Independent US Healthcare Provider Directory & Public Medical Database Patient Guides

Clark S Cassone , MSN, FNP-BC

Nurse Practitioner โ€ข Boston, MA

Active NPI 1720335615 Individual Practitioner Male Practitioner Accepts Medicare assignment
Practice location in NPPES

55 Fruit St
Boston, MA 021142696

Call 6177249197 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 021142696

Telephone 6177249197
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 2 distinct additional practice-address records in Boston, MA; Seattle, WA. See the list

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

CMS Doctors and Clinicians lists 1 group name: 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

Graduation Year

2012

Medicare patients

64 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 $9,146 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 $7,280 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

54 standardized 30-day fills in 2017

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

$173,114 in 2017

The total cost of these prescriptions in 2017, 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, 2017.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $120.65 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

14 years (graduated 2012)

CMS Doctors and Clinicians data list 2012 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

2012

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

No telehealth indicator

CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.

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)

Clark Cassone 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 Clark Cassone 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 Nurse Practitioner in Boston, MA (2024, 352 clinicians with data). Median for this group: 215. Middle half: 102 to 369.

Fewer Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,536 clinicians with data). Median for this group: 293. Middle half: 113 to 625.

Medicare-allowed amount

A lower Medicare-allowed amount than 70% of clinicians listed under Nurse Practitioner in Boston, MA (2024, 352 clinicians with data). Median for this group: $19,004. Middle half: $8,880 to $34,097.

A lower Medicare-allowed amount than 75% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,536 clinicians with data). Median for this group: $24,187. Middle half: $9,751 to $49,233.

Paid by Medicare

A lower Medicare payment amount than 70% of clinicians listed under Nurse Practitioner in Boston, MA (2024, 352 clinicians with data). Median for this group: $14,068. Middle half: $6,399 to $25,756.

A lower Medicare payment amount than 70% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,536 clinicians with data). Median for this group: $18,312. Middle half: $7,110 to $37,062.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Clark Cassone are from 2017.

961 active clinicians are listed under Nurse Practitioner with a practice address in Boston, MA (3,483 in Massachusetts).

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

Telehealth indicator in Boston

25.1% of these 961 clinicians have the CMS telehealth indicator.

47.6% of these 961 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2017), CMS Open Payments (2025), 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 2025

Program year 2025 (payments made January 1 โ€“ December 31, 2025): fewer than 11 records totaling $120.65.

Manufacturer Payment Nature Product Type Amount ($)
SpringWorks Therapeutics, Inc.
Food and Beverage
In-kind items and services
OGSIVEO General $120.65

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Performed Procedures & Service Volume

Services billed to Original Medicare Part B in 2024.

CMS Part B ยท Data Year 2024
Reporting Year:

CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ€“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, 2017โ€“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
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
40 29 $294.10 $69.76
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
23 19 $459.57 $105.39
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
15 15 $801.40 $154.04
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes
14 14 $521.00 $115.78

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 2017.

CMS Part D ยท Data Year 2017
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Acyclovir Acyclovir 17 510 $274.81 โ€”
Jakafi Ruxolitinib Phosphate 14 371 $172,307.52 โ€”
Hydrocortisone Hydrocortisone 12 360 $439.41 โ€”
Prednisone Prednisone 11 215 $92.59 โ€”

Source: CMS Part D by Provider and Drug, 2017; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2024-01-03
Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

License # reported to NPPES MA RN2269715

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Nurse Practitioner - Family

NUCC Taxonomy Code: 363LF0000X

License # reported to NPPES MA RN2269715
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 - NURSE PRACTITIONER

Medicare Enrollment ID

I20181031001328

Enrollment State Jurisdiction

MA

PECOS Control ID

1355591850

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

The General Hospital Corporation

55 Fruit St, Boston, MA 021142621

Phone: 6177262000

Secondary Practice Locations

450 Brookline Ave

Boston, MA 02215

Phone: 6176326464

1100 9th Ave, Ms:h15-1550

Seattle, WA 981012756

Phone: 2063410708

Clinicians Sharing This Practice Address or Phone

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

12 listed
Dr. James Baker , MD MPH

Internal Medicine

NPI 1821071606

MDMPH

Dr. Ashwini Bapat , MD

Internal Medicine - Hospice and Palliative Medicine

NPI 1346515624

Doctor of Medicine (M.D.)

Dr. Vicki Jackson , MD

Internal Medicine - Hospice and Palliative Medicine

NPI 1538159710

Doctor of Medicine (M.D.)

Dr. Juliet Jacobsen , MD DPHI

Internal Medicine - Hospice and Palliative Medicine

NPI 1245221480

MDDPHI

Dr. Eric Krakauer , MD

Family Medicine - Hospice and Palliative Medicine

NPI 1649251000

Doctor of Medicine (M.D.)

Dr. Charlotta Lindvall , MD, PhD

Internal Medicine - Hospice and Palliative Medicine

NPI 1306150842

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Career & Practice History Timeline

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

16 Historical Events
๐Ÿ“
Updated Practice Location January 03, 2024

Registered at 55 FRUIT ST, BOSTON, MA 021142696 (Tel: 6177249197)

๐Ÿ‘ค
Provider Name / Credentials Updated July 21, 2021

Recorded as CLARK CASSONE, MSN, FNP-BC

๐Ÿ“
Updated Practice Location February 06, 2019

Registered at 450 BROOKLINE AVE, BOSTON, MA 02215 (Tel: 6176326464)

๐Ÿ“
Updated Business Mailing Address February 06, 2019

Registered at 450 BROOKLINE AVE, BOSTON, MA 022155450 (Tel: 6176326464)

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) February 06, 2019

Nurse Practitioner (license number reported to NPPES: MA RN2269715)

โœ…
NPI Profile Active April 12, 2017

NPI status registered as active in NPPES database

๐Ÿ“
Updated Practice Location April 12, 2017

Registered at 1100 9TH AVE, MS:H15-1550, SEATTLE, WA 981012756 (Tel: 2063410708)

๐Ÿ“
Updated Business Mailing Address April 12, 2017

Registered at 1100 9TH AVE, MS:M4-PFS, SEATTLE, WA 981012756 (Tel: 2065155811)

๐Ÿ‘ค
Provider Name / Credentials Updated April 12, 2017

Recorded as STEPHANIE CASSONE, MSN, FNP-BC

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) April 12, 2017

Nurse Practitioner (license number reported to NPPES: WA AP60551127)

โœ…
NPI Profile Active November 02, 2015

NPI status registered as active in NPPES database

๐Ÿ“
Practice Location (Initial Record) November 02, 2015

Registered at 8700 BEVERLY BLVD, WEST HOLLYWOOD, CA 900481804 (Tel: 3104233277)

๐Ÿ“
Business Mailing Address (Initial Record) November 02, 2015

Registered at 825 EASTLAKE AVE E, SEATTLE CANCER CARE ALLIANCE, SEATTLE, WA 981094405 (Tel: 2062887611)

๐Ÿ‘ค
Provider Name / Credentials (Initial Record) November 02, 2015

Recorded as STEPHANIE CASSONE, MSN, FNP-BC

๐ŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) November 02, 2015

Nurse Practitioner (license number reported to NPPES: WA AP60551127)

๐ŸŸข
Initial NPI Registration & Enumeration August 09, 2012

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1720335615
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: August 09, 2012
Last Update: January 03, 2024
Sole Proprietor: No

Other Nurse Practitioners in Boston

All Nurse Practitioners in Boston

Mailing Address

450 Brookline Ave

Boston, MA 022155450

Phone: 6176326464

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.