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Dr. Natalie Sinclair

Hematology & Oncology (Hematology & Oncology Physician)

20 Prospect St
Milford, MA 01757

Who else practices at this address →

Worcester County includes primary care (3% of residents) and mental health (11% of residents) shortage areas. About shortage areas

Call (508) 488-3708

  • Medicare participating

At a glance

Years since graduation
21
In the NPI registry since
2007
Medicare patients seen, 2024
418

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

  • 2005Medical school: University of Vermont College of Medicine
  • 2007Registered 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

  • Hematology & Oncology Physician primary
    MA license 254223
  • Internal Medicine Physician
    VT license 060-000-3432

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

Map: Hematology & Oncology 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
418
Services billed
770
Patients’ average age
75
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes613319
New patient office or other outpatient visit, 60-74 minutes5555
Telephone medical discussion with physician, 11-20 minutes4537
Established patient office or other outpatient visit, 20-29 minutes3130
Established patient office or other outpatient visit, 40-54 minutes1615
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes1611
Telephone medical discussion with physician, 21-30 minutes1111

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.

Industry-funded research

Named as a principal investigator on 2 industry-funded studies in 2025, from 2 companies. The companies reported $5,621 in research payments for these studies, mostly to the institutions running them.

From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.

Other Hematology & Oncology clinicians in Milford

Sources

NPI registry (CMS NPPES, November 2026; record last updated September 11, 2013), 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 1740315654. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.