Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Robert Isaacs, MD

Individual provider Family Medicine Physician · NPI 1912927286

Dr. Robert Isaacs, MD is registered under Family Practice in Santa Rosa, California. Graduated from University of California, San Diego School of Medicine in 1982, 44 years ago. Practices with Jon Sterngold MD Inc a Professional Corporation, a 5-clinician group, works from 4 locations and accepts Medicare assignment. Licensed in California and South Carolina.

Years since qualifying
44
Trained at
University of California, San Diego School of Medicine
Licensed in
CA, SC
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1287 Fulton Rd
Santa Rosa, CA 95401-4923
Phone: (707) 888-5808
Fax: (707) 577-8315
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (3)

  • 4053 Lone Tree Way, Antioch, CA 94531-6210 — (925) 756-0849
  • 2500 Milvia St, Berkeley, CA 94704-2636 — (510) 204-5600
  • 20101 Lake Chabot Rd Fl 1, Castro Valley, CA 94546-5305 — (510) 886-3400

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G75679 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 18222 (SC)

Record details

NPI number1912927286
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 20, 2006
Last updated in NPPESApril 24, 2019

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 1982 (44 years in practice)
Group practice Jon Sterngold Md Inc A Professional Corporation — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients146
Services billed 173 a service is one billed item, such as a visit, a test or a procedure
Average patient age50

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 $41 2 payments · a meal or drink at a meeting or visit, not a fee

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.

Colleagues at Jon Sterngold MD Inc a Professional Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 5 clinicians in the practice; 3 are shown here.

Other providers in Santa Rosa