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

Dr. John Alden Weeks, MD

Individual provider Family Medicine Physician · NPI 1962473074

Dr. John Alden Weeks, MD is a Family Medicine Physician in Clearlake, 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

15230 Lakeshore Dr Ste 101
Clearlake, CA 95422-8107
Phone: (707) 994-7377
Fax: (707) 994-9456
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 G38230 (CA)

Record details

NPI number1962473074
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 27, 2006
Last updated in NPPESMarch 18, 2015
Mailing addressPo Box 4119, 15230 Lakeshore Drive, Suite 101, Clearlake, CA 95422-4119

Other providers in Clearlake