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

Dr. Douglas P Harr, MD

Individual provider Internal Medicine Physician · NPI 1538466073

Dr. Douglas P Harr, MD is an Internal Medicine Physician in Quakertown, Pennsylvania. Practices as a sole proprietor. Licensed in Pennsylvania.

Licensed in
PA
In the registry since
2011
Specialties on file
3
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

2305 Mill Hill Rd
Quakertown, PA 18951-3904
Phone: (215) 536-2711
Fax: (215) 536-2711
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 MD015556E (PA)
Geriatric Medicine (Internal Medicine) Physician Taxonomy 207RG0300X · Licence MD015556E (PA)
Nuclear Medicine Physician Taxonomy 207U00000X · Licence MD015556E (PA)

Record details

NPI number1538466073
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 18, 2011
Last updated in NPPESFebruary 18, 2011

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