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

George Knappenberger, MD

Individual provider Geriatric Medicine (Internal Medicine) Physician · NPI 1326016866

George Knappenberger, MD is a Geriatric Medicine (Internal Medicine) Physician in Warren, Ohio. Licensed in Ohio. Registered with an NPI since 2006.

Licensed in
OH
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

1350 E Market St
Warren, OH 44483-6608
Phone: (330) 841-9822
Fax: (330) 841-9281
Show map & directions

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

Specialties & licences

Geriatric Medicine (Internal Medicine) Physician (primary) Taxonomy 207RG0300X · Licence 35078786 (OH)

Record details

NPI number1326016866
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 10, 2006
Last updated in NPPESJuly 13, 2026
Mailing address1350 E Market St, Warren, OH 44483-6608