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MARK A WELCH DO, INC
NPI 1770031312
Psychiatry & Neurology - Psychiatry in Rancho Cucamonga, CA

Active since September 12, 2016
10737 LAUREL ST, SUITE 230, RANCHO CUCAMONGA, CA 91730(909) 989-5556(909) 989-5558 Get Directions Write a Review

NPPES record last updated: September 12, 2016. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mark A Welch Do, Inc NPPES

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

MARK A WELCH DO, INC (NPI 1770031312) is a healthcare organization registered as a psychiatry in Rancho Cucamonga, California and active in the NPI registry since September 2016. The organization lists Mark Arnold Welch, Doctor, as its authorized official.

NPPES Registry Identity

NPI1770031312
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameMARK A WELCH DO, INC
Location Address10737 LAUREL ST, SUITE 230Rancho Cucamonga, CA 91730-3837
Mailing Address10737 Laurel St, Suite 230Rancho Cucamonga, CA 91730-3837 · (909) 989-5556 · Fax (909) 989-5558
Phone(909) 989-5556
Fax(909) 989-5558
Organization SubpartNo
Authorized OfficialMark Arnold WelchDoctor · (951) 966-5802
Enumeration DateSeptember 12, 2016
✔ NPI 1770031312 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 · 2OA8950
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.
10737 LAUREL ST, Rancho Cucamonga, CA 91730
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES

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

MRS. ROSE THERESA ANDERSON R.N., MSN, PMHNP-BC
Registered Nurse (Psychiatric/Mental Health, Adult)
10737 LAUREL ST
RANCHO CUCAMONGA, CA 91730
San Bernardino County (909) 262-0300

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 Mark A Welch Do, Inc's NPI number?

The NPI number for Mark A Welch Do, Inc is 1770031312. It was assigned to this organization in the NPPES registry on September 12, 2016.

Where is Mark A Welch Do, Inc located?

Mark A Welch Do, Inc is located at 10737 Laurel St Suite 230, Rancho Cucamonga, CA 91730. The listed phone number is (909) 989-5556.

What is Mark A Welch Do, Inc'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 Mark A Welch Do, Inc was last updated on September 12, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 years 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.