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

Ron Gutmark, MD

Individual provider Internal Medicine Physician · NPI 1609189893

Ron Gutmark, MD is an Internal Medicine Physician in Glendora, California. Licensed in California, Maryland, Michigan and Pennsylvania. Registered with an NPI since 2010.

Licensed in
CA, MD, MI, PA
In the registry since
2010
Specialties on file
4
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

210 S Grand Ave #106
Glendora, CA 91741-4205
Phone: (626) 335-0535
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Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence A129409 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence P25846 (MD)
Ophthalmology Physician Taxonomy 207W00000X · Licence MD447468 (PA)
Ophthalmology Physician Taxonomy 207W00000X · Licence 4301106769 (MI)

Record details

NPI number1609189893
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 16, 2010
Last updated in NPPESJune 29, 2016
Mailing address210 S Grand Ave, 106, Glendora, CA 91741-4205

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