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

Dr. Jeffrey A Haga, DO

Individual provider Family Medicine Physician · NPI 1902847320

Dr. Jeffrey A Haga, DO is a Family Medicine Physician in Rancho Cucamonga, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
Specialties on file
2
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

9500 Etiwanda Ave
Rancho Cucamonga, CA 91739-9662
Phone: (909) 463-5085
Show map & directions

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

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 20A9334 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 20A9334 (CA)

Record details

NPI number1902847320
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 9, 2006
Last updated in NPPESMarch 15, 2016
Mailing address9500 Etiwanda Ave, Rancho Cucamonga, CA 91739-9662

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