Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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John L Herzog Sr., MD

Individual provider Cardiovascular Disease Physician · NPI 1093734949

John L Herzog Sr., MD is a Cardiovascular Disease (Cardiology) in Greenville, Mississippi. Graduated from University of Mississippi School of Medicine in 1981, 45 years ago. Practices with Delta Medical Group, a 48-clinician group. Licensed in Mississippi.

Years since qualifying
45
Trained at
University of Mississippi School of Medicine
Licensed in
MS
In the registry since
2006
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

1421 E Union St
Greenville, MS 38703-3247
Phone: (662) 335-0183
Fax: (662) 335-7184
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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 09800 (MS)

Record details

NPI number1093734949
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 19, 2006
Last updated in NPPESAugust 21, 2020
Certification dateAugust 21, 2020
Mailing addressPo Box 5368, Greenville, MS 38704-5368

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MISSISSIPPI SCHOOL OF MEDICINE
Graduated 1981 (45 years in practice)
Group practice Delta Medical Group — 48 clinicians
Accepts Medicare assignment Not indicated
Practice locations6 on file with Medicare

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