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

Individual provider Optometrist · NPI 1619344918

Dr. Darwin C Tsang, OD is an Optometry in Petaluma, California. Graduated from New England College of Optometry in 2015, 11 years ago. Practices with Marin Optometric Group Inc, a 2-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
11
Trained at
New England College of Optometry
Licensed in
CA
In the registry since
2015
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

401 Kenilworth Dr Inside Target Optical
Petaluma, CA 94952-3400
Phone: (707) 775-6022
Fax: (707) 782-0568
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 15225 TLG (CA)

Record details

NPI number1619344918
Entity typeIndividual (Type 1)
GenderMale
Credentials OD
Sole proprietorYes
NPI enumeratedAugust 21, 2015
Last updated in NPPESSeptember 23, 2016
Mailing address707 Kenilworth Drive, Inside Target Optical, Petaluma, CA 94952-3400

Medicare enrollment

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

Medicare specialtyOPTOMETRY
Medical schoolNEW ENGLAND COLLEGE OF OPTOMETRY
Graduated 2015 (11 years in practice)
Group practice Marin Optometric Group Inc — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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