Psychiatrist | Geriatric Psychiatry

Dr. John Lester Schaeffer, D.O.

101 California St Ste 2710, San Francisco, California, 94111-5818

About Dr. John Lester Schaeffer

Dr. John Lester Schaeffer is a psychiatrist based in San Francisco, California who is specialized in Geriatric Psychiatry. Active license number of Dr. John Lester Schaeffer is 20A9536 for Child & Adolescent Psychiatry in California. His current practice location is 101 California St Ste 2710, San Francisco. Patients can contact him at 916-320-4222 or can fax him at 888-370-2829. Dr. John Lester Schaeffer, D.O., specializes in Geriatric Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1497743918.

Dr. John Lester Schaeffer has psychiatric expertise in prevention, evaluation, diagnosis and treatment of mental and emotional disorders in the elderly, and improvement of psychiatric care for healthy and ill elderly patients.

Practice Information

Dr. John Lester Schaeffer'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 Dr. John Lester Schaeffer
Specialization Geriatric Psychiatry
Credentials D.O.
Gender Male
Practice Address: 101 California St Ste 2710,
San Francisco, CA - 94111-5818
Fax 888-370-2829

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 Number1497743918
NPI Enumeration Date: 10 Oct, 2005
NPI Last Update On: 04 May, 2020

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 Dr. John Lester Schaeffer are as mentioned below.

License NumberSpecializationStateStatus
20A9536Child & Adolescent Psychiatry CaliforniaPrimary
20A9536Geriatric Psychiatry CaliforniaSecondary
38750Geriatric Psychiatry ColoradoSecondary
A-1243-03Psychiatry New MexicoSecondary
38750Psychiatry ColoradoSecondary
20A9536Psychiatry CaliforniaSecondary
38750Child & Adolescent Psychiatry ColoradoSecondary
A-1243-03Child & Adolescent Psychiatry New MexicoSecondary
A-1243-03Geriatric Psychiatry New MexicoSecondary

Other Medical Identifiers

Other professional identifiers associated with Dr. John Lester Schaeffer such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
FK534ZMedicaidCalifornia

Mailing Address

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

Dr. John Lester Schaeffer
101 California St Ste 2710,
San Francisco, CA - 94111-5818
Phone: 916-320-4222
Fax: 888-370-2829

Book an Appointment with Dr. John Lester Schaeffer

To schedule an appointment, contact Dr. John Lester Schaeffer at 101 California St Ste 2710, San Francisco, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. John Lester Schaeffer:

Dr. John Lester Schaeffer is a psychiatrist specializing in Child & Adolescent Psychiatry. He has done additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.

Yes, Dr. John Lester Schaeffer 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.

Dr. John Lester Schaeffer practices at 101 California St Ste 2710, San Francisco, California, 94111-5818.

To schedule an appointment with Dr. John Lester Schaeffer, please contact the office at 916-320-4222.

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