Dr. Mark Stephen Lum
PSY.D. | Clinical Psychologist
1801 E Heim Ave, Suite 204, Orange
California, 92865-3020
714-282-9713 714-282-8016
Maps & DirectionsDr. Mark Stephen Lum is a Orange, California based psychologist who is specialized in Clinical Psychology. Active license number of Dr. Mark Stephen Lum is PSY13344 for Clinical Psychology in California. His current practice location is 1801 E Heim Ave, Suite 204, Orange. Patients can reach him at 714-282-9713 or can fax him at 714-282-8016. Dr. Mark Stephen Lum is PSY.D. in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1083648752.
Dr. Mark Stephen Lum is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.
Complete Profile:
Dr. Mark Stephen Lum speciality, credentials, practice address, contact phone number and fax are as below.
Patients can call on the below given phone number for appointment.
| Name: | Dr. Mark Stephen Lum |
| Specialization: | Clinical Psychology |
| Gender: | Male |
| Credentials: | PSY.D. |
| Practice Address: | 1801 E Heim Ave, Suite 204, Orange,
California, 92865-3020 |
| Phone: | 714-282-9713 |
| Fax: | 714-282-8016 |
Professional Identification Codes:
NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS).
NPI details are as mentioned below.
| NPI Number: | 1083648752 |
| NPI Enumeration Date: | 10 Jul, 2006 |
| NPI Last Update On: | 20 Sep, 2007 |
Medical Licenses:
Doctors can have one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. Mark Stephen Lum are as mentioned below.
| License Number | Specialization | State | Status | |
| PSY13344 | Clinical Psychology | California | Primary | |
Business Mailing Address:
Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned address.
| Address: | Dr. Mark Stephen Lum
Po Box 80736,
Rancho Santa Margarita, California |
| Zip: | 92688-0736 |
| Phone Number: | 949-713-9846 |
| Fax Number: | 949-713-9846 |
Patients can reach Dr. Mark Stephen Lum at
1801 E Heim Ave, Suite 204, Orange, California or can
call to book an appointment on 714-282-9713.
Comments/ Reviews:
Read all the reviews posted for Dr. Mark Stephen Lum below. You may also share your own experience with Dr. Mark Stephen Lum. Your feedback can help others make better decisions.
**
Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 08 December, 2025.