Mary Hammerstein, LMFT-A
NPI 1447007935 · Marriage & Family Therapist · Warwick, RI
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Hammerstein, LMFT-A is a Marriage & Family Therapist provider in Warwick, RI (NPI 1447007935).
Provider details
- NPI number
- 1447007935
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- LMFT-A
- Sex
- Female
- Sole proprietor
- No
- License
- MFT00009-A (RI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2024-05-02
- Last updated
- 2024-05-02
- Certified
- 2024-05-02
Frequently asked questions
- What is Mary Hammerstein's NPI number?
- Mary Hammerstein's National Provider Identifier (NPI) is 1447007935, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Hammerstein's specialty?
- Mary Hammerstein is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Mary Hammerstein located?
- Mary Hammerstein's practice location on file with NPPES is 50 Health Ln, Warwick, RI 02886-2711.
- What is Mary Hammerstein's phone number?
- The practice phone number listed in the NPPES registry for Mary Hammerstein is (401) 732-5656.
- Does Mary Hammerstein accept Medicare?
- Mary Hammerstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Hammerstein's NPI active?
- Yes — Mary Hammerstein's NPI (1447007935) is active in the NPPES registry as of the last update on 2024-05-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.