Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Karen Jean Fong, MD

Individual provider Otolaryngology Physician · NPI 1548275068

Karen Jean Fong, MD practises Otolaryngology in Walnut Creek, California. Graduated from Baylor College of Medicine in 1992, 34 years ago. Practices with Bass Medical Group, a 292-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
34
Trained at
Baylor College of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

2637 Shadelands Dr
Walnut Creek, CA 94598-2512
Phone: (925) 300-4680
Fax: (925) 906-9780
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5924 Stoneridge Dr Ste 108, Pleasanton, CA 94588-5400 — (925) 300-4680

Specialties & licences

Otolaryngology Physician (primary) Taxonomy 207Y00000X · Licence A52969 (CA)

Record details

NPI number1548275068
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 31, 2006
Last updated in NPPESMay 1, 2025
Certification dateMay 1, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOTOLARYNGOLOGY
Medical schoolBAYLOR COLLEGE OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice Bass Medical Group — 292 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients214
Services billed 849 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $1,955 49 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $1,003 4 payments · travel or lodging paid or reimbursed, such as to attend a conference

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Stanford Health Care Hospital · Stanford, CA
  • John Muir Medical Center - Walnut Creek Campus Hospital · Walnut Creek, CA
  • Marian Regional Medical Center Hospital · Santa Maria, CA

Colleagues at Bass Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 292 clinicians in the practice; 12 are shown here.

Other providers in Walnut Creek