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

Mr. John E Turns, MD

Individual provider Sleep Medicine (Internal Medicine) Physician · NPI 1942371588

Mr. John E Turns, MD is a Family Practice in Castro Valley, California. Graduated from Tufts University School of Medicine in 1979, 47 years ago. Works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
47
Trained at
Tufts University School of Medicine
Licensed in
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.

See every abbreviation used in this directory →

Practice location Address checks out

22101 Redwood Rd
Castro Valley, CA 94546-7107
Phone: (510) 582-0777
Show map & directions

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

Additional practice locations (1)

  • 5601 Norris Canyon Rd, San Ramon, CA 94583 — (925) 830-0644

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence G044402 (CA)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence G044402 (CA)

Record details

NPI number1942371588
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 13, 2006
Last updated in NPPESJuly 21, 2022
Mailing address22101 Redwood Rd, Castro Valley, CA 94546

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1979 (47 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services