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DR. CAROL EFRON PEYSER M.D.
NPI 1023233863
Specialist in Menlo Park, CA

Active since April 16, 2007Opted out of Medicare · through Jan 12, 2027
1300 UNIVERSITY DR, SUITE 4, MENLO PARK, CA 94025(650) 323-0433(650) 323-0434 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Carol Efron Peyser M.d. NPPES

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

DR. CAROL EFRON PEYSER M.D. (NPI 1023233863) is an individual specialist in Menlo Park, California, licensed in California (A50882) and active in the NPI registry since April 2007. She has opted out of Medicare through January 12, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1023233863
Entity TypeIndividualFemale
Primary Taxonomy174400000X
Provider Legal NameDR. CAROL EFRON PEYSERCredential: M.D.
Location Address1300 UNIVERSITY DR, SUITE 4Menlo Park, CA 94025-4203
Mailing Address1300 University Dr, Suite 4Menlo Park, CA 94025-4203 · (650) 323-0433 · Fax (650) 323-0434
Phone(650) 323-0433
Fax(650) 323-0434
Sole ProprietorNo
Enumeration DateApril 16, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1023233863 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · A50882
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
1300 UNIVERSITY DR, Menlo Park, CA 94025
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Carol Efron Peyser M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 12, 2015 through January 12, 2027.

Opt-Out Effective DateJanuary 12, 2015
Opt-Out In Effect ThroughJanuary 12, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Other Providers at the Same Location NPPES 8

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

DR. WILLIAM H MCLAIN DMD
Dentist (General Practice)
1300 UNIVERSITY DR, SUITE 7
MENLO PARK, CA 94025
San Mateo County (650) 326-1682
GRACIELA SHIMIZU OLIVA DDS, MSD
Dentist (Prosthodontics)
1300 UNIVERSITY DR, SUITE 1
MENLO PARK, CA 94025
San Mateo County (650) 600-8206
DR. GRANT F. HALISCHUK MD
Psychiatry & Neurology (Psychiatry)
1300 UNIVERSITY DR, SUITE 4
MENLO PARK, CA 94025
San Mateo County (650) 261-6655
DR. NEGAR PARRAVI DDS
Dentist (General Practice)
1300 UNIVERSITY DR, SUITE 3
MENLO PARK, CA 94025
San Mateo County (650) 325-2829
DR. LANA JEAN SUNDAHL D.D.S.
Dentist (General Practice)
1300 UNIVERSITY DR, #1-A
MENLO PARK, CA 94025
San Mateo County (659) 329-0167
DR. SCOTT W KALOUST DDS, MS
Dentist (Orthodontics and Dentofacial Orthopedics)
1300 UNIVERSITY DR
MENLO PARK, CA 94025
San Mateo County (650) 326-0250
DR. PAUL S. GERBER DDS, MS
Dentist (Pediatric Dentistry)
1300 UNIVERSITY DR, #8
MENLO PARK, CA 94025
San Mateo County (650) 323-0264
JILL M. COOPER
Marriage & Family Therapist
1300 UNIVERSITY DR, SUITE 6
MENLO PARK, CA 94025
San Mateo County (650) 529-5188

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 Carol Peyser's NPI number?

The NPI number for Carol Peyser is 1023233863. It was assigned to this individual provider in the NPPES registry on April 16, 2007.

Where is Carol Peyser located?

Carol Peyser practices at 1300 University Dr Suite 4, Menlo Park, CA 94025. The listed phone number is (650) 323-0433.

What is Carol Peyser's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Carol Peyser enrolled in Medicare?

No. Carol Peyser has opted out of Medicare through January 12, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Carol Peyser was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.