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Dr. Robert J. Soiffer, MD

Medical Oncology (Medical Oncology Physician)

  • Medicare participating

At a glance

Years since graduation
43
In the NPI registry since
2006
Medicare patients seen, 2024
154

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

  • 1983Medical school: New York University School of Medicine
  • 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

  • Medical Oncology Physician primary
    MA license 56125

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

Map: Medical 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
154
Services billed
421
Patients’ average age
70
Most frequent Medicare services, 2023
ServiceTimesPatients
Established patient office or other outpatient visit, 30-39 minutes238107
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes17637
Established patient office or other outpatient visit, 40-54 minutes8051
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes4015
Established patient office or other outpatient visit, 20-29 minutes2523
Hospital discharge day management, more than 30 minutes1716

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

Most prescribed drugs, Medicare Part D 2024
DrugPrescriptions
Jakafi (ruxolitinib phosphate)84
Sulfamethoxazole-Trimethoprim (sulfamethoxazole/trimethoprim)
Other prescribers in Boston, MA
65
Acyclovir
Other prescribers in Boston, MA
53
Rezurock (belumosudil mesylate)50
Ursodiol
Other prescribers in Boston, MA
26
Atovaquone20
Prednisone
Other prescribers in Boston, MA
19
Tacrolimus
Other prescribers in Boston, MA
15
Valacyclovir (valacyclovir hcl)
Other prescribers in Boston, MA
12

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, 4 companies reported 16 payments worth $23,861 in total to this clinician.

By company
E.r. Squibb & Sons, L.l.c.$21,150
National Marrow Donor Program$2,547
Jazz Pharmaceuticals Inc.$121
AstraZeneca Pharmaceuticals LP$43.25
By type
Consulting Fee$21,150
Travel and Lodging$1,710
Food and Beverage$882
Gift$75.00
Education$43.25

What the payments were for

Largest payments other than meals
DateCompanyWhat it was forAmount
Aug 22, 2025E.r. Squibb & Sons, L.l.c.
Aug 22, 2025
Consulting Fee$9,900
Apr 16, 2025E.r. Squibb & Sons, L.l.c.
Apr 16, 2025
Consulting Fee$5,700
Aug 22, 2025E.r. Squibb & Sons, L.l.c.
Aug 22, 2025
Consulting Fee$2,250
Apr 28, 2025E.r. Squibb & Sons, L.l.c.
Apr 28, 2025
Consulting Fee$1,800
Apr 28, 2025E.r. Squibb & Sons, L.l.c.
Apr 28, 2025
Consulting Fee$1,500
May 15, 2025National Marrow Donor Program
May 15, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$758
May 15, 2025National Marrow Donor Program
May 15, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$435
Sep 25, 2025National Marrow Donor Program
Sep 25, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$224
Oct 24, 2025National Marrow Donor Program
Oct 24, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$167
Jun 6, 2025National Marrow Donor Program
Jun 6, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$127
All 12 payments other than meals, newest first
All payments other than meals
DateCompanyWhat it was forAmount
Dec 1, 2025National Marrow Donor Program
Dec 1, 2025
Gift
in-kind
$75.00
Nov 25, 2025AstraZeneca Pharmaceuticals LP
Nov 25, 2025
Education
ENHERTU · Oncology · in-kind
Company’s descriptionJournal Article
$43.25
Oct 24, 2025National Marrow Donor Program
Oct 24, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$167
Sep 25, 2025National Marrow Donor Program
Sep 25, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$224
Aug 22, 2025E.r. Squibb & Sons, L.l.c.
Aug 22, 2025
Consulting Fee$9,900
Aug 22, 2025E.r. Squibb & Sons, L.l.c.
Aug 22, 2025
Consulting Fee$2,250
Jun 6, 2025National Marrow Donor Program
Jun 6, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$127
May 15, 2025National Marrow Donor Program
May 15, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$758
May 15, 2025National Marrow Donor Program
May 15, 2025
Travel and Lodging
travel to MINNEAPOLIS, MN · in-kind
$435
Apr 28, 2025E.r. Squibb & Sons, L.l.c.
Apr 28, 2025
Consulting Fee$1,800
Apr 28, 2025E.r. Squibb & Sons, L.l.c.
Apr 28, 2025
Consulting Fee$1,500
Apr 16, 2025E.r. Squibb & Sons, L.l.c.
Apr 16, 2025
Consulting Fee$5,700

Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.

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 Massachusetts →

Other Medical Oncology clinicians in Boston

Sources

NPI registry (CMS NPPES, November 2026; record last updated July 13, 2026), 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 1780653261. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.