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DR. SYLVIA FLORES M.D.
NPI 1114904307
Obstetrics & Gynecology in Greenbrae, CA

Active since December 28, 2005PECOS Enrolled
1260 S ELISEO DR, GREENBRAE, CA 94904(415) 461-7800(415) 461-3487 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Dr. Sylvia Flores M.d. NPPES

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

DR. SYLVIA FLORES M.D. (NPI 1114904307) is an individual obstetrics & gynecology provider in Greenbrae, California, licensed in California (G75624) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1114904307
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. SYLVIA FLORESCredential: M.D.
Location Address1260 S ELISEO DRGreenbrae, CA 94904-2009
Mailing Address1260 S Eliseo DrGreenbrae, CA 94904-2009 · (415) 461-7800 · Fax (415) 461-3487
Phone(415) 461-7800
Fax(415) 461-3487
Sole ProprietorNo
Enumeration DateDecember 28, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1114904307 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · G75624
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.
1260 S ELISEO DR, Greenbrae, CA 94904
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Sylvia Flores M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Sylvia Flores reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Prima Medical Foundation
7.9 mi
Clinic/Center
4 HAMILTON LANDING, SUITE 100
Novato, CA 94949
  • Reassigned Medicare billing, California enrollment
  • 111 clinicians in this Medicare group
NPI 1811217946 (415) 884-1840

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94904 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$154.04 typical visit price
range $69.07 – $202.63
Typical copayment $38.51 (range $17.26 – $50.65)
Most-billed visit code 99204
Established Patient
$85.00 typical visit price
range $23.44 – $166.64
Typical copayment $21.25 (range $5.86 – $41.66)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 14

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

CORTNEY HARPER M.D.
Obstetrics & Gynecology
1260 S ELISEO DR, FLOOR 2
GREENBRAE, CA 94904
Marin County (415) 461-7800
DR. DAVID B. GALLAND M.D.
Obstetrics & Gynecology
1260 S ELISEO DR, FLOOR 2
GREENBRAE, CA 94904
Marin County (415) 461-7800
DR. JAY A KAISER M.D.
Radiology (Diagnostic Radiology)
1260 S ELISEO DR, SUITE 100
GREENBRAE, CA 94904
Marin County (415) 461-9033
DR. GERALD P WILNER M.D.
Obstetrics & Gynecology (Gynecology)
1260 S ELISEO DR, FLOOR 2
GREENBRAE, CA 94904
Marin County (415) 461-7800
ROBIN LITT N.P.
Nurse Practitioner (Obstetrics & Gynecology)
1260 S ELISEO DR
GREENBRAE, CA 94904
Marin County (415) 461-7800
MARIN MAGNETIC RESONANCE IMAGING CENTER, LLC
Clinic/Center (Magnetic Resonance Imaging (MRI))
1260 S ELISEO DR, SUITE 101
GREENBRAE, CA 94904
Marin County (415) 461-9033
PRIMA MEDICAL GROUP, INC.
Non-Pharmacy Dispensing Site
1260 S ELISEO DR
GREENBRAE, CA 94904
Marin County (415) 924-1214
PRIMA MEDICAL FOUNDATION
General Practice
1260 S ELISEO DR, FLOOR 2
GREENBRAE, CA 94904
Marin County (415) 461-7800

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 Sylvia Flores's NPI number?

The NPI number for Sylvia Flores is 1114904307. It was assigned to this individual provider in the NPPES registry on December 28, 2005.

Where is Sylvia Flores located?

Sylvia Flores practices at 1260 S Eliseo Dr, Greenbrae, CA 94904. The listed phone number is (415) 461-7800.

What is Sylvia Flores's specialty?

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

Is Sylvia Flores enrolled in Medicare?

Yes. Sylvia Flores is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Sylvia Flores's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sylvia Flores reassigns Medicare benefits to Prima Medical Foundation (Novato, CA). The 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 Sylvia Flores's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sylvia Flores was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.