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

Douglass Monroe Harmon Jr., DO

Individual provider Addiction Medicine (Family Medicine) Physician · NPI 1720191919

Douglass Monroe Harmon Jr., DO is an Addiction Medicine (Family Medicine) Physician in Washington, Pennsylvania. Licensed in Pennsylvania. Registered with an NPI since 2006.

Licensed in
PA
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

See every abbreviation used in this directory →

Practice location Address checks out

997 N Main St
Washington, PA 15301-2807
Phone: (412) 502-5124
Fax: (855) 476-8911
Show map & directions

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

Specialties & licences

Addiction Medicine (Family Medicine) Physician (primary) Taxonomy 207QA0401X · Licence OS013439 (PA)

Record details

NPI number1720191919
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 15, 2006
Last updated in NPPESSeptember 27, 2024
Certification dateSeptember 27, 2024
Mailing address1505 Fox Chase Dr, Sewickley, PA 15143-8611

Other providers in Washington