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 patients | 412 |
|---|---|
| Services billed to Medicare | 88,591 |
| Different services or procedures | 36 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Injection, tocilizumab, 1 mg (J3262)31,666 services
- Injection, golimumab, 1 mg, for intravenous use (J1602)13,650 services
- 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
- Injection, denosumab, 1 mg (J0897)6,360 services
- 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.
- Staten Island University HospitalStaten Island, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330160
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
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in New York
Clinicians with the same Medicare primary specialty in New York — not a recommendation.
Other clinicians in Rheumatology Associates of Li LLP
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Rutgers New Jersey Medical School |
| Graduation year | 2002 (24 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376755710 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians