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DR. JEFFREY MILLEGAN MD, MPH
NPI 1831251719
Psychiatry & Neurology - Psychiatry in Oakland, CA

Active since December 15, 2006
1300 CLAY ST, OAKLAND, CA 94612(510) 752-1075 Get Directions Write a Review

NPPES record last updated: June 17, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Jeffrey Millegan Md, Mph NPPES

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

DR. JEFFREY MILLEGAN MD, MPH (NPI 1831251719) is an individual psychiatry provider in Oakland, California, licensed in California (A84799) and active in the NPI registry since December 2006. He maintains a secondary practice location in Honolulu.

NPPES Registry Identity

NPI1831251719
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. JEFFREY MILLEGANCredential: MD, MPH
Location Address1300 CLAY STOakland, CA 94612-1425
Mailing Address26565 Agoura Rd Ste 200Calabasas, CA 91302-1990 · (844) 672-4863
Phone(510) 752-1075
Sole ProprietorNo
Enumeration DateDecember 15, 2006
Last NPPES UpdateJune 17, 2026
NPPES CertifiedJune 17, 2026
✔ NPI 1831251719 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Licenses✔ Licensed in CA · A84799✔ Licensed in HI · MD-22374
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1300 CLAY ST, Oakland, CA 94612
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Secondary Practice Location 1

Location 13288 Moanalua RdHonolulu, HI 96819-1469 · Phone (808) 432-0000

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. SANDRA HAMILTINE SMITH PHD
Psychologist (Clinical)
1300 CLAY ST, 600
OAKLAND, CA 94612
Alameda County (510) 562-7146
MECHEL HENRY MD INC
Physical Medicine & Rehabilitation
1300 CLAY ST, SUITE 600
OAKLAND, CA 94612
Alameda County (510) 222-5421
MS. MECHEL M HENRY M.D.
Physical Medicine & Rehabilitation
1300 CLAY ST, SUITE 600
OAKLAND, CA 94612
Alameda County (510) 222-5421

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 Jeffrey Millegan's NPI number?

The NPI number for Jeffrey Millegan is 1831251719. It was assigned to this individual provider in the NPPES registry on December 15, 2006.

Where is Jeffrey Millegan located?

Jeffrey Millegan practices at 1300 Clay St, Oakland, CA 94612. The listed phone number is (510) 752-1075.

What is Jeffrey Millegan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Jeffrey Millegan was last updated on June 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 days 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.