Psychiatrist | 23+ years experience

Stephen T. Penepacker, MD

2178 Johnson Ave, San Luis Obispo, California, 93401-4535

About Stephen T. Penepacker

Stephen T. Penepacker is a psychiatrist based in San Luis Obispo, California with 23 years of experience in Psychiatry. He completed his graduation from University Of Illinois College Of Med (chi/peor/rock/chm-urb) in 2003. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Stephen T. Penepacker is C180768 for Psychiatry in California. His current practice location is 2178 Johnson Ave, San Luis Obispo. Patients can contact him at 805-781-4700 or can fax him at 805-781-1232. Stephen T. Penepacker, MD, specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1336165125.

Stephen T. Penepacker 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.

Practice Information

Stephen T. Penepacker's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Stephen T. Penepacker
Specialization Psychiatry
Credentials MD
Accepts Medicare Assignment Yes
Experience 23+ years
Medical School Attended University Of Illinois College Of Med (chi/peor/rock/chm-urb)
Graduation Year 2003
Gender Male
Practice Address: 2178 Johnson Ave,
San Luis Obispo, CA - 93401-4535
Fax 805-781-1232

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.

PAC ID 5698719821
Enrollment ID I20070219000335
NPI Number1336165125
NPI Enumeration Date: 14 Jul, 2006
NPI Last Update On: 09 Dec, 2025

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Stephen T. Penepacker are as mentioned below.

License NumberSpecializationStateStatus
C180768Psychiatry CaliforniaPrimary

Group Practice

Group practices are practice of medicine by a group of healthcare professionals who share their premises and other resources. Following list states all the group name with which Stephen T. Penepacker is associated with along with the number of members in that group.
Organization Name (Group PAC ID) Members
County Of Dupage Department Of Health (4981695103)16

Mailing Address

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

Stephen T. Penepacker
2178 Johnson Ave,
San Luis Obispo, CA - 93401-4535
Phone: 805-781-4700
Fax: 805-781-1232

Book an Appointment with Stephen T. Penepacker

To schedule an appointment, contact Stephen T. Penepacker at 2178 Johnson Ave, San Luis Obispo, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Stephen T. Penepacker:

Stephen T. Penepacker is a psychiatrist specializing in Psychiatry. He 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.

Stephen T. Penepacker completed his education (MD) from University Of Illinois College Of Med (chi/peor/rock/chm-urb) in 2003.

Stephen T. Penepacker has approximately 23 years of experience in Psychiatry.

Yes, Stephen T. Penepacker accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Stephen T. Penepacker is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Stephen T. Penepacker practices at 2178 Johnson Ave, San Luis Obispo, California, 93401-4535.

To schedule an appointment with Stephen T. Penepacker, please contact the office at 805-781-4700.

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