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Internal Medicine

Ross B. Isaacs, MD

Works at hospitals in Hampton, VA · Norfolk, VA · Williamsburg, VA · Virginia

Summary

Dr. Ross B. Isaacs, MD is an internal medicine doctor at 4374 New Town Ave, Suite 102, Williamsburg, VA 23188. Phone: (757) 259-6770. Accepts Medicare assignment. In 2024, Ross B. Isaacs had 305 Original Medicare patients and 1,413 services. NPI 1518096577. 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 Ross B. Isaacs, 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 Ross B. Isaacs accept Medicare assignment?
Yes. Medicare's clinician data says Ross B. Isaacs 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 Ross B. Isaacs see?
In 2024, CMS data shows 305 Original Medicare patients and 1,413 services for Ross B. Isaacs. This counts Original Medicare only and measures volume, not quality.
What is Ross B. Isaacs's NPI number?
1518096577. 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 Ross B. Isaacs, 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 patients305
Services billed to Medicare1,413
Different services or procedures25
Participating Medicare providerYes
Average age of these patients76

Most frequent services

  1. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)507 services
  2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)192 services
  3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)162 services
  4. 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)121 services
  5. Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)84 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%
  • Arthritis51%
  • Chronic kidney disease45%
  • Ischemic heart disease32%
  • Anxiety31%

Hospitals where Ross B. Isaacs works

Medicare's Facility Affiliation Data lists Ross B. Isaacs 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 Ross B. Isaacs is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Ross B. Isaacs as a member of this group (CMS data updated October 2, 2026).

  • Sentara Medical Group1,408 clinicians in the group

Specialties

Find other Internal Medicine doctors in Virginia →

Other internal medicine doctors in Williamsburg

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

All internal medicine doctors in Williamsburg →

Other clinicians in Sentara Medical Group

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

Clinician information

CredentialMD
Graduation year1985 (41 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1518096577
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