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

Dr. Ian John Sadler, PHD

Individual provider Clinical Psychologist · NPI 1992805097

Dr. Ian John Sadler, PHD is a Clinical Psychologist in New York, New York. Graduated from University of Florida College of Medicine in 1999, 27 years ago. Practices with Trustees of Columbia University in the City of New York, a 2,250-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
27
Trained at
University of Florida College of Medicine
Licensed in
NY
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

710 W 168th St Neurological INSTITUTE-12TH Fl
New York, NY 10032-3726
Phone: (212) 305-9758
Fax: (212) 342-1699
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 021935-1 (NY)

Record details

NPI number1992805097
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedSeptember 25, 2006
Last updated in NPPESMarch 2, 2017

Medicare enrollment

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

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolUNIVERSITY OF FLORIDA COLLEGE OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice Trustees Of Columbia University In The City Of New York — 2250 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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 patients48
Services billed 316 a service is one billed item, such as a visit, a test or a procedure
Average patient age71

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.

Colleagues at Trustees of Columbia University in the City of New York

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2250 clinicians in the practice; 12 are shown here.

Other providers in New York