MR. WILLIAM MORRIS ISENBERG MD - NPI 1265497101 - Obstetrics & Gynecology in Oakland, CA

Q: What is William Isenberg's NPI number?

The NPI number for William Isenberg is 1265497101. It was assigned to this individual provider in the NPPES registry on April 20, 2006.

Q: What is William Isenberg's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Q: When was this NPI record last updated?

The NPPES record for William Isenberg was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.

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About Mr. William Morris Isenberg Md NPPES

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

MR. WILLIAM MORRIS ISENBERG MD (NPI 1265497101) is an individual obstetrics & gynecology provider in Oakland, California, licensed in California (G77313) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1265497101

Entity TypeIndividualMale

Primary Taxonomy207V00000X

Provider Legal NameMR. WILLIAM MORRIS ISENBERGCredential: MD

Location Address365 HAWTHORNE AVE, SUITE 301Oakland, CA 94609

Mailing Address365 Hawthorne Ave, Suite 301Oakland, CA 94609 · (510) 893-1700 · Fax (510) 893-0110

Phone(510) 893-1700

Fax(510) 893-0110

Sole ProprietorNo

Enumeration DateApril 20, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1265497101 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians

Taxonomy Code207V00000X

License✔ Licensed in CA · G77313

Definition

An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.

365 HAWTHORNE AVE, Oakland, CA 94609

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