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

Edmund Co Yao, MD

Individual provider Internal Medicine Physician · NPI 1245328004

Edmund Co Yao, MD is an Internal Medicine in Stockton, California. Qualified in 1991, 35 years ago. Accepts Medicare assignment. Licensed in California.

Years since qualifying
35
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

3031 W March Ln Ste 101
Stockton, CA 95219-6568
Phone: (209) 472-7100
Fax: (209) 472-7108
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A84312 (CA)

Record details

NPI number1245328004
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 10, 2006
Last updated in NPPESDecember 30, 2019
Certification dateDecember 30, 2019

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesGENERAL PRACTICE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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