MS. MARY HANNAH HESS
NPI 1346515566
Marriage & Family Therapist in Petaluma, CA
About Ms. Mary Hannah Hess NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY HANNAH HESS (NPI 1346515566) is an individual marriage & family therapist in Petaluma, California, licensed in California (139879) and active in the NPI registry since March 2012. She is enrolled in Medicare PECOS and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ms. Mary Hannah Hess is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Hess reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Jose, CA 95113
- Reassigned Medicare billing, California enrollment
- 3,139 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Mary Hess's NPI number?
The NPI number for Mary Hess is 1346515566. It was assigned to this individual provider in the NPPES registry on March 21, 2012.
Where is Mary Hess located?
Mary Hess practices at 365 Kuck Ln, Petaluma, CA 94952. The listed phone number is (707) 795-6954.
What is Mary Hess's specialty?
The primary specialty registered for this NPI is Marriage & Family Therapist with taxonomy code 106H00000X.
Is Mary Hess enrolled in Medicare?
Yes. Mary Hess is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Hess's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Hess reassigns Medicare benefits to Grow Healthcare Group PC (San Jose, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Hess's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mary Hess was last updated on August 14, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.
# Ms. Mary Hannah Hess · NPI 1346515566
Marriage & Family Therapist provider in Petaluma, California. Individual provider, active in the CMS NPPES registry since March 21, 2012.
## Identity
- **NPI:** 1346515566 (Entity type: Individual)
- **Enumerated:** March 21, 2012
- **Primary specialty:** Marriage & Family Therapist · taxonomy 106H00000X
- **State license:** 139879 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 365 KUCK LN, Petaluma, CA 94952-9606
- **Phone:** (707) 795-6954
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Grow Healthcare Group PC (NPI 1154994846, San Jose, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** August 14, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1346515566) · Data from the CMS NPPES public registry.