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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

CYNTHIA BILLMEYER CLARK MD
NPI 1144219767
Emergency Medicine in San Rafael, CA

Active since October 17, 2005PECOS Enrolled
4000 CIVIC CENTER DR, SAN RAFAEL, CA 94903(209) 342-2300(209) 524-4240 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Cynthia Billmeyer Clark Md NPPES

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

CYNTHIA BILLMEYER CLARK MD (NPI 1144219767) is an individual emergency medicine provider in San Rafael, California, licensed in California (G53191) and active in the NPI registry since October 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1144219767
Entity TypeIndividualFemale
Primary Taxonomy207P00000X
Provider Legal NameCYNTHIA BILLMEYER CLARKCredential: MD
Location Address4000 CIVIC CENTER DRSan Rafael, CA 94903-4171
Mailing Address4301 Northstar WayModesto, CA 95356-9262 · (209) 342-2300 · Fax (209) 524-4240
Phone(209) 342-2300
Fax(209) 524-4240
Sole ProprietorNo
Enumeration DateOctober 17, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1144219767 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in CA · G53191
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
4000 CIVIC CENTER DR, San Rafael, CA 94903
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Other Identifiers 2

Medicaid00G531910CA
Other00G531910CA · Bcbs

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Molina Healthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Cynthia Billmeyer Clark Md 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94903 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
$104.67 typical visit price
range $69.07 – $202.63
Typical copayment $26.16 (range $17.26 – $50.65)
Most-billed visit code 99203
Established Patient
$119.61 typical visit price
range $23.44 – $166.64
Typical copayment $29.90 (range $5.86 – $41.66)
Most-billed visit code 99214
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 20

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

MIRANDA MINH-HAN NGUYEN
Physician Assistant
4000 CIVIC CENTER DR
SAN RAFAEL, CA 94903
Marin County (415) 492-3333
DANIEL J. SOLOMON, MD INC
Orthopaedic Surgery (Sports Medicine)
4000 CIVIC CENTER DR, SUITE 205
SAN RAFAEL, CA 94903
Marin County (415) 492-1600
DR. CRIZELDA LAURON O.D.
Optometrist
4000 CIVIC CENTER DR, SUITE 200A
SAN RAFAEL, CA 94903
Marin County (415) 444-0300
SHELLEY A PALFY MD
Pediatrics
4000 CIVIC CENTER DR, #205
SAN RAFAEL, CA 94903
Marin County (415) 479-7244
ESTEFANY GUTIERREZ
Behavior Technician
4000 CIVIC CENTER DR
SAN RAFAEL, CA 94903
Marin County (628) 877-0040
KURT HOYT KUNZEL MD
Emergency Medicine
4000 CIVIC CENTER DR
SAN RAFAEL, CA 94903
Marin County (209) 342-2300
RAJDEEP SINGH FNP
Nurse Practitioner (Family)
4000 CIVIC CENTER DR, SUITE 200
SAN RAFAEL, CA 94903
Marin County (415) 492-3333
PRIMA MEDICAL GROUP, INC.
Non-Pharmacy Dispensing Site
4000 CIVIC CENTER DR, 200
SAN RAFAEL, CA 94903
Marin County (415) 492-3333

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 Cynthia Clark's NPI number?

The NPI number for Cynthia Clark is 1144219767. It was assigned to this individual provider in the NPPES registry on October 17, 2005.

Where is Cynthia Clark located?

Cynthia Clark practices at 4000 Civic Center Dr, San Rafael, CA 94903. The listed phone number is (209) 342-2300.

What is Cynthia Clark's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Is Cynthia Clark enrolled in Medicare?

Yes. Cynthia Clark is registered in the Medicare PECOS enrollment system.

What insurance does Cynthia Clark accept?

Health plans from Molina Healthcare list Cynthia Clark as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Cynthia Clark was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.