Justina Tam

Medicare activity in 2024

Official CMS public-use data for Justina Tam, 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.

Most frequent services

1. Ultrasound measurement of bladder capacity after voiding (51798)469 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)423 services
3. 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)249 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)232 services
5. Pelvic exam (99459)116 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%
• Arthritis62%
• Anxiety39%
• Diabetes36%
• Ischemic heart disease35%

Hospitals where Justina Tam works

Medicare's Facility Affiliation Data lists Justina Tam 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.

• Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330393

Practice locations

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

• 24 Research Way, Suite 500East Setauket, NY 11733 (631) 444‑6270
• P O Box, Suite 1554Stony Brook, NY 11790

Group practices

Medicare enrollment lists Justina Tam as a member of this group (CMS data updated October 2, 2026).

• Stony Brook Urology University Faculty Practice Corporation39 clinicians in the group

Specialties

• Urologyprimary

Find other Urology doctors in New York →

Other urologists in East Setauket

Clinicians with the same Medicare primary specialty in East Setauket, NY — not a recommendation.

• Rachel B. Davis, MD
• Altan K. Ilkay, MD
• Jeffrey Lee, MD
• Jason M. Kim, MD
• Frank S. Darras, MD
• Robert J. Wasnick, MD
• Howard L. Adler, MD
• Steven J. Weissbart, MD

All urologists in East Setauket →

Other clinicians in Stony Brook Urology University Faculty Practice Corporation

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

• Rachel B. Davis, MD
• Jeffrey Lee, MD
• Christina A. Romano, PA
• Steven J. Weissbart, MD
• Erin N. Henkes, NP
• Yefim R. Sheynkin, MD

Clinician information

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