DR. KATHARINE DANIELLE HARPER M.D.
NPI 1417399288
Orthopaedic Surgery - Adult Reconstructive Orthopaedic Surgery in Olney, MD

Q: What is Katharine Harper's NPI number?

The NPI number for Katharine Harper is 1417399288. It was assigned to this individual provider in the NPPES registry on July 22, 2013.

Q: What is Katharine Harper's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Adult Reconstructive Orthopaedic Surgery, with taxonomy code 207XS0114X.

Q: When was this NPI record last updated?

The NPPES record for Katharine Harper was last updated on January 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since July 22, 2013PECOS EnrolledAccepts Medicare Assignment

18101 PRINCE PHILIP DR, OLNEY, MD 20832(301) 774-8958 Get Directions Write a Review

NPPES record last updated: January 8, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 8, 2026, May 18, 2020, Sep 21, 2018 (3 updates tracked since 2018).

On this page

About Dr. Katharine Danielle Harper M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KATHARINE DANIELLE HARPER M.D. (NPI 1417399288) is an individual adult reconstructive orthopaedic surgery provider in Olney, Maryland, licensed in Maryland (D0102716) and active in the NPI registry since July 2013. She is enrolled in Medicare PECOS, is affiliated with Medstar Montgomery Medical Center, and is a graduate of Other (2013).

NPPES Registry Identity

NPI1417399288

Entity TypeIndividualFemale

Primary Taxonomy207XS0114X

Provider Legal NameDR. KATHARINE DANIELLE HARPERCredential: M.D.

Location Address18101 PRINCE PHILIP DROlney, MD 20832-1514

Mailing Address18101 Prince Philip DrOlney, MD 20832-1514 · (301) 774-8958

Phone(301) 774-8958

Sole ProprietorYes

Medical School CMSOtherGraduated 2013

Enumeration DateJuly 22, 2013

Last NPPES UpdateJanuary 8, 20263 updates tracked since enumeration

NPPES CertifiedJanuary 8, 2026

✔ NPI 1417399288 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic Surgery · Adult Reconstructive Orthopaedic SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code207XS0114X

License✔ Licensed in MD · D0102716

Definition

Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, adult reconstructive orthopaedic surgeons deal with reconstructive procedures such as joint arthroplasty (i.e., hip and knee), osteotomy, arthroscopy, soft-tissue reconstruction, and a variety of other adult reconstructive surgical procedures.

18101 PRINCE PHILIP DR, Olney, MD 20832

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Katharine Danielle Harper M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3072031020

PECOS Enrollment IDI20250514001623

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Medstar Montgomery Medical Center

Acute Care Hospitals · Olney, MD

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number210018

Location18101 Prince Philip DriveOlney, MD 20832 · Montgomery County

Emergency services Birthing friendly

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BARBARA W. DAWSON CRNA

Nurse Anesthetist, Certified Registered

18101 PRINCE PHILIP DR
OLNEY, MD 20832

Montgomery County (301) 774-8610

MEDSTAR HEALTH ANESTHESIA SERVICES E, LLC

Anesthesiology

18101 PRINCE PHILIP DR
OLNEY, MD 20832

Montgomery County (301) 774-8882

AMANDA RAUDA TELLAWI MD

Obstetrics & Gynecology

18101 PRINCE PHILIP DR
OLNEY, MD 20832

Montgomery County (301) 570-7424

ANNA JAROMCZYK PRALL CRNA

Nurse Anesthetist, Certified Registered

18101 PRINCE PHILIP DR
OLNEY, MD 20832

Montgomery County (919) 323-6465

LAURIE HALL MS, RDN, LDN

Dietitian, Registered

18101 PRINCE PHILIP DR
OLNEY, MD 20832

Montgomery County (301) 774-8637

KUNWARDEEP SINGH SOHAL M.D.

Internal Medicine (Gastroenterology)

18101 PRINCE PHILIP DR
OLNEY, MD 20832

Montgomery County (301) 774-8882

PAUL ANDREW BURKE PA-C

Physician Assistant

18101 PRINCE PHILIP DR, MONTGOMERY GENERAL HOSPITAL
OLNEY, MD 20832

Montgomery County (301) 774-8900

VIVIANA ANDREA REYES N.P

Nurse Practitioner (Family)

18101 PRINCE PHILIP DR
OLNEY, MD 20832

Montgomery County (301) 774-8882

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Katharine Harper's NPI number?

The NPI number for Katharine Harper is 1417399288. It was assigned to this individual provider in the NPPES registry on July 22, 2013.

Where is Katharine Harper located?

Katharine Harper practices at 18101 Prince Philip Dr, Olney, MD 20832. The listed phone number is (301) 774-8958.

What is Katharine Harper's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Adult Reconstructive Orthopaedic Surgery, with taxonomy code 207XS0114X.

Is Katharine Harper enrolled in Medicare?

Yes. Katharine Harper is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Katharine Harper affiliated with any hospitals?

According to CMS data, Katharine Harper is affiliated with Medstar Montgomery Medical Center.

When was this NPI record last updated?

The NPPES record for Katharine Harper was last updated on January 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.