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

William M Ko, MD

Individual provider Anesthesiology Physician · NPI 1629011762

William M Ko, MD is an Interventional Pain Management in Fullerton, California. Graduated from University of Southern California Keck School of Medicine in 2000, 26 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
26
Trained at
University of Southern California Keck School of Medicine
Licensed in
CA
In the registry since
2006
Specialties on file
2
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

100 E Valencia Mesa Dr Ste 310
Fullerton, CA 92835-3813
Phone: (714) 446-5200
Fax: (714) 446-5292
Show map & directions

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

Specialties & licences

Pain Medicine (Anesthesiology) Physician (primary) Taxonomy 207LP2900X · Licence A82916 (CA)
Anesthesiology Physician Taxonomy 207L00000X · Licence A82916 (CA)

Record details

NPI number1629011762
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 14, 2006
Last updated in NPPESNovember 5, 2021
Certification dateNovember 5, 2021
Mailing address100 E Valencia Mesa Dr Ste 310, Fullerton, CA 92835-3800

Medicare enrollment

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

Medicare specialtyINTERVENTIONAL PAIN MANAGEMENT
Also practisesANESTHESIOLOGY
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 2000 (26 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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