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

Frank Trieste Grassi

Individual provider Critical Care Medicine (Internal Medicine) Physician · NPI 1659342624

Frank Trieste Grassi is a Critical Care (Intensivists) in San Diego, California. Graduated from Tulane University School of Medicine in 1997, 29 years ago. Practices with Chest Medicine and Critical Care Medical Group Inc, a 26-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
29
Trained at
Tulane University School of Medicine
Licensed in
CA
In the registry since
2006
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Practice location Address checks out

7901 Frost St
San Diego, CA 92123-2701
Phone: (858) 939-3411
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Internal Medicine) Physician (primary) Taxonomy 207RC0200X · Licence C52598 (CA)

Record details

NPI number1659342624
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJanuary 30, 2006
Last updated in NPPESMarch 30, 2026
Certification dateMarch 30, 2026

Medicare enrollment

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

Medicare specialtyCRITICAL CARE (INTENSIVISTS)
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1997 (29 years in practice)
Group practice Chest Medicine And Critical Care Medical Group Inc — 26 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

Other providers in San Diego