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Internal Medicine

Julia R. Den Hartog, MD

Works at hospitals in Charlottesville, VA · Culpeper, VA · Virginia

Summary

Dr. Julia R. Den Hartog, MD is an internal medicine doctor at 661 University Ln, Suite A, Orange, VA 22960. Phone: (540) 661-3025. Accepts Medicare assignment. In 2024, Julia R. Den Hartog had 185 Original Medicare patients and 650 services. NPI 1750558870. 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 Julia R. Den Hartog, 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 Julia R. Den Hartog accept Medicare assignment?
Yes. Medicare's clinician data says Julia R. Den Hartog 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 Julia R. Den Hartog see?
In 2024, CMS data shows 185 Original Medicare patients and 650 services for Julia R. Den Hartog. This counts Original Medicare only and measures volume, not quality.
What is Julia R. Den Hartog's NPI number?
1750558870. 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 Julia R. Den Hartog, 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 patients185
Services billed to Medicare650
Different services or procedures10
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)265 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)188 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)83 services
  4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)82 services
  5. Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)16 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 pressure74%
  • High cholesterol52%
  • Arthritis37%
  • Diabetes33%
  • Ischemic heart disease23%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)18%

Hospitals where Julia R. Den Hartog works

Medicare's Facility Affiliation Data lists Julia R. Den Hartog 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 Julia R. Den Hartog is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Julia R. Den Hartog as a member of this group (CMS data updated October 2, 2026).

  • University of Virginia Physicians Group1,717 clinicians in the group

Specialties

Find other Internal Medicine doctors in Virginia →

Other internal medicine doctors in Orange

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

All internal medicine doctors in Orange →

Other clinicians in University of Virginia Physicians Group

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

Clinician information

CredentialMD
Medical schoolPerelman School Of Med At The University Of Pennsylvania
Graduation year2008 (18 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1750558870
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