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

Dr. Douglas J. Hay, MD

Individual provider Internal Medicine Physician · NPI 1386690980

Dr. Douglas J. Hay, MD is an Internal Medicine Physician in Colton, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

1300 E Cooley Dr
Colton, CA 92324-3905
Phone: (909) 370-4100
Fax: (909) 796-4158
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 G47396 (CA)

Record details

NPI number1386690980
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 25, 2006
Last updated in NPPESJuly 13, 2026

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