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

Mr. William F Flader, MD

Individual provider Emergency Medicine Physician · NPI 1487678991

Mr. William F Flader, MD is an Emergency Medicine in Smithtown, New York. Qualified in 1981, 45 years ago. Practices with City Medical of Upper East Side PLLC, a 663-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
45
Licensed in
NY
In the registry since
2006
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

50 Route 25A
Smithtown, NY 11787-1348
Phone: (631) 862-3110
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 163266 (NY)

Record details

NPI number1487678991
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 27, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Group practice City Medical Of Upper East Side Pllc — 663 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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