Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Gregory Allen St John, MD

Individual provider Interventional Cardiology Physician · NPI 1124023056

Dr. Gregory Allen St John, MD is a Cardiovascular Disease (Cardiology) in Hot Springs, Arkansas. Graduated from University of Arkansas College of Medicine in 1990, 36 years ago. Practices with National Park Cardiology Services LLC, a 7-clinician group and accepts Medicare assignment. Licensed in Arkansas.

Years since qualifying
36
Trained at
University of Arkansas College of Medicine
Licensed in
AR
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

130 Medical Park Pl
Hot Springs, AR 71901-8051
Phone: (501) 625-3400
Fax: (501) 625-3402
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence C-7977 (AR)
Interventional Cardiology Physician Taxonomy 207RI0011X · Licence C-7977 (AR)

Record details

NPI number1124023056
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 16, 2005
Last updated in NPPESJanuary 27, 2015

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF ARKANSAS COLLEGE OF MEDICINE
Graduated 1990 (36 years in practice)
Group practice National Park Cardiology Services Llc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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