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Internal Medicine

Sandra M. Delistathis, MD

Works at hospitals in Washington, DC · District of Columbia

Summary

Dr. Sandra M. Delistathis, MD is an internal medicine doctor at 3301 New Mexico Ave NW, Suite 348, Washington, DC 20016. Phone: (202) 362-4467. May accept Medicare assignment. In 2024, Sandra M. Delistathis had 127 Original Medicare patients and 1,757 services. NPI 1023009974. 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 Sandra M. Delistathis, 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 Sandra M. Delistathis accept Medicare assignment?
Medicare's clinician data says Sandra M. Delistathis may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
How many Medicare patients does Sandra M. Delistathis see?
In 2024, CMS data shows 127 Original Medicare patients and 1,757 services for Sandra M. Delistathis. This counts Original Medicare only and measures volume, not quality.
What is Sandra M. Delistathis's NPI number?
1023009974. 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 Sandra M. Delistathis, 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 patients127
Services billed to Medicare1,757
Different services or procedures51
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Insertion of needle into vein for collection of blood sample (36415)153 services
  2. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)120 services
  3. Blood test, comprehensive group of blood chemicals (80053)113 services
  4. Manual urinalysis test with examination using microscope, automated (81001)102 services
  5. Measurement c-reactive protein for detection of infection or inflammation (86140)93 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 cholesterol72%
  • Arthritis45%
  • High blood pressure43%
  • Osteoporosis28%
  • Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)24%
  • Ischemic heart disease15%

Hospitals where Sandra M. Delistathis works

Medicare's Facility Affiliation Data lists Sandra M. Delistathis 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 Sandra M. Delistathis is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Sandra M. Delistathis as a member of this group (CMS data updated October 2, 2026).

  • Foxhall Internists, PC8 clinicians in the group

Specialties

Find other Internal Medicine doctors in District of Columbia →

Other internal medicine doctors in Washington

Clinicians with the same Medicare primary specialty in Washington, DC — not a recommendation.

All internal medicine doctors in Washington →

Other clinicians in Foxhall Internists, PC

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

Clinician information

CredentialMD
Medical schoolUniversity Of Maryland School Of Medicine
Graduation year2000 (26 years since medical school)
Gender (as listed)Female
Medicare assignmentMay accept for some services
TelehealthOffers telehealth services
NPI (National Provider Identifier)1023009974
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