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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: October 18, 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

Medicare Participation & PECOS CMS

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

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.

Medicare Billing Reassignment

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

Cep America - California
3.9 mi
Emergency Medicine
250 BON AIR RD
Greenbrae, CA 94904
  • Reassigned Medicare billing, California enrollment
  • 2,323 clinicians in this Medicare group
NPI 1417975319 (415) 925-7000

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 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.

Which organization bills Medicare for Cynthia Clark's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Clark reassigns Medicare benefits to Cep America - California (Greenbrae, 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 Cynthia Clark'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 Cynthia Clark 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.