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

Dr. Mark Dwight Williams Jr., MD

Individual provider General Practice Physician · NPI 1336170869

Dr. Mark Dwight Williams Jr., MD is an Emergency Medicine in San Diego, California. Graduated from University of Southern California Keck School of Medicine in 1999, 27 years ago. Practices with Emergency Physicians Urgent Care Inc, a 140-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
27
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

34800 Wilson Dr Nmcsd Attn: Medical Staff Services
San Diego, CA 92134
Phone: (619) 532-6460
Fax: (619) 532-6299
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A80386 (CA)
General Practice Physician Taxonomy 208D00000X · Licence A80386 (CA)

Record details

NPI number1336170869
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 5, 2006
Last updated in NPPESFebruary 24, 2021
Certification dateFebruary 24, 2021

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Emergency Physicians Urgent Care Inc — 140 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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