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

Dr. Theodore Anthony Tollivoro, MD

Individual provider Gastroenterology Physician · NPI 1811230147

Dr. Theodore Anthony Tollivoro, MD is a Gastroenterology in Clackamas, Oregon. Graduated from Saint Louis University School of Medicine in 2013, 13 years ago. Practices with Kaiser Foundation Health Plan of the Northwest, a 1,811-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in California and Oregon.

Years since qualifying
13
Trained at
Saint Louis University School of Medicine
Licensed in
CA, OR
In the registry since
2013
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

9900 SE Sunnyside Rd
Clackamas, OR 97015-9777
Phone: (800) 813-2000
Show map & directions

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

Additional practice locations (2)

  • 2425 Geary Blvd, San Francisco, CA 94115-3358 — (415) 833-9182
  • 1479 Ygnacio Valley Rd # 200, Walnut Creek, CA 94598-2986 — (925) 296-7340

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD224469 (OR)
Gastroenterology Physician Taxonomy 207RG0100X · Licence A132935 (CA)

Record details

NPI number1811230147
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 4, 2013
Last updated in NPPESAugust 5, 2025
Certification dateAugust 5, 2025

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Kaiser Foundation Health Plan Of The Northwest — 1811 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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