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

MS. Mary Hannah Hess

Individual provider Marriage & Family Therapist · NPI 1346515566

MS. Mary Hannah Hess is a Marriage and Family Therapist in Petaluma, California. Qualified in 2018, 8 years ago. Licensed in California.

Years since qualifying
8
Licensed in
CA
In the registry since
2012

Practice location Address checks out

365 Kuck Ln
Petaluma, CA 94952-9606
Phone: (707) 795-6954
Show map & directions

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

Specialties & licences

Marriage & Family Therapist (primary) Taxonomy 106H00000X · Licence 139879 (CA)

Record details

NPI number1346515566
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedMarch 21, 2012
Last updated in NPPESAugust 14, 2023
Certification dateAugust 14, 2023

Medicare enrollment

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

Medicare specialtyMARRIAGE AND FAMILY THERAPIST
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Accepts Medicare assignment Not indicated

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