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

Mark Leonard Herring, MD

Individual provider Internal Medicine Physician · NPI 1386766368

Mark Leonard Herring, MD is an Internal Medicine in Manitowoc, Wisconsin. Qualified in 1981, 45 years ago. Practices as a sole proprietor. Licensed in Wisconsin.

Years since qualifying
45
Licensed in
WI
In the registry since
2007
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

1355 Johnston Dr
Manitowoc, WI 54220-2131
Phone: (920) 682-2747
Fax: (920) 686-1498
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 24825 (WI)

Record details

NPI number1386766368
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 3, 2007
Last updated in NPPESJuly 8, 2007
Mailing address1355 Johnston Dr, Manitowoc, WI 54220-2131

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Accepts Medicare assignment Not indicated
Practice locations3 on file with Medicare

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