What is Mark Dennis's NPI number?

Mark Dennis's National Provider Identifier (NPI) is 1144118969, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Mark Dennis's specialty?

Mark Dennis is listed in the NPPES registry with a primary specialty of Peer Specialist (Other Service Providers).

Where is Mark Dennis located?

Mark Dennis's practice location on file with NPPES is 13095 Neptune Dr, San Leandro, CA 94577-3130.

What is Mark Dennis's phone number?

The practice phone number listed in the NPPES registry for Mark Dennis is (510) 300-3500.

Is Mark Dennis's NPI active?

Yes — Mark Dennis's NPI (1144118969) is active in the NPPES registry as of the last update on 2025-06-27.

IndividualActive

Mark Dennis

NPI 1144118969 · Peer Specialist · San Leandro, CA

Mark Dennis is a Peer Specialist provider in San Leandro, CA (NPI 1144118969).

Provider details

NPI number: 1144118969
Entity type: Individual
Primary specialty: Peer SpecialistOther Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Peer SpecialistPrimary175T00000X
Other Service Providers

Profile Score

Basic profile(48/100 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
83% 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

13095 Neptune Dr

San Leandro, CA 94577-3130

Phone: (510) 300-3500

Street-level locationGet directions

More CA providers

Mailing address