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

Thomas M. Callan, OD

Individual provider Optometrist · NPI 1043348394

Thomas M. Callan, OD is an Optometrist in Walnut Creek, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

675 Ygnacio Valley Rd Ste B103
Walnut Creek, CA 94596-3860
Phone: (925) 933-0270
Fax: (925) 933-4721
Show map & directions

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

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence OPT 7749 TPG (CA)

Record details

NPI number1043348394
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedMarch 1, 2007
Last updated in NPPESJuly 8, 2007
Mailing address675 Ygnacio Valley Rd, Suite B103, Walnut Creek, CA 94596-3860

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