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DIABLO VALLEY PERINATAL ASSOCIATES, INC
NPI 1255645172
Obstetrics & Gynecology - Maternal & Fetal Medicine in Walnut Creek, CA

Active since August 03, 2010CLIA 05D0928023 · Microscopy
110 TAMPICO, SUITE 100, WALNUT CREEK, CA 94598(925) 891-9033(925) 891-9066 Get Directions Write a Review

NPPES record last updated: January 21, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Diablo Valley Perinatal Associates, Inc NPPES

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

DIABLO VALLEY PERINATAL ASSOCIATES, INC (NPI 1255645172) is a healthcare organization registered as a maternal & fetal medicine in Walnut Creek, California and active in the NPI registry since August 2010. The organization holds a CLIA Microscopy certificate valid through February 2, 2028 and lists Jeffrey Dennis Traynor, President, as its authorized official.

NPPES Registry Identity

NPI1255645172
Entity TypeOrganization
Primary Taxonomy207VM0101X
Legal Business NameDIABLO VALLEY PERINATAL ASSOCIATES, INC
Location Address110 TAMPICO, SUITE 100Walnut Creek, CA 94598-2998
Mailing Address110 Tampico, Suite 100Walnut Creek, CA 94598-2998 · (925) 891-9033 · Fax (925) 891-9066
Phone(925) 891-9033
Fax(925) 891-9066
Organization SubpartNo
Authorized OfficialJeffrey Dennis TraynorPresident · (925) 891-9033
Enumeration DateAugust 3, 2010
Last NPPES UpdateJanuary 21, 2014
✔ NPI 1255645172 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Maternal & Fetal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207VM0101X
License✔ Licensed in CA · A68616
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.
110 TAMPICO, Walnut Creek, CA 94598
Open in Google Maps ↗

Other Identifiers 4

Medicare UPIN00A686253CA
Medicare UPIN00A686162CA
Medicaid00A686250CA
Medicaid00A6866160CA

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

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diablo Valley Perinatal Associates, Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Diablo Valley Perinatal Associates, Inc, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 3 within 10 miles. They are listed nearest first.

Clinicians, nearest first (3)

Brian Kellert, D.O.
Obstetrics/Gynecology
NPI 1215224761
110 TAMPICO DRIVE SUITE 100
Walnut Creek, CA 94598
(925) 891-9033
✔ PECOSSame address
Jeffrey Traynor, M.D.
Obstetrics/Gynecology
NPI 1316981699
110 TAMPICO STE 100
Walnut Creek, CA 94598
(925) 891-9033
✔ PECOSSame address
Rosa Won, M.D.
Pediatric Medicine
NPI 1952489718
1656 N CALIFORNIA BLVD SUITE 300
Walnut Creek, CA 94596
(925) 941-7955
✔ PECOS1.2 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 05D0928023

Diablo Valley Perinatal Associates · Walnut Creek, CA
Active · expires Feb 2, 2028
CLIA Number05D0928023
Laboratory TypePhysician Office
Certificate Effective DateFebruary 3, 2026
Certificate Expiration DateFebruary 2, 2028
Laboratory DirectorJeffrey Traynor, MD
Laboratory Phone(925) 891-9033
Laboratory LocationDiablo Valley Perinatal Associates110 Tampico Dr Ste 100, Walnut Creek, CA 94598
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Diablo Valley Perinatal Associates, Inc's NPI number?

The NPI number for Diablo Valley Perinatal Associates, Inc is 1255645172. It was assigned to this organization in the NPPES registry on August 3, 2010.

Where is Diablo Valley Perinatal Associates, Inc located?

Diablo Valley Perinatal Associates, Inc is located at 110 Tampico Suite 100, Walnut Creek, CA 94598. The listed phone number is (925) 891-9033.

What is Diablo Valley Perinatal Associates, Inc's specialty?

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

Is Diablo Valley Perinatal Associates, Inc enrolled in Medicare?

Yes. Diablo Valley Perinatal Associates, Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Diablo Valley Perinatal Associates, Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Diablo Valley Perinatal Associates, Inc, in Obstetrics/Gynecology and Pediatric Medicine. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Diablo Valley Perinatal Associates, Inc hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 05D0928023) is associated with this NPI, valid through February 2, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Diablo Valley Perinatal Associates, Inc was last updated on January 21, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.