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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MARK HENNESSEY
NPI 1447168000
Counselor - School in San Jose, CA

Active since September 01, 2026
617 N JACKSON AVE, SAN JOSE, CA 95133(408) 928-9563 Get Directions Write a Review

NPPES record added: September 1, 2026. Verified against the NPPES registry weekly; last sync: September 06, 2026.

About Mark Hennessey NPPES

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

MARK HENNESSEY (NPI 1447168000) is an individual school provider in San Jose, California, licensed in California (260146902) and active in the NPI registry since September 2026.

NPPES Registry Identity

NPI1447168000
Entity TypeIndividualMale
Primary Taxonomy101YS0200X
Provider Legal NameMARK HENNESSEY
Location Address617 N JACKSON AVESan Jose, CA 95133-2398
Mailing Address617 N Jackson AveSan Jose, CA 95133-2398 · (408) 928-9563
Phone(408) 928-9563
Sole ProprietorNo
Enumeration DateSeptember 1, 2026
NPPES CertifiedSeptember 1, 2026
✔ NPI 1447168000 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · SchoolBehavioral Health & Social Service Providers
Taxonomy Code101YS0200X
License✔ Licensed in CA · 260146902
617 N JACKSON AVE, San Jose, CA 95133
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Other Providers at the Same Location NPPES 6

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

MS. STEPHANIE MACIEL GONZALEZ
Social Worker (School)
617 N JACKSON AVE
SAN JOSE, CA 95133
Santa Clara County (408) 928-2620
GARDNER FAMILY HEALTH NETWORK INC
Community/Behavioral Health
617 N JACKSON AVE
SAN JOSE, CA 95133
Santa Clara County (408) 938-2112
TIMOTHY MONROE GALE
Social Worker (School)
617 N JACKSON AVE
SAN JOSE, CA 95133
Santa Clara County (408) 928-9582
FLOR FERNANDEZ PPSC
Counselor (School)
617 N JACKSON AVE
SAN JOSE, CA 95133
Santa Clara County (408) 928-9574
MS. THANH THUY HUYNH
Counselor (School)
617 N JACKSON AVE
SAN JOSE, CA 95133
Santa Clara County (408) 928-9567
ERIN SILVERMAN
Health and Wellness Coach
617 N JACKSON AVE
SAN JOSE, CA 95133
Santa Clara County (408) 347-5336

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 Hennessey's NPI number?

The NPI number for Mark Hennessey is 1447168000. It was assigned to this individual provider in the NPPES registry on September 1, 2026.

Where is Mark Hennessey located?

Mark Hennessey practices at 617 N Jackson Ave, San Jose, CA 95133. The listed phone number is (408) 928-9563.

What is Mark Hennessey's specialty?

The primary specialty registered for this NPI is Counselor, specializing in School, with taxonomy code 101YS0200X.

When was this NPI record last updated?

The NPPES record for Mark Hennessey was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days 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.