Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mr. John Jack Shields Cousineau, LMFT

Individual provider Marriage & Family Therapist · NPI 1548570583

Mr. John Jack Shields Cousineau, LMFT is a Marriage and Family Therapist in Martinez, California. Qualified in 2010, 16 years ago. Practices as a sole proprietor, works from 3 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
16
Licensed in
CA
In the registry since
2010
Specialties on file
2
What do these letters mean?
LMFT — Licensed Marriage and Family Therapist
A therapist licensed to treat couples and families.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1340 Arnold Dr Ste 200
Martinez, CA 94553-4189
Phone: (510) 809-7350
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 1425 Oregon St Apt K4, Berkeley, CA 94702-2547 — (510) 809-7350
  • 595 Center Ave Ste 100, Martinez, CA 94553-4629 — (510) 809-7350

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence LMFT90191 (CA)
Marriage & Family Therapist Taxonomy 106H00000X · Licence 90191 (CA)

Record details

NPI number1548570583
Entity typeIndividual (Type 1)
GenderMale
Credentials LMFT
Sole proprietorYes
NPI enumeratedOctober 8, 2010
Last updated in NPPESFebruary 5, 2025
Certification dateFebruary 5, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMARRIAGE AND FAMILY THERAPIST
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Martinez