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

Dr. Andrew C Johnston, MD

Individual provider Internal Medicine Physician · NPI 1710931019

Dr. Andrew C Johnston, MD is an Internal Medicine in Carmel, California. Graduated from Northwestern University Feinberg Medical School in 1986, 40 years ago. Practices with Open Door Community Health Centers, a 114-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona and California.

Years since qualifying
40
Trained at
Northwestern University Feinberg Medical School
Licensed in
AZ, CA
In the registry since
2006
Specialties on file
2
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

275 Crossroads Blvd A
Carmel, CA 93923-8684
Phone: (831) 718-9701
Show map & directions

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

Additional practice locations (1)

  • 3750 Rohnerville Road, Fortuna, CA 95540 — (707) 725-4477

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G88534 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 25495 (AZ)

Record details

NPI number1710931019
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 20, 2006
Last updated in NPPESOctober 30, 2020
Certification dateOctober 29, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1986 (40 years in practice)
Group practice Open Door Community Health Centers — 114 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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