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JOHN MUIR PERINATAL MEDICAL GROUP
NPI 1558397141
Obstetrics & Gynecology - Maternal & Fetal Medicine in Walnut Creek, CA

Active since June 24, 2006
1656 N. CALFIORNIA BLVD., SUITE 300, WALNUT CREEK, CA 94596(925) 941-7955(925) 941-7986 Get Directions Write a Review

NPPES record last updated: December 17, 2009. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About John Muir Perinatal Medical Group NPPES

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

JOHN MUIR PERINATAL MEDICAL GROUP (NPI 1558397141) is a healthcare organization registered as a maternal & fetal medicine in Walnut Creek, California and active in the NPI registry since June 2006. The organization lists M. Katherine Sorenson, Vice President, as its authorized official.

NPPES Registry Identity

NPI1558397141
Entity TypeOrganization
Primary Taxonomy207VM0101X
Legal Business NameJOHN MUIR PERINATAL MEDICAL GROUP
Location Address1656 N. CALFIORNIA BLVD., SUITE 300Walnut Creek, CA 94596
Mailing AddressPo Box 9017Walnut Creek, CA 94598-0917 · (925) 941-7985 · Fax (925) 952-2850
Phone(925) 941-7955
Fax(925) 941-7986
Organization SubpartYesParent: John Muir Physician Network
Authorized OfficialM. Katherine SorensonVice President · (925) 952-2888
Enumeration DateJune 24, 2006
Last NPPES UpdateDecember 17, 2009
✔ NPI 1558397141 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
Definition

An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.

1656 N. CALFIORNIA BLVD., Walnut Creek, CA 94596
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Other Identifiers 2

Medicare PINZZZ47768ZCA
MedicaidGR006875KCA

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

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 John Muir Perinatal Medical Group's NPI number?

The NPI number for John Muir Perinatal Medical Group is 1558397141. It was assigned to this organization in the NPPES registry on June 24, 2006.

Where is John Muir Perinatal Medical Group located?

John Muir Perinatal Medical Group is located at 1656 N. Calfiornia Blvd. Suite 300, Walnut Creek, CA 94596. The listed phone number is (925) 941-7955.

What is John Muir Perinatal Medical Group's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.

When was this NPI record last updated?

The NPPES record for John Muir Perinatal Medical Group was last updated on December 17, 2009. NPI Profile syncs with the weekly NPPES data releases published by CMS.