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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

KARIN KERK M.D
NPI 1871817536
Internal Medicine in San Rafael, CA

Active since March 23, 2010PECOS Enrolled
4000 CIVIC CENTER DR STE 206, SAN RAFAEL, CA 94903(415) 925-8895(415) 464-5470 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Sep 11, 2026, May 12, 2026, Feb 11, 2022 (3 updates tracked since 2022).

About Karin Kerk M.d NPPES

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

KARIN KERK M.D (NPI 1871817536) is an individual internal medicine provider in San Rafael, California, licensed in California (A108988) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1871817536
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameKARIN KERKCredential: M.D
Location Address4000 CIVIC CENTER DR STE 206San Rafael, CA 94903-5233
Mailing Address4000 Civic Center Dr Ste 206San Rafael, CA 94903-5233 · (415) 925-8895 · Fax (415) 464-5470
Phone(415) 925-8895
Fax(415) 464-5470
Sole ProprietorYes
Enumeration DateMarch 23, 2010
Last NPPES UpdateSeptember 11, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2026
✔ NPI 1871817536 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A108988
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
4000 CIVIC CENTER DR STE 206, San Rafael, CA 94903
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Karin Kerk 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.

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
$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
$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 5

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

REGENTS OF THE UNIVERSITY OF CALIFORNIA
Clinic/Center (Rehabilitation)
4000 CIVIC CENTER DR STE 206
SAN RAFAEL, CA 94903
Marin County (415) 353-7598
WILSON WANG MD
Pediatrics
4000 CIVIC CENTER DR STE 206
SAN RAFAEL, CA 94903
Marin County (415) 925-8070
JENNIFER GRAYZAR M.D.
Emergency Medicine
4000 CIVIC CENTER DR STE 206
SAN RAFAEL, CA 94903
Marin County (415) 925-8865
ARMANDO GARCIA-MENDOZA MD
Pediatrics
4000 CIVIC CENTER DR STE 206
SAN RAFAEL, CA 94903
Marin County (415) 925-8070
DR. JOHN L CLOTHIER M.D.
Family Medicine
4000 CIVIC CENTER DR STE 206
SAN RAFAEL, CA 94903
Marin County (415) 925-8865

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 Karin Kerk's NPI number?

The NPI number for Karin Kerk is 1871817536. It was assigned to this individual provider in the NPPES registry on March 23, 2010.

Where is Karin Kerk located?

Karin Kerk practices at 4000 Civic Center Dr Ste 206, San Rafael, CA 94903. The listed phone number is (415) 925-8895.

What is Karin Kerk's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Karin Kerk enrolled in Medicare?

Yes. Karin Kerk is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Karin Kerk was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days 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.