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DR. PAUL HARRISON BROWN M.D.
NPI 1437361789
Psychiatry & Neurology - Psychiatry in Diamond Bar, CA

Active since May 07, 2007Opted out of Medicare · through Dec 23, 2027
750 N DIAMOND BAR BLVD, SUITE 212, DIAMOND BAR, CA 91765(909) 861-4663(909) 861-5283 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Paul Harrison Brown M.d. NPPES

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

DR. PAUL HARRISON BROWN M.D. (NPI 1437361789) is an individual psychiatry provider in Diamond Bar, California, licensed in California (A26502) and active in the NPI registry since May 2007. He has opted out of Medicare through December 23, 2027 and remains eligible to order and refer.

NPPES Registry Identity

NPI1437361789
Entity TypeIndividualMale
Primary Taxonomy2084P0800X
Provider Legal NameDR. PAUL HARRISON BROWNCredential: M.D.
Location Address750 N DIAMOND BAR BLVD, SUITE 212Diamond Bar, CA 91765-1023
Mailing Address2137 E Ocean BlvdNewport Beach, CA 92661-1522 · (949) 673-5786 · Fax (949) 673-5786
Phone(909) 861-4663
Fax(909) 861-5283
Sole ProprietorYes
Enumeration DateMay 7, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1437361789 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in CA · A26502
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.
Also ListedPsychiatry & Neurology · Child & Adolescent PsychiatryTaxonomy 2084P0804X · License A26502 (CA)
750 N DIAMOND BAR BLVD, Diamond Bar, CA 91765
Open in Google Maps ↗

Other Identifiers 1

OtherA265020CA · Medical License

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. Paul Harrison Brown 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 December 23, 2015 through December 23, 2027.

Opt-Out Effective DateDecember 23, 2015
Opt-Out In Effect ThroughDecember 23, 2027Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91765 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 6

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

JOHN TCHABOUKIAN DDS INC
Clinic/Center (Dental)
750 N DIAMOND BAR BLVD
DIAMOND BAR, CA 91765
Los Angeles County (909) 860-3111
DR. BARBARA ANNE AMMON PH.D.
Psychologist (Clinical)
750 N DIAMOND BAR BLVD, SUITE 204
DIAMOND BAR, CA 91765
Los Angeles County (909) 396-7715
DR JOHN S YUN, D.M.D.
Dentist (Periodontics)
750 N DIAMOND BAR BLVD, SUITE 112
DIAMOND BAR, CA 91765
Los Angeles County (909) 861-7277
LORINDHA F ARGUDO MD
Internal Medicine
750 N DIAMOND BAR BLVD
DIAMOND BAR, CA 91765
Los Angeles County (909) 861-2675
LUBNA ISHO DO
Family Medicine
750 N DIAMOND BAR BLVD
DIAMOND BAR, CA 91765
Los Angeles County (626) 331-6411
YVONNE RODRIGUEZ LAWSON MD
Family Medicine
750 N DIAMOND BAR BLVD
DIAMOND BAR, CA 91765
Los Angeles County (626) 331-6411

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 Paul Brown's NPI number?

The NPI number for Paul Brown is 1437361789. It was assigned to this individual provider in the NPPES registry on May 7, 2007.

Where is Paul Brown located?

Paul Brown practices at 750 N Diamond Bar Blvd Suite 212, Diamond Bar, CA 91765. The listed phone number is (909) 861-4663.

What is Paul Brown's specialty?

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

Is Paul Brown enrolled in Medicare?

No. Paul Brown has opted out of Medicare through December 23, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Paul Brown was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.