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

Dr. Eric John Holtrop, MD

Individual provider Internal Medicine Physician · NPI 1881790459

Dr. Eric John Holtrop, MD is an Internal Medicine Physician in Grass Valley, 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

280 Sierra College Dr Ste 120
Grass Valley, CA 95945-5763
Phone: (530) 477-4480
Fax: (530) 274-7532
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 A72244 (CA)

Record details

NPI number1881790459
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 14, 2006
Last updated in NPPESAugust 5, 2016
Mailing address3400 Data Dr, Quality Management, Rancho Cordova, CA 95670-7956

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