Quick answers
- Where does Mary J. Hammes see patients?
- Medicare's clinician data lists 1 practice location in Rancho Cordova, CA. Call before your visit to confirm the address.
- What is Mary J. Hammes's specialty?
- Medicare lists Marriage and Family Therapist as the primary specialty.
- Does Mary J. Hammes accept Medicare assignment?
- Medicare's clinician data says Mary J. Hammes may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Mary J. Hammes offer telehealth?
- Medicare's clinician data says Mary J. Hammes offers telehealth services. Ask the office which visits can be done by video or phone.
- What is Mary J. Hammes's NPI number?
- 1114038197. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mary J. Hammes is enrolled with Medicare (CMS data updated 2026-10-02).
- 3400 Data DrRancho Cordova, CA 95670
Specialties
Find other clinicians: Marriage and Family Therapist, California →
Other marriage and family therapists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Graduation year | 1998 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1114038197 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians