Psychiatry Clinic

Mark A Welch Do, Inc

10737 Laurel St, Suite 230, Rancho Cucamonga, California, 91730-3837

About Mark A Welch Do, Inc

Mark A Welch Do, Inc is a psychiatry clinic located in Rancho Cucamonga, California. The clinic is located at 10737 Laurel St, Suite 230, Rancho Cucamonga, CA and can be reached at 909-989-5556. The authorized official for Mark A Welch Do, Inc is Dr. Mark Arnold Welch, who serves as the clinic’s Doctor. He/She can be contacted at 951-966-5802. The clinic’s primary license number in California is 2OA8950 (Psychiatry) .
Mark A Welch Do, Inc Clinic 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.

Clinic Information

Mark A Welch Do, Inc Clinic's specialty, address, contact phone number and fax are as below. Patients can contact the clinic at the given phone number for appointments.

Clinic Name Mark A Welch Do, Inc
Specialization Psychiatry
Practice Address 10737 Laurel St, Suite 230
Rancho Cucamonga, CA - 91730-3837
Fax 909-989-5558

Authorized/Official Person Profile

Officially authorized person to contact for any management issues or complaints for this clinic are as below. Person's position and contact details are also mentioned below.

Name Dr. Mark Arnold Welch
Position Doctor
Contact Number 951-966-5802

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1770031312
NPI Enumeration Date: 12 Sep, 2016
NPI Last Update On: 12 Sep, 2016

Medical Licenses

Organizations can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Mark A Welch Do, Inc are as mentioned below.
License NumberSpecializationStateStatus
2OA8950Psychiatry CaliforniaPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Mark A Welch Do, Inc
10737 Laurel St, Suite 230
Rancho Cucamonga, CA - 91730-3837
Phone: 909-989-5556
Fax: 909-989-5558

Book an Appointment with Mark A Welch Do, Inc

To schedule an appointment, contact Mark A Welch Do, Inc at 10737 Laurel St, Suite 230, Rancho Cucamonga, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mark A Welch Do, Inc clinic:

Mark A Welch Do, Inc is a psychiatry clinic specializing in Psychiatry.

Mark A Welch Do, Inc is located at 10737 Laurel St, Suite 230, Rancho Cucamonga, California 91730-3837.

Patients can contact Mark A Welch Do, Inc at 909-989-5556 for inquiries about its services and appointments.

Please contact Mark A Welch Do, Inc directly to inquire about new-patient availability and appointment options.
* Availability may change.

Mark A Welch Do, Inc 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.

Patients can contact Mark A Welch Do, Inc at 909-989-5556 to inquire about appointments, consultation requirements and available services.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.