MARK NEAL ISAACS M.D.
NPI 1396785598
Specialist in Walnut Creek, CA

Q: What is Mark Isaacs's NPI number?

The NPI number for Mark Isaacs is 1396785598. It was assigned to this individual provider in the NPPES registry on June 7, 2006.

Q: What is Mark Isaacs's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Isaacs was last updated on January 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since June 07, 2006

1981 N BROADWAY STE 270, WALNUT CREEK, CA 94596(925) 932-6442(925) 932-6260 Get Directions Write a Review

NPPES record last updated: January 25, 2023. Verified against the NPPES registry weekly; last sync: September 06, 2026.

Record update history: Jan 25, 2023, Jan 21, 2023, Jan 9, 2023 and 4 more (7 updates tracked since 2017).

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About Mark Neal Isaacs M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK NEAL ISAACS M.D. (NPI 1396785598) is an individual specialist in Walnut Creek, California, licensed in California (G32292) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1396785598

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameMARK NEAL ISAACSCredential: M.D.

Location Address1981 N BROADWAY STE 270Walnut Creek, CA 94596-3886

Mailing Address630 Thomas L Berkley Way, Apt 508Oakland, CA 94612-1865 · (510) 569-1310

Phone(925) 932-6442

Fax(925) 932-6260

Sole ProprietorYes

Enumeration DateJune 7, 2006

Last NPPES UpdateJanuary 25, 20237 updates tracked since enumeration

NPPES CertifiedJanuary 9, 2023

✔ NPI 1396785598 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in CA · G32292

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

Also ListedFamily MedicineTaxonomy 207Q00000X · License G32292 (CA)

1981 N BROADWAY STE 270, Walnut Creek, CA 94596

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Isaacs's NPI number?

The NPI number for Mark Isaacs is 1396785598. It was assigned to this individual provider in the NPPES registry on June 7, 2006.

Where is Mark Isaacs located?

Mark Isaacs practices at 1981 N Broadway Ste 270, Walnut Creek, CA 94596. The listed phone number is (925) 932-6442.

What is Mark Isaacs's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Mark Isaacs was last updated on January 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.