Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Jonathan R Mallen, MD

Individual provider Sports Medicine (Orthopaedic Surgery) Physician · NPI 1588663140

Jonathan R Mallen, MD practises Orthopedic Surgery in Rockville Centre, New York. Graduated from New York Medical College in 1998, 28 years ago. Practices with South Island Orthopedics PC, a 7-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
28
Trained at
New York Medical College
Licensed in
NY
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

36 Lincoln Ave
Rockville Centre, NY 11570-5768 Not confirmed with CMS for 12 years — call before visiting
Phone: (516) 536-2800
Fax: (516) 302-8182
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Sports Medicine (Orthopaedic Surgery) Physician (primary) Taxonomy 207XX0005X · Licence 217086 (NY)

Record details

NPI number1588663140
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 18, 2005
Last updated in NPPESNovember 13, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolNEW YORK MEDICAL COLLEGE
Graduated 1998 (28 years in practice)
Group practice South Island Orthopedics Pc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Lower limb (leg) arthroscopy (minimally invasive joint repair) 16 times · 89th percentile
Knee replacement 12 times · 39th percentile
Hip replacement 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients563
Services billed 11,153 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $64 2 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • North Shore University Hospital Hospital · Manhasset, NY
  • Plainview Hospital Hospital · Plainview, NY
  • Mount Sinai South Nassau Hospital · Oceanside, NY
  • North Shore Home Care Chha Home health agency · Westbury, NY
  • Peconic Bay Homehealth Services Home health agency · Riverhead, NY

Colleagues at South Island Orthopedics PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 7 clinicians in the practice; 4 are shown here.

Other providers in Rockville Centre