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

Gregory Jason Lam, MD

Individual provider Internal Medicine Physician · NPI 1871955922

Gregory Jason Lam, MD is an Internal Medicine in Laguna Hills, California. Graduated from University of California, San Francisco School of Medicine in 2016, 10 years ago. Practices with Regents of the University of California, a 61-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
10
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2016
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

23961 Calle De La Magdalena Ste 200
Laguna Hills, CA 92653-3645
Phone: (949) 238-4100
Show map & directions

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

Additional practice locations (1)

  • 1245 16th St Ste 309, Santa Monica, CA 90404 — (310) 319-4377

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A151470 (CA)

Record details

NPI number1871955922
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 27, 2016
Last updated in NPPESJuly 18, 2024
Certification dateJune 7, 2024

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Regents Of The University Of California — 61 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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