Dorothy J Sassi , NP
Nurse Practitioner • Springfield, MA
299 Carew St, Suite 419
Springfield, MA 011042301
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on June 3, 2006; this date does not establish years in practice.
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Published CMS data list 691 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99213 — Established patient outpatient office visit: 527 service units.
- 99214 — Established patient outpatient office visit: 83 service units.
- 99203 — New patient outpatient office visit: 35 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 2,345 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Omeprazole — 674 prescription fills, including refills.
- Pantoprazole Sodium — 322 prescription fills, including refills.
- Dicyclomine Hcl — 177 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 32 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Springfield, MA (2024, 25 clinicians with data). Median for this group: 315. Middle half: 215 to 691.
More 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.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 722 in 2020 to 691 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
299 Carew St
Suite 419
Springfield, MA 011042301
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
CMS Doctors and Clinicians lists 2 distinct group names: Hartford Healthcare Medical Group Specialists Pllc; Riverbend