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

Mark Neal Isaacs, MD

Individual provider Family Medicine Physician · NPI 1396785598

Mark Neal Isaacs, MD is a Family Medicine Physician in Walnut Creek, California. Practices as a sole proprietor. Licensed in California.

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

1981 N Broadway Ste 270
Walnut Creek, CA 94596-3886
Phone: (925) 932-6442
Fax: (925) 932-6260
Show map & directions

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

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence G32292 (CA)
Family Medicine Physician Taxonomy 207Q00000X · Licence G32292 (CA)

Record details

NPI number1396785598
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 7, 2006
Last updated in NPPESJanuary 25, 2023
Certification dateJanuary 9, 2023

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