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Rheumatology

Maryann J. Lee, MD

Works at hospitals in Staten Island, NY · New York

Summary

Dr. Maryann J. Lee, MD is a rheumatologist at 554 E Main St, Riverhead, NY 11901. Accepts Medicare assignment. In 2024, Maryann J. Lee had 412 Original Medicare patients and 88,591 services. NPI 1376755710. 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: Rheumatologist (Medicare lists Rheumatology)
  • Address: 554 E Main St, Riverhead, NY 11901 · Directions
  • Medicare: Accepts Medicare assignment
  • Hospital: Staten Island University Hospital
  • Group practice: Rheumatology Associates of Li LLP
  • Medical school: Rutgers New Jersey Medical School · graduated 2002 (24 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Maryann J. Lee, 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 Maryann J. Lee accept Medicare assignment?
Yes. Medicare's clinician data says Maryann J. Lee 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 Maryann J. Lee see?
In 2024, CMS data shows 412 Original Medicare patients and 88,591 services for Maryann J. Lee. This counts Original Medicare only and measures volume, not quality.
What is Maryann J. Lee's NPI number?
1376755710. 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 Maryann J. Lee, 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 patients412
Services billed to Medicare88,591
Different services or procedures36
Participating Medicare providerYes
Average age of these patients71

Most frequent services

  1. Injection, tocilizumab, 1 mg (J3262)31,666 services
  2. Injection, golimumab, 1 mg, for intravenous use (J1602)13,650 services
  3. Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0129)11,953 services
  4. Injection, denosumab, 1 mg (J0897)6,360 services
  5. Injection, methylprednisolone acetate, 1 mg (J1010)2,351 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%
  • Arthritis75%
  • Diabetes48%
  • Ischemic heart disease32%
  • Osteoporosis31%

Hospitals where Maryann J. Lee works

Medicare's Facility Affiliation Data lists Maryann J. Lee 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 Maryann J. Lee is enrolled with Medicare (CMS data updated October 2, 2026).

  • 554 E Main StRiverhead, NY 11901

Group practices

Medicare enrollment lists Maryann J. Lee as a member of this group (CMS data updated October 2, 2026).

  • Rheumatology Associates of Li LLP10 clinicians in the group

Specialties

Find other Rheumatology doctors in New York →

Other rheumatologists in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

All rheumatologists in New York →

Other clinicians in Rheumatology Associates of Li LLP

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

Clinician information

CredentialMD
Medical schoolRutgers New Jersey Medical School
Graduation year2002 (24 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1376755710
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