Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Dr. Rachel Occhiogrosso Abelman , MD

Internal Medicine - Hematology & Oncology โ€ข Boston, MA

Active NPI 1255821617 Individual Practitioner Female Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

55 Fruit St
Boston, MA 021142621

Call 6172319943 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

55 Fruit St

Boston, MA 021142621

Telephone 6172319943
Organization at the Same NPPES Address or Phone
Massachusetts General Hospital Facility NPI 1184613721

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Boston, MA. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 3 distinct group names: Brigham And Womens Physicians Organization Inc; Massachusetts General Physicians Organization Inc; The General Hospital Corporation. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Warren Alpert Medical School Of Brown University

Graduation Year

2018

Medicare patients

66 people with Original Medicare in 2024

Different Original Medicare patients in 2024; counts below 11 are hidden; this does not show availability or quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider, 2024.

Medicare-allowed amount

About $16,261 in 2024

The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.

What this does not show: Medicare-allowed amount

This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

Paid by Medicare

About $12,956 in 2024

The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.

What this does not show: Paid by Medicare

This is not the clinician's income and not a measure of quality.

Source: CMS, Medicare Physician & Other Practitioners โ€“ by Provider and Service, 2024.

30-day fills

96 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$280,859 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers โ€“ by Provider and Drug, 2024.

Open Payments general payments, program year 2024

All general payments: $179.02 across 4 records.

By nature of payment

  • Education: $99.99 across 1 record.
  • Food and Beverage: $79.03 across 3 records.

Reporting-company totals

  • Pfizer Inc.: $99.99 across 1 record.
  • Novartis Pharmaceuticals Corporation: $47.87 across 1 record.
  • Gilead Sciences, Inc.: $31.16 across 2 records.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2024 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

8 years (graduated 2018)

CMS Doctors and Clinicians data list 2018 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2018

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, โ€œDoes your provider accept Medicare as full payment?โ€

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Abelman has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Abelman as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Boston and Massachusetts

Billing and prescribing volume is not a quality rating.

Medicare Part B services

Fewer Medicare Part B services than 75% of clinicians listed under Internal Medicine - Hematology & Oncology in Boston, MA (2024, 146 clinicians with data). Median for this group: 399. Middle half: 194 to 757.

Fewer Medicare Part B services than 85% of clinicians listed under Internal Medicine - Hematology & Oncology in Massachusetts (2024, 287 clinicians with data). Median for this group: 586. Middle half: 294 to 928.

Medicare-allowed amount

A lower Medicare-allowed amount than 75% of clinicians listed under Internal Medicine - Hematology & Oncology in Boston, MA (2024, 146 clinicians with data). Median for this group: $45,574. Middle half: $21,997 to $81,747.

A lower Medicare-allowed amount than 85% of clinicians listed under Internal Medicine - Hematology & Oncology in Massachusetts (2024, 287 clinicians with data). Median for this group: $64,000. Middle half: $32,049 to $93,746.

Paid by Medicare

A lower Medicare payment amount than 75% of clinicians listed under Internal Medicine - Hematology & Oncology in Boston, MA (2024, 146 clinicians with data). Median for this group: $34,580. Middle half: $16,205 to $61,847.

A lower Medicare payment amount than 85% of clinicians listed under Internal Medicine - Hematology & Oncology in Massachusetts (2024, 287 clinicians with data). Median for this group: $47,819. Middle half: $24,824 to $71,249.

Medicare Part D prescriptions

Fewer Part D prescriptions than 70% of clinicians listed under Internal Medicine - Hematology & Oncology in Boston, MA (2024, 127 clinicians with data). Median for this group: 120. Middle half: 46 to 302.

Fewer Part D prescriptions than 80% of clinicians listed under Internal Medicine - Hematology & Oncology in Massachusetts (2024, 265 clinicians with data). Median for this group: 268. Middle half: 100 to 605.

Part D drug cost

Close to the middle for clinicians listed under Internal Medicine - Hematology & Oncology in Boston, MA (2024, 127 clinicians with data). Median for this group: $352,915. Middle half: $12,956 to $934,548.

A lower Part D drug cost than 60% of clinicians listed under Internal Medicine - Hematology & Oncology in Massachusetts (2024, 265 clinicians with data). Median for this group: $572,267. Middle half: $36,939 to $1,492,619.

235 active clinicians are listed under Internal Medicine - Hematology & Oncology with a practice address in Boston, MA (461 in Massachusetts).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Boston

49.8% of these 235 clinicians have the CMS telehealth indicator.

