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Dr. Daniel S. Donovan JR., MD, MS

Endocrinology & Diabetes (Endocrinology, Diabetes & Metabolism Physician)

  • Medicare participating

At a glance

Years since graduation
40
In the NPI registry since
2006
Medicare patients seen, 2024
157

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1986Medical school: Icahn School of Medicine at Mount Sinai
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Endocrinology, Diabetes & Metabolism Physician primary
    NY license 173575

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Endocrinology & Diabetes per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Medicare patients and services

Medicare patients, 2024
157
Services billed
429
Patients’ average age
72
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 40-54 minutes237114
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes6915
New patient office or other outpatient visit, 60-74 minutes2727
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or2619
Established patient office or other outpatient visit, 30-39 minutes2221
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes1211

Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.

Medicare prescriptions

Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.

Payments from drug and device companies

In 2025, 2 companies reported 3 payments worth $131 in total to this clinician.

By type
Food and Beverage$131

From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.

Who received the most in New York →

Other Endocrinology & Diabetes clinicians in New York

Sources

NPI registry (CMS NPPES, November 2026; record last updated February 21, 2019), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1356423875. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.