Marc J. Messineo, MD

Medicare activity in 2024

Official CMS public-use data for Marc J. Messineo, 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. Test for allergy using allergenic extract (95004)1,300 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)605 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)233 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)220 services
5. Annual depression screening, 5 to 15 minutes (G0444)211 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 cholesterol75%
• High blood pressure72%
• Arthritis45%
• Ischemic heart disease35%
• Diabetes29%
• Anxiety23%

Hospitals where Marc J. Messineo works

Medicare's Facility Affiliation Data lists Marc J. Messineo 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.

• Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 330286
• North Shore University HospitalManhasset, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330106

Practice locations

Addresses where Marc J. Messineo is enrolled with Medicare (CMS data updated October 2, 2026).

• 200 W Main St, Suite A103Babylon, NY 11702 (631) 893‑5510

Group practices

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

• Square Care Medical Group LLP71 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in New York →

Other family doctors in Babylon

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

• Marina Andrianova, MD
• Mohammad N. Mazid, MD
• Christopher J. Berard, DO

All family doctors in Babylon →

Other clinicians in Square Care Medical Group LLP

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

• Sara P. Valentino-Smith, DO
• Jeanine K. Morris-Rush, MD
• Jerry G. Ninia, MD
• Gilad A. Greenberg, MD
• Stacey J. Digiacomo, PA
• Christine Melgar, 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