1. Home
  2. Directory
  3. California
  4. Palo Alto
  5. Obstetrics Gynecology
  6. NPI Profile

RUTH ANN CRYSTAL, MD, A PROFESSIONAL CORPORATION
NPI 1881640423
Obstetrics & Gynecology in Palo Alto, CA

Active since May 25, 2006
3200 MIDDLEFIELD RD, SUITE C, PALO ALTO, CA 94306(650) 858-6800(650) 858-6868 Get Directions Write a Review

NPPES record last updated: December 3, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Ruth Ann Crystal, Md, A Professional Corporation NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RUTH ANN CRYSTAL, MD, A PROFESSIONAL CORPORATION (NPI 1881640423) is a healthcare organization registered as an obstetrics & gynecology in Palo Alto, California and active in the NPI registry since May 2006. The organization lists Ruth Ann Crystal, President, as its authorized official.

NPPES Registry Identity

NPI1881640423
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameRUTH ANN CRYSTAL, MD, A PROFESSIONAL CORPORATION
Location Address3200 MIDDLEFIELD RD, SUITE CPalo Alto, CA 94306-3046
Mailing Address3200 Middlefield Rd, Suite CPalo Alto, CA 94306-3046 · (650) 858-6800 · Fax (650) 858-6868
Phone(650) 858-6800
Fax(650) 858-6868
Organization SubpartNo
Authorized OfficialRuth Ann CrystalPresident · (650) 858-6800
Enumeration DateMay 25, 2006
Last NPPES UpdateDecember 3, 2007
✔ NPI 1881640423 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
3200 MIDDLEFIELD RD, Palo Alto, CA 94306
Open in Google Maps ↗

Other Identifiers 1

Medicare PINZZZ02416ZCA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RUTH ANN CRYSTAL MD
Obstetrics & Gynecology
3200 MIDDLEFIELD RD, SUITE C
PALO ALTO, CA 94306
Santa Clara County (650) 858-6800
DR. THALIA MARYAM HALE N.D.
Naturopath
3200 MIDDLEFIELD RD
PALO ALTO, CA 94306
Santa Clara County (650) 485-2758
TYLER THOMAS WUTHMANN ND
Naturopath
3200 MIDDLEFIELD RD
PALO ALTO, CA 94306
Santa Clara County (650) 485-2758

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 Ruth Ann Crystal, MD, A Professional Corporation's NPI number?

The NPI number for Ruth Ann Crystal, MD, A Professional Corporation is 1881640423. It was assigned to this organization in the NPPES registry on May 25, 2006.

Where is Ruth Ann Crystal, MD, A Professional Corporation located?

Ruth Ann Crystal, MD, A Professional Corporation is located at 3200 Middlefield Rd Suite C, Palo Alto, CA 94306. The listed phone number is (650) 858-6800.

What is Ruth Ann Crystal, MD, A Professional Corporation's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

When was this NPI record last updated?

The NPPES record for Ruth Ann Crystal, MD, A Professional Corporation was last updated on December 3, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.