Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Darwin D Chen, MD

Individual provider Orthopaedic Surgery Physician · NPI 1295993517

Dr. Darwin D Chen, MD practises Orthopedic Surgery in New York, New York. Graduated from Columbia University College of Physicians and Surgeons in 2006, 20 years ago. Practices with Icahn School of Medicine at Mount Sinai, a 31-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
20
Trained at
Columbia University College of Physicians and Surgeons
Licensed in
NY
In the registry since
2008
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

5 E 98th St Fl 7
New York, NY 10029-6501
Phone: (212) 241-1924
Fax: (630) 682-8946
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence 248092 (NY)

Record details

NPI number1295993517
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 23, 2008
Last updated in NPPESJuly 3, 2023
Certification dateJuly 3, 2023

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolCOLUMBIA UNIVERSITY COLLEGE OF PHYSICIANS AND SURGEONS
Graduated 2006 (20 years in practice)
Group practice Icahn School Of Medicine At Mount Sinai — 31 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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.

Hip replacement 95 times · 97th percentile
Knee replacement 112 times · 94th percentile

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 patients726
Services billed 3,078 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Consulting Fee $92,813 24 payments
Travel and Lodging $15,342 39 payments · travel or lodging paid or reimbursed, such as to attend a conference
Debt forgiveness $7,275 1 payment · a debt a company cancelled
Food and Beverage $1,607 30 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.

  • Mount Sinai Hospital Hospital · New York, NY
  • St Charles Hospital Hospital · Port Jefferson, NY · listed as St Charles Hospital Corp
  • Mount Sinai South Nassau Hospital · Oceanside, NY
  • Mt. Sinai At Home Home health agency · Westbury, NY
  • Tender Loving Care, An Amedisys Company Home health agency · Medford, NY
  • Vns Of Ny Home Care Chha Home health agency · New York, NY

Colleagues at Icahn School of Medicine at Mount Sinai

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 31 clinicians in the practice; 12 are shown here.

Other providers in New York