IndividualActive
Mary Fainstat
NPI 1487847901 · Rheumatology Physician · Los Gatos, CA
Mary Fainstat is a Rheumatology Physician provider in Los Gatos, CA (NPI 1487847901).
Provider details
- NPI number
- 1487847901
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- G034304 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
131 Puesta Del Sol
Los Gatos, CA 95032-1132
Phone: (408) 866-7519
Fax: (408) 866-7519
Street-level locationGet directions
Mailing address
131 Puesta Del Sol
Los Gatos, CA 95032-1132
Registry dates
- Enumerated
- 2007-08-20
- Last updated
- 2007-08-20
Frequently asked questions
- What is Mary Fainstat's NPI number?
- Mary Fainstat's National Provider Identifier (NPI) is 1487847901, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Fainstat's specialty?
- Mary Fainstat is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Fainstat located?
- Mary Fainstat's practice location on file with NPPES is 131 Puesta Del Sol, Los Gatos, CA 95032-1132.
- What is Mary Fainstat's phone number?
- The practice phone number listed in the NPPES registry for Mary Fainstat is (408) 866-7519.
- Is Mary Fainstat's NPI active?
- Yes — Mary Fainstat's NPI (1487847901) is active in the NPPES registry as of the last update on 2007-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.