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

Dr. John David Hammock, MD

Individual provider Internal Medicine Physician · NPI 1912082975

Dr. John David Hammock, MD is a Cardiovascular Disease (Cardiology) in Quincy, Illinois. Graduated from Southern Illinois University School of Medicine in 2002, 24 years ago. Practices with Blessing Hospital, a 413-clinician group and accepts Medicare assignment. Licensed in Illinois and Kentucky.

Years since qualifying
24
Trained at
Southern Illinois University School of Medicine
Licensed in
IL, KY
In the registry since
2006
Specialties on file
4
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

927 Broadway St Ste 200
Quincy, IL 62301-2719
Phone: (217) 224-6423
Fax: (217) 221-1344
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Cardiac Electrophysiology Physician (primary) Taxonomy 207RC0001X · Licence 036112658 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 40079 (KY)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence 036112658 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 40079 (KY)

Record details

NPI number1912082975
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 26, 2006
Last updated in NPPESNovember 27, 2023
Certification dateOctober 11, 2020
Mailing address927 Broadway St Ste 230, Quincy, IL 62301-2749

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesCARDIAC ELECTROPHYSIOLOGY, INTERNAL MEDICINE
Medical schoolSOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2002 (24 years in practice)
Group practice Blessing Hospital — 413 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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