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

William S Kass, MD

Individual provider Ophthalmology Physician · NPI 1104386218

William S Kass, MD practises Ophthalmology in New York, New York. Graduated from Rutgers New Jersey Medical School in 2019, 7 years ago. Practices with Sajid Malik, MD PC, a 9-clinician group, works from 5 locations and accepts Medicare assignment. Licensed in New York.

Years since qualifying
7
Trained at
Rutgers New Jersey Medical School
Licensed in
NY
In the registry since
2019
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

188 Dyckman St
New York, NY 10040-1004
Phone: (646) 762-2020
Fax: (212) 567-2730
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (4)

  • 9620 Metropolitan Ave, Forest Hills, NY 11375-6625 — (718) 793-2020
  • 185 Woodbury Rd, Hicksville, NY 11801-3029 — (516) 681-3937
  • 20504 Hillside Ave, Hollis, NY 11423-2218 — (718) 464-2020
  • 9016 Elmhurst Ave, Jackson Heights, NY 11372-7936 — (718) 651-2200

Specialties & licences

Ophthalmology Physician (primary) Taxonomy 207W00000X · Licence 321874 (NY)

Record details

NPI number1104386218
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 24, 2019
Last updated in NPPESJune 27, 2023
Certification dateJune 27, 2023

Medicare enrollment

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

Medicare specialtyOPHTHALMOLOGY
Medical schoolRUTGERS NEW JERSEY MEDICAL SCHOOL
Graduated 2019 (7 years in practice)
Group practice Sajid Malik, Md Pc — 9 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.

Cataract surgery 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 patients44
Services billed 149 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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 $45 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.

Colleagues at Sajid Malik, MD PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 9 clinicians in the practice; 6 are shown here.

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