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

Mr. William Dallas Zelenty

Individual provider Orthopaedic Surgery of the Spine Physician · NPI 1831552173

Mr. William Dallas Zelenty practises Orthopedic Surgery in New York, New York. Graduated from New York University Medical College - Nlg in 2016, 10 years ago. Practices with Ny Society for the Relief of Ruptured and Crippled Maintaining, a 175-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
10
Trained at
New York University Medical College - Nlg
Licensed in
NY
In the registry since
2016
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Practice location Address checks out

535 E 70th St Dept OF
New York, NY 10021-4823
Phone: (212) 606-1000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery of the Spine Physician (primary) Taxonomy 207XS0117X · Licence 308490 (NY)

Record details

NPI number1831552173
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedApril 4, 2016
Last updated in NPPESJanuary 5, 2024
Certification dateJanuary 5, 2024

Medicare enrollment

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

Medicare specialtyORTHOPEDIC SURGERY
Medical schoolNEW YORK UNIVERSITY MEDICAL COLLEGE - NLG
Graduated 2016 (10 years in practice)
Group practice Ny Society For The Relief Of Ruptured And Crippled Maintaining — 175 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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.

Laminectomy or laminotomy (partial removal of spine bones) 195 times · 99th percentile
Spinal fusion 544 times · 99th percentile
Removal of tissue 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 patients417
Services billed 1,129 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Travel and Lodging $2,150 4 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $1,865 12 payments · a meal or drink at a meeting or visit, not a fee
Consulting Fee $843 2 payments

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.

Colleagues at Ny Society for the Relief of Ruptured and Crippled Maintaining

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 175 clinicians in the practice; 12 are shown here.

Other providers in New York