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

Dr. John Frederick Wissinger, MD

Individual provider Internal Medicine Physician · NPI 1558326876

Dr. John Frederick Wissinger, MD is an Internal Medicine Physician in El Campo, Texas. Licensed in Texas. Registered with an NPI since 2006.

Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1602 N Mechanic St
El Campo, TX 77437-2640
Phone: (979) 543-2956
Fax: (979) 543-6756
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence G3918 (TX)

Record details

NPI number1558326876
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 19, 2006
Last updated in NPPESDecember 5, 2012
Mailing address2100 Regional Medical Dr, Wharton, TX 77488-9719

Other providers in El Campo