65.1% of these 235 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2024), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo ยท Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments ยท Program Year 2024

Program year 2024 (payments made January 1 โ€“ December 31, 2024): fewer than 11 records totaling $179.02.

Manufacturer Payment Nature Product Type Amount ($)
Pfizer Inc.
Education
In-kind items and services
โ€” General $99.99
Novartis Pharmaceuticals Corporation
Food and Beverage
In-kind items and services
KISQALI General $47.87
Gilead Sciences, Inc.
Food and Beverage
In-kind items and services
Trodelvy General $17.44
Gilead Sciences, Inc.
Food and Beverage
In-kind items and services
Trodelvy General $13.72

Source: CMS Open Payments, program year 2024, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ€“ by Provider and Service data, 2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.

HCPCS Code Services Patients Submitted Charge Medicare Allowed
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
61 31 $681.87 $151.80
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
42 18 $70.24 $17.34
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
20 18 $651.75 $163.64
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
19 19 $435.84 $98.73
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
11 11 $487.00 $102.17

Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits

Submitted charges are billed amounts, not a price quote for your visit.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D ยท Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Letrozole Letrozole 38 2,520 $782.07 20
Truqap Capivasertib 12 336 $280,076.76 โ€”

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-01-29
Internal Medicine - Hematology & Oncology Primary Specialty

NUCC Taxonomy Code: 207RH0003X

License # reported to NPPES MA 1017201

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.

Internal Medicine - Medical Oncology

NUCC Taxonomy Code: 207RX0202X

License # reported to NPPES MA 1017201

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Massachusetts Board of Registration in Medicine.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - HEMATOLOGY/ONCOLOGY

Medicare Enrollment ID

I20240710002979

Enrollment State Jurisdiction

MA

PECOS Control ID

6608126495

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Massachusetts General Physicians Organization Inc

243 Charles St, Boston, MA 021143002

Phone: 6172735699

The General Hospital Corporation

55 Fruit St, Boston, MA 021142621

Phone: 6177262000

Brigham And Womens Physicians Organization Inc

75 Francis St, Boston, MA 021156110

Phone: 6177325500

Massachusetts General Physicians Organization Inc

55 Fruit St, Boston, MA 021142696

Phone: 6177240287

Secondary Practice Locations

75 Francis St

Boston, MA 021156110

Phone: 6177325500

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

4 listed
Dr. Murat Anamur , MD

Internal Medicine - Medical Oncology

NPI 1487601100

Doctor of Medicine (M.D.)

Dr. Bennett Caughey , MD

Internal Medicine - Medical Oncology

NPI 1427410331

Doctor of Medicine (M.D.)

NPI 1356674287

Doctor of Osteopathic Medicine (D.O.)

Dr. Michael Pfeffer , MBBS

Internal Medicine - Hematology

NPI 1376074021

Bachelor of Medicine, Bachelor of Surgery (M.B.B.S.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

10 Historical Events
๐Ÿ“
Updated Business Mailing Address July 31, 2024

Registered at 55 FRUIT ST, BOSTON, MA 021142696 (Tel: 6177265130)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) July 31, 2024

Internal Medicine (license number reported to NPPES: MA 1017201)

๐Ÿ“
Updated Practice Location June 28, 2024

Registered at 55 FRUIT ST, BOSTON, MA 021142621 (Tel: 6172319943)

๐Ÿ‘ค
Provider Name / Credentials Updated June 28, 2024

Recorded as RACHEL ABELMAN, MD

โœ…
NPI Profile Active May 11, 2018

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) May 11, 2018

Registered at 75 FRANCIS ST, BOSTON, MA 021156106 (Tel: 6177326040)

๐Ÿ“
Business Mailing Address (Initial Record) May 11, 2018

Registered at 98 TOXTETH ST APT 6, BROOKLINE, MA 024466933 (Tel: 9145003986)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) May 11, 2018

Recorded as RACHEL OCCHIOGROSSO, MD

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) May 11, 2018

Student in an Organized Health Care Education/Training Program

๐ŸŸข
Initial NPI Registration & Enumeration May 11, 2018

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1255821617
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 11, 2018
Last Update: January 29, 2026
Sole Proprietor: No

Other Internal Medicine - Hematology & Oncology Specialists in Boston

All Internal Medicine - Hematology & Oncology Specialists in Boston

Mailing Address

55 Fruit St

Boston, MA 021142696

Phone: 6177265130

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.