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

Dr. Jonathan David Grein, MD

Individual provider Internal Medicine Physician · NPI 1295956092

Dr. Jonathan David Grein, MD is an Internal Medicine Physician in Los Angeles, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
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

8635 W 3rd St Ste 1150-W
Los Angeles, CA 90048-6101
Phone: (310) 423-5574
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 A94549 (CA)
Infectious Disease Physician Taxonomy 207RI0200X · Licence A94549 (CA)

Record details

NPI number1295956092
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 1, 2007
Last updated in NPPESMarch 23, 2010

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