Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Family Practice

Jennifer R. Derby, DO

Works at hospitals in Newport News, VA · Hampton, VA · Norfolk, VA … · Virginia

Summary

Dr. Jennifer R. Derby, DO is a family doctor at 1591 Port Republic Rd, Harrisonburg, VA 22801. Phone: (757) 838-6335. Accepts Medicare assignment. In 2024, Jennifer R. Derby had 467 Original Medicare patients and 2,533 services. NPI 1033290804. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Jennifer R. Derby, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Jennifer R. Derby accept Medicare assignment?
Yes. Medicare's clinician data says Jennifer R. Derby accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Jennifer R. Derby see?
In 2024, CMS data shows 467 Original Medicare patients and 2,533 services for Jennifer R. Derby. This counts Original Medicare only and measures volume, not quality.
What is Jennifer R. Derby's NPI number?
1033290804. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Jennifer R. Derby, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients467
Services billed to Medicare2,533
Different services or procedures56
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)861 services
  2. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)403 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)298 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)256 services
  5. Administration of influenza virus vaccine (G0008)89 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Arthritis47%
  • Diabetes30%
  • Anxiety27%
  • Chronic kidney disease25%

Hospitals where Jennifer R. Derby works

Medicare's Facility Affiliation Data lists Jennifer R. Derby at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

Practice locations

Addresses where Jennifer R. Derby is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Jennifer R. Derby as a member of these groups (CMS data updated October 2, 2026).

  • Sentara Medical Group1,408 clinicians in the group
  • Speech and Language Center PLLC12 clinicians in the group

Specialties

Find other Family Practice doctors in Virginia →

Other family doctors in Harrisonburg

Clinicians with the same Medicare primary specialty in Harrisonburg, VA — not a recommendation.

All family doctors in Harrisonburg →

Other clinicians in Sentara Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialDO
Graduation year2006 (20 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1033290804
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians