DR. THOMAS NGOC PHAN M.D.
NPI 1740716687
Psychiatry & Neurology - Psychiatry in Costa Mesa, CA

Q: What is Thomas Phan's NPI number?

The NPI number for Thomas Phan is 1740716687. It was assigned to this individual provider in the NPPES registry on May 11, 2017.

Q: What is Thomas Phan's specialty?

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

Q: Is Thomas Phan enrolled in Medicare?

No. Thomas Phan has opted out of Medicare through February 19, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Q: When was this NPI record last updated?

The NPPES record for Thomas Phan was last updated on February 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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 May 11, 2017Opted out of Medicare · through Feb 19, 2028

1640 NEWPORT BLVD STE 110, COSTA MESA, CA 92627(925) 282-1778(415) 296-5299 Get Directions Write a Review

NPPES record last updated: February 17, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Feb 17, 2025, Dec 20, 2022, Jun 8, 2021 and 1 more (4 updates tracked since 2017).

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About Dr. Thomas Ngoc Phan M.d. NPPES

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

DR. THOMAS NGOC PHAN M.D. (NPI 1740716687) is an individual psychiatry provider in Costa Mesa, California, licensed in California (A170266) and active in the NPI registry since May 2017. He has opted out of Medicare through February 19, 2028, maintains a secondary practice location in Newport Beach, and is a graduate of Other (2017).

NPPES Registry Identity

NPI1740716687

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameDR. THOMAS NGOC PHANCredential: M.D.

Location Address1640 NEWPORT BLVD STE 110Costa Mesa, CA 92627-7762

Mailing Address1640 Newport Blvd Ste 110Costa Mesa, CA 92627-7762 · (925) 282-1778 · Fax (415) 296-5299

Phone(925) 282-1778

Fax(415) 296-5299

Sole ProprietorYes

Medical School CMSOtherGraduated 2017

Enumeration DateMay 11, 2017

Last NPPES UpdateFebruary 17, 20254 updates tracked since enumeration

NPPES CertifiedFebruary 17, 2025

✔ NPI 1740716687 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 · A170266✔ Licensed in TX · BP10060945

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.

1640 NEWPORT BLVD STE 110, Costa Mesa, CA 92627

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Secondary Practice Location 1

Location 1180 Newport Center Dr Ste 235Newport Beach, CA 92660-0903 · Phone (949) 999-4120

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Thomas Ngoc Phan M.d. has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 19, 2026 through February 19, 2028.

Opt-Out Effective DateFebruary 19, 2026

Opt-Out In Effect ThroughFebruary 19, 2028Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 17

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

EMILY ALICIA MAJANO LMFT

Marriage & Family Therapist