Ruth Crystal, MD
NPI 1396792651 · Obstetrics & Gynecology Physician · Palo Alto, CA
Ruth Crystal, MD is a Obstetrics & Gynecology Physician provider in Palo Alto, CA (NPI 1396792651).
Provider details
- NPI number
- 1396792651
- Entity type
- Individual
- Primary specialty
- Obstetrics & Gynecology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A54873 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
- 2006-05-30
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ruth Crystal's NPI number?
- Ruth Crystal's National Provider Identifier (NPI) is 1396792651, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Crystal's specialty?
- Ruth Crystal is listed in the NPPES registry with a primary specialty of Obstetrics & Gynecology Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Crystal located?
- Ruth Crystal's practice location on file with NPPES is 3200 Middlefield Rd, Palo Alto, CA 94306-3046.
- What is Ruth Crystal's phone number?
- The practice phone number listed in the NPPES registry for Ruth Crystal is (650) 858-6800.
- Is Ruth Crystal's NPI active?
- Yes — Ruth Crystal's NPI (1396792651) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.