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

Dr. Greg A Brown, MD

Individual provider Internal Medicine Physician · NPI 1720135346

Dr. Greg A Brown, MD is an Internal Medicine in San Clemente, California. Qualified in 1983, 43 years ago. Accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
43
Licensed in
CA
In the registry since
2007
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

655 Camino De Los Mares Ste 124
San Clemente, CA 92673-2809
Phone: (949) 661-9657
Fax: (949) 661-1352
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A40335 (CA)

Record details

NPI number1720135346
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 4, 2007
Last updated in NPPESDecember 16, 2008
Mailing address655 Camino De Los Mares, Suite 124, San Clemente, CA 92673-2809

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesADDICTION MEDICINE
Medical schoolOTHER
Graduated 1983 (43 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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