Addiction Therapist

Mr. David A Sigler

1340 E Route 66 Ste 106, Glendora, California, 91740-3783

About Mr. David A Sigler

Mr. David A Sigler is a therapist based in Glendora, California who is specialized in Addiction (Substance Use Disorder) Counselor. Active license number of Mr. David A Sigler is 25358 for Addiction (Substance Use Disorder) Counselor in California. His current practice location is 1340 E Route 66 Ste 106, Glendora. Patients can reach him at 626-263-5543. Mr. David A Sigler NPI number (Unique professional ID assigned by NPPES) is 1447181128.

Mr. David A Sigler is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. He helps his clients by manage and overcome the psychological, emotional, and behavioral challenges related to substance use. Counselors also work closely with families and support systems to help them better understand their loved one’s illness. SUD counselors help to promote long-term sobriety, emotional stability, and overall mental wellness for both the individual and their family.

Practice Information

Mr. David A Sigler speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Mr. David A Sigler
Specialization Addiction (Substance Use Disorder) Counselor
Gender Male
Practice Address: 1340 E Route 66 Ste 106,
Glendora, CA - 91740-3783

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 Number1447181128
NPI Enumeration Date: 29 May, 2026
NPI Last Update On: 29 May, 2026

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Mr. David A Sigler are as mentioned below.

License NumberSpecializationStateStatus
25358Addiction (Substance Use Disorder) Counselor CaliforniaPrimary

Mailing Address

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

Mr. David A Sigler
325 Flagstaff St,
San Dimas, CA - 91773-1938
Phone: 562-336-9224

Book an Appointment with Mr. David A Sigler

To schedule an appointment, contact Mr. David A Sigler at 1340 E Route 66 Ste 106, Glendora, California or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Mr. David A Sigler:

David A Sigler is a therapist specializing in Addiction (Substance Use Disorder) Counselor. He is a licensed mental health therapist who help individuals struggling with addiction of alcohol, drug, or other substance use disorder. He helps his clients by manage and overcome the psychological, emotional, and behavioral challenges related to substance use. Counselors also work closely with families and support systems to help them better understand their loved one’s illness. SUD counselors help to promote long-term sobriety, emotional stability, and overall mental wellness for both the individual and their family.

Yes, David A Sigler is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

David A Sigler practices at 1340 E Route 66 Ste 106, Glendora, California, 91740-3783.

To schedule an appointment with David A Sigler, please contact the office at 626-263-5543.

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