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Physician Assistant

Carolyn S. Singh, PA

Works at hospitals in Alexandria, VA · Virginia

Summary

Carolyn S. Singh, PA is a physician assistant at 3261 Old Washington Rd, Suite 1020, Waldorf, MD 20602. Phone: (301) 868-4326. Accepts Medicare assignment. In 2024, Carolyn S. Singh had 12 Original Medicare patients and 23 services. NPI 1336925486. 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.

  • Specialty: Physician assistant
  • Address: 3261 Old Washington Rd, Suite 1020, Waldorf, MD 20602 · Directions (2 more locations)
  • Phone: (301) 868‑4326
  • Medicare: Accepts Medicare assignment
  • Hospital: Inova Mount Vernon Hospital
  • Group practice: Metropolitan Nephrology Associates PC
  • School: graduated 2023
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Carolyn S. Singh, 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 Carolyn S. Singh accept Medicare assignment?
Yes. Medicare's clinician data says Carolyn S. Singh 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 Carolyn S. Singh see?
In 2024, CMS data shows 12 Original Medicare patients and 23 services for Carolyn S. Singh. This counts Original Medicare only and measures volume, not quality.
What is Carolyn S. Singh's NPI number?
1336925486. 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 Carolyn S. Singh, 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 patients12
Services billed to Medicare23
Different services or procedures2
Participating Medicare providerYes
Average age of these patients79

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)12 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)11 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%
  • Chronic kidney disease75%

Hospitals where Carolyn S. Singh works

Medicare's Facility Affiliation Data lists Carolyn S. Singh 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 Carolyn S. Singh is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Carolyn S. Singh as a member of this group (CMS data updated October 2, 2026).

  • Metropolitan Nephrology Associates PC10 clinicians in the group

Specialties

Find other clinicians: Physician Assistant, Maryland →

Other physician assistants in Waldorf

Clinicians with the same Medicare primary specialty in Waldorf, MD — not a recommendation.

All physician assistants in Waldorf →

Other clinicians in Metropolitan Nephrology Associates PC

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

Clinician information

CredentialPA
Graduation year2023
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1336925486
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