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

John Calvin Jackson IV, MD

Individual provider Family Medicine Physician · NPI 1487689840

John Calvin Jackson IV, MD is a Family Practice in Grass Valley, California. Graduated from University of California, Irvine, California College of Medicine in 1977, 49 years ago. Practices with Sierra Medical Partnership, an 18-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
49
Trained at
University of California, Irvine, California College of Medicine
Licensed in
CA
In the registry since
2006
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

10565 Brunswick Rd Ste 1
Grass Valley, CA 95945-9053
Phone: (530) 272-0501
Fax: (530) 272-0571
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 G37527 (CA)

Record details

NPI number1487689840
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 12, 2006
Last updated in NPPESJuly 8, 2007
Mailing address10565 Brunswick Rd, Ste 1, Grass Valley, CA 95945-9053

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF CALIFORNIA, IRVINE, CALIFORNIA COLLEGE OF MEDICINE
Graduated 1977 (49 years in practice)
Group practice Sierra Medical Partnership — 18 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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