Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MR. RICHARD MARK BIEBUYCK M.D.
NPI 1770521734
Psychiatry & Neurology - Psychiatry in Glendora, CA

Q: What is Richard Biebuyck's NPI number?

The NPI number for Richard Biebuyck is 1770521734. It was assigned to this individual provider in the NPPES registry on June 3, 2006.

Q: What is Richard Biebuyck's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Richard Biebuyck was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 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.

Active since June 03, 2006

415 W ROUTE 66, # 202, GLENDORA, CA 91740(626) 963-4467(626) 963-9543 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

On this page

About Mr. Richard Mark Biebuyck M.d. NPPES

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

MR. RICHARD MARK BIEBUYCK M.D. (NPI 1770521734) is an individual psychiatry provider in Glendora, California, licensed in California (A78684) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1770521734

Entity TypeIndividualMale

Primary Taxonomy2084P0800X

Provider Legal NameMR. RICHARD MARK BIEBUYCKCredential: M.D.

Location Address415 W ROUTE 66, # 202Glendora, CA 91740-4335

Mailing Address415 W Route 66, # 202Glendora, CA 91740-4335 · (626) 963-4467 · Fax (626) 963-9543

Phone(626) 963-4467

Fax(626) 963-9543

Sole ProprietorNo

Enumeration DateJune 3, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1770521734 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians

Taxonomy Code2084P0800X

License✔ Licensed in CA · A78684

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.

415 W ROUTE 66, Glendora, CA 91740

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Other Identifiers 1

Medicaid00A786840CA

Other Providers at the Same Location NPPES 16

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

DR. MAGGIE J ATEIA PSY.D.

Psychologist (Clinical)

415 W ROUTE 66, SUITE 202
GLENDORA, CA 91740

Los Angeles County (626) 524-6685

JOHN PATRICK CULLEN MFT

Marriage & Family Therapist

415 W ROUTE 66, 202
GLENDORA, CA 91740

Los Angeles County (626) 963-4467

DR. CLARENCE M LEUNG PHD

Psychologist (Clinical)

415 W ROUTE 66, SUITE 202
GLENDORA, CA 91740

Los Angeles County (626) 963-4467

DONALD L UNRUH PHD

Psychologist (Clinical)

415 W ROUTE 66, 202
GLENDORA, CA 91740

Los Angeles County (626) 963-4467

DR. TAGHRID RAGHEB SIDHOM M.D.

Psychiatry & Neurology (Psychiatry)

415 W ROUTE 66, 202
GLENDORA, CA 91740

Los Angeles County (626) 963-4467

DR. -RAFIK R GIRGIS M.D.

Family Medicine

415 W ROUTE 66, SUITE 201
GLENDORA, CA 91740

Los Angeles County (626) 963-0253

PIEDAD CASTRILLON L.M.F.T.

Marriage & Family Therapist

415 W ROUTE 66
GLENDORA, CA 91740

Los Angeles County (626) 963-4467

GHADA OTHMAN AL-ASADI MD

Psychiatry & Neurology (Psychiatry)

415 W ROUTE 66, STE 202
GLENDORA, CA 91740

Los Angeles County (626) 963-4467

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 Richard Biebuyck's NPI number?

The NPI number for Richard Biebuyck is 1770521734. It was assigned to this individual provider in the NPPES registry on June 3, 2006.

Where is Richard Biebuyck located?

Richard Biebuyck practices at 415 W Route 66 # 202, Glendora, CA 91740. The listed phone number is (626) 963-4467.

What is Richard Biebuyck'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 Richard Biebuyck was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 42 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.