John Barker, MD
Orthopedic Surgery · Gastroenterology · Psychiatry
20+ years in practiceNPI: 1063486975Licensed in SD
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Credentials & Recognition
Specialties
Orthopedic SurgeryGastroenterologyPsychiatry
NPI sub-specialties
Internal Medicine, Gastroenterology207RG0100X
Practice Signals
Editorial signals beyond credentials. Patient transparency over opacity. See methodology.
Mid-Level (PA/NP) Use
Doctor-led visits
Years in Practice
20+ years
Estimated from NPI enumeration date
Featured in PBCMMG Rankings
Other Psychiatry Doctors near California
View all →Frequently Asked Questions about Dr. John Barker, MD
Where does Dr. John Barker, MD practice?+
Dr. John Barker, MD practices in California, CA. 1001 E. 21ST ST., STE. 501
SIOUX FALLS, SD 57105.
What is Dr. John Barker, MD's phone number?+
Dr. John Barker, MD's practice phone is 605-322-8630. Office contact information is verified on the PBCMMG profile.
What does Dr. John Barker, MD specialize in?+
Dr. John Barker, MD's primary specialty is Psychiatry, with additional focus on Orthopedic Surgery, Gastroenterology.
Is Dr. John Barker, MD board certified?+
Board certification status for Dr. John Barker, MD has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. John Barker, MD been practicing?+
Dr. John Barker, MD has been in active practice for 20+ years, based on NPI enumeration and state licensing records.
What is Dr. John Barker, MD's NPI number?+
Dr. John Barker, MD's National Provider Identifier (NPI) is 1063486975, registered in the federal NPPES registry.
Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards
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