Karen Elaine Mercola, MD
Hematology & Oncology Physician · Stinson Beach, CA
Karen Elaine Mercola, MD is a hematology & oncology physician with a practice address in Stinson Beach, California, and NPI 1225035884, issued on Jun 28, 2005. Check the license (California G30394, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Elaine Mercola
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G30394 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6901 Panoramic Highway, Stinson Beach, CA 94970
- Phone
- (415) 868-1358
- Enumerated
- Jun 28, 2005
- Record last updated
- Aug 6, 2026
- Fax
- (415) 862-5000
- Medicaid ID
- 00G303940 CA
- Entity
- Type 1 · individual
Verify Karen Elaine Mercola in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G30394Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
25 Medicare Part D claims, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
Other hematology & oncology physician records in California
- Mark Abate, M.D.Santa Barbara, CA1588778674
- Iman Abdalla, MDLos Angeles, CA1730248311
- Haifaa Abdulhaq, MDFresno, CA1508024647
- Nihal Abdulla, MDLos Alamitos, CA1750585345
- Mehrad Abedi, M.D.Sacramento, CA1467459222
- Oyewale Abidoye, M.D.La Jolla, CA1790841815
- Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
- Mohamad Adada, M.D., PHDRoseville, CA1528590734
- Jesse Adams, MDSacramento, CA1851479554
- Thompson Adams, MDSanta Monica, CA1407880891
Common questions
What is Karen Elaine Mercola, MD's NPI number?
Karen Elaine Mercola, MD's National Provider Identifier (NPI) is 1225035884, issued on Jun 28, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Karen Elaine Mercola, MD located?
The NPPES record lists a practice address at 6901 Panoramic Highway, Stinson Beach, CA, 94970. Phone: (415) 868-1358. Providers update this record themselves, so call before visiting.
How can I verify Karen Elaine Mercola, MD's license?
NPPES lists California license number G30394, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karen Elaine Mercola, MD prescribe under Medicare Part D?
In 2024, Karen Elaine Mercola, MD had 25 Medicare Part D claims; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.