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

Mr. Thomas C O'Neil, MD

Individual provider Ophthalmology Physician · NPI 1831162999

Mr. Thomas C O'Neil, MD is an Ophthalmology in Tracy, California. Graduated from University of Iowa, Rj & L Carver College of Medicine in 1978, 48 years ago. Practices as a sole proprietor and accepts Medicare assignment. Licensed in California.

Years since qualifying
48
Trained at
University of Iowa, Rj & L Carver 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.

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Practice location Address checks out

303 W Eaton Ave
Tracy, CA 95376
Phone: (209) 836-1155
Fax: (209) 836-0478
Show map & directions

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

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence A34142 (CA)

Record details

NPI number1831162999
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 9, 2006
Last updated in NPPESJanuary 6, 2010
Mailing addressPo Box 986, Woodbridge, CA 95258-0986

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolUNIVERSITY OF IOWA, RJ & L CARVER COLLEGE OF MEDICINE
Graduated 1978 (48 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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