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

Dr. John E Greifenkamp, MD

Individual provider Internal Medicine Physician · NPI 1396712980

Dr. John E Greifenkamp, MD is an Internal Medicine Physician in Longview, 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.

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Practice location Address checks out

707 Hollybrook Dr
Longview, TX 75605-2410
Phone: (903) 757-6042
Fax: (903) 232-8226
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 E0479 (TX)

Record details

NPI number1396712980
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 2, 2006
Last updated in NPPESJanuary 15, 2008
Mailing address707 Hollybrook Dr, Longview, TX 75605-2410

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