Behavioral Health & Social Service Providers

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

2913 E 22nd St

Tucson, AZ 85713-2001

Phone: (520) 303-1697

Street-level locationGet directions

More AZ providers

Mailing address