Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Geoffrey Thomas Sasaki, MD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1124212386

Dr. Geoffrey Thomas Sasaki, MD practises Pathology in Chico, California. Graduated from Uniformed Services Uhs Fe Hebert School of Med in 1999, 27 years ago. Practices with Pathology Sciences Medical Group, a 9-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
Trained at
Uniformed Services Uhs Fe Hebert School of Med
Licensed in
CA
In the registry since
2007
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

183 E 8th Ave
Chico, CA 95926-2341 Not confirmed with CMS for 12 years — call before visiting
Phone: (530) 891-6244
Fax: (530) 891-0134
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence C55896 (CA)
Dermatopathology (Pathology) Physician Taxonomy 207ZD0900X · Licence C55896 (CA)

Record details

NPI number1124212386
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 30, 2007
Last updated in NPPESAugust 15, 2014

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolUNIFORMED SERVICES UHS FE HEBERT SCHOOL OF MED
Graduated 1999 (27 years in practice)
Group practice Pathology Sciences Medical Group — 9 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 patients3,118
Services billed 8,487 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

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 $426 7 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 Pathology Sciences Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Chico