Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Healthcare Providers & Facilities in Commack, NY

Public healthcare directory of 1,348 individual practitioners and 315 healthcare facilities located in Commack, New York.

1,348 Practitioners
315 Facilities
141 Specialties

Medical Specialties in Commack

Select a specialty to view practitioner listings, practice locations, and qualifications.

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All Specialties in Commack

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 129 more with at least one listed practitioner. Number of practitioners in brackets.

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Providers

Pharmacy Service Providers

Podiatric Medicine & Surgery Service Providers

Respiratory, Developmental, Rehabilitative and Restorative Service Providers

Speech, Language and Hearing Service Providers

Technologists, Technicians & Other Technical Service Providers

Featured Healthcare Providers in Commack

Practitioner profiles in Commack, NY with recent CMS Medicare or Open Payments data.

Dr. Michael Palmieri , DDS

Dentist - General Practice

6080 Jericho Tpke, Commack, NY
Phone: 6314991212
NPI 1568881241

Sarah Ray

Nurse Practitioner - Primary Care

Medicare Accepted
650 Commack Rd, Commack, NY
Phone: 6312126020
NPI 1841777307
Medicare Accepted
356 Veteran Memorial Highway, Suite 5, Commack, NY
Phone: 6312097080
NPI 1831543446

Jennifer Dennehy , APN

Nurse Practitioner - Adult Health

Medicare Accepted
650 Commack Rd, Commack, NY
Phone: 6316234100
NPI 1689125478

Nicoleta Koschack , NP

Nurse Practitioner - Adult Health

500 Commack Rd, Commack, NY
Phone: 6316380736
NPI 1780051482

Dr. Stephen Kaplan , PhD

Psychologist - Clinical

Medicare Accepted
35 Crooked Hill Rd Ste 102, Commack, NY
Phone: 6316437904
NPI 1649208752

Largest Cities in New York

Other New York cities with a full directory, by the number of active practitioners listed in NPPES.

How Commack compares with the U.S.

Compared with the U.S. as a whole, Commack has more Specialists (19.3x), clinicians in Nurse Practitioner - Adult Health (10.1x) and clinicians in Psychologist - Clinical (4.1x) per 100,000 residents.

Commack has 3,687 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

86% of clinicians in Commack listed in the CMS Medicare file (233 of 271) accept Medicare assignment. That is similar to the New York share of 88%.

Only 271 of 1,348 active clinicians in Commack appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

31% of clinicians in Commack listed in the CMS Medicare file (83 of 271) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the New York share of 24%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Commack CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Commack, NY

Source: CMS public datasets

Healthcare operations in Commack, NY encompass 1,348 active individual practitioners and 315 registered medical facilities across 141 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Commack accounts for $39.8 Million across 129,884 prescription claims. 435 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.6 Million in payments reported by companies to 176 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $39.8M 129,884 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.6M 176 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 435 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $21.5M 451,479 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Commack

Part B Lab & Imaging Eligible: 297
Durable Medical Equipment (DME): 315
Home Health Agency (HHA): 205
Source: CMS Order and Referring