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

William Sun

Individual provider Internal Medicine Physician · NPI 1649777616

William Sun is an Internal Medicine in Fresno, California. Qualified in 2018, 8 years ago. Practices with Galen Inpatient Physicians PC, a 1,031-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
8
Licensed in
CA
In the registry since
2018
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Practice location Address checks out

155 N Fresno St
Fresno, CA 93701-2302
Phone: (559) 499-6500
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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 A174650 (CA)

Record details

NPI number1649777616
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 6, 2018
Last updated in NPPESFebruary 2, 2022
Certification dateFebruary 2, 2022
Mailing address155 N Fresno St, Fresno, CA 93701-2302

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Galen Inpatient Physicians Pc — 1031 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in Fresno