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

Dr. Katharine Danielle Harper, MD

Individual provider Adult Reconstructive Orthopaedic Surgery Physician · NPI 1417399288

Dr. Katharine Danielle Harper, MD is an Orthopedic Surgery in Olney, Maryland. Qualified in 2013, 13 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
13
Licensed in
MD
In the registry since
2013
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

18101 Prince Philip Dr
Olney, MD 20832-1514
Phone: (301) 774-8958
Show map & directions

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

Specialties & licences

Adult Reconstructive Orthopaedic Surgery Physician (primary) Taxonomy 207XS0114X · Licence D0102716 (MD)

Record details

NPI number1417399288
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 22, 2013
Last updated in NPPESJanuary 8, 2026
Certification dateJanuary 8, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolOTHER
Graduated 2013 (13 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare