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

Dr. Matthew Rulon Williams, MD

Individual provider Pediatrics Physician · NPI 1831423250

Dr. Matthew Rulon Williams, MD is a Pediatric Medicine in San Diego, California. Graduated from University of Colorado School of Medicine, Denver in 2008, 18 years ago. Practices with Rady Children's Hospital San Diego, a 161-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
18
Trained at
University of Colorado School of Medicine, Denver
Licensed in
CA
In the registry since
2009
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

3020 Childrens Way
San Diego, CA 92123-4223
Phone: (858) 966-5855
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Cardiology Physician (primary) Taxonomy 2080P0202X · Licence A109398 (CA)
Pediatrics Physician Taxonomy 208000000X · Licence A109398 (CA)

Record details

NPI number1831423250
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 2, 2009
Last updated in NPPESMay 3, 2017

Medicare enrollment

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

Medicare specialtyPEDIATRIC MEDICINE
Also practisesCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF COLORADO SCHOOL OF MEDICINE, DENVER
Graduated 2008 (18 years in practice)
Group practice Rady Children'S Hospital San Diego — 161 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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