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Internal Medicine

Nausheen Hassan, MD

Sees patients in Chelmsford, MA · Massachusetts

Summary

Dr. Nausheen Hassan, MD is an internal medicine doctor at 290 Littleton Rd, Unit 3, Chelmsford, MA 01824. Phone: (978) 685-2460. Accepts Medicare assignment. In 2024, Nausheen Hassan had 277 Original Medicare patients and 735 services. NPI 1114108966. Source: CMS National Downloadable File, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 290 Littleton Rd, Unit 3, Chelmsford, MA 01824 · Directions
  • Phone: (978) 685‑2460
  • Medicare: Accepts Medicare assignment
  • Group practice: New England Community Medical Services PLLC (+1 more)
  • Medical school: graduated 2001 (25 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Nausheen Hassan, 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 Nausheen Hassan accept Medicare assignment?
Yes. Medicare's clinician data says Nausheen Hassan 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 Nausheen Hassan see?
In 2024, CMS data shows 277 Original Medicare patients and 735 services for Nausheen Hassan. This counts Original Medicare only and measures volume, not quality.
What is Nausheen Hassan's NPI number?
1114108966. 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 Nausheen Hassan, 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 patients277
Services billed to Medicare735
Different services or procedures6
Participating Medicare providerYes
Average age of these patients83

Most frequent services

  1. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)377 services
  2. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)175 services
  3. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)81 services
  4. Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)45 services
  5. Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes (99305)41 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%
  • Arthritis64%
  • Depression53%
  • Anxiety52%
  • Chronic kidney disease51%

Practice locations

Addresses where Nausheen Hassan is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nausheen Hassan as a member of these groups (CMS data updated October 2, 2026).

  • New England Community Medical Services PLLC55 clinicians in the group
  • Lawrence General Community Medical Service PLLC52 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Chelmsford

Clinicians with the same Medicare primary specialty in Chelmsford, MA — not a recommendation.

All internal medicine doctors in Chelmsford →

Other clinicians in New England Community Medical Services PLLC

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

Clinician information

CredentialMD
Graduation year2001 (25 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1114108966
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. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  2. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians