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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.

KAREN ELAINE MERCOLA MD
NPI 1225035884
Internal Medicine - Hematology & Oncology in Stinson Beach, CA

Active since June 28, 2005
6901 PANORAMIC HIGHWAY PO BOX 297, STINSON BEACH, CA 94970(415) 868-1358(415) 862-5000 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Karen Elaine Mercola Md NPPES

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

KAREN ELAINE MERCOLA MD (NPI 1225035884) is an individual hematology & oncology provider in Stinson Beach, California, licensed in California (G30394) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1225035884
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameKAREN ELAINE MERCOLACredential: MD
Location Address6901 PANORAMIC HIGHWAY PO BOX 297Stinson Beach, CA 94970-0297
Mailing AddressPo Box 297Stinson Beach, CA 94970-0297 · (415) 868-1358 · Fax (415) 862-5000
Phone(415) 868-1358
Fax(415) 862-5000
Sole ProprietorNo
Enumeration DateJune 28, 2005
Last NPPES UpdateJuly 27, 2026
NPPES CertifiedJuly 27, 2026
✔ NPI 1225035884 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CA · G30394
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
6901 PANORAMIC HIGHWAY PO BOX 297, Stinson Beach, CA 94970
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Other Identifiers 1

Medicaid00G303940CA

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 Karen Mercola's NPI number?

The NPI number for Karen Mercola is 1225035884. It was assigned to this individual provider in the NPPES registry on June 28, 2005.

Where is Karen Mercola located?

Karen Mercola practices at 6901 Panoramic Highway PO Box 297, Stinson Beach, CA 94970. The listed phone number is (415) 868-1358.

What is Karen Mercola's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

When was this NPI record last updated?

The NPPES record for Karen Mercola was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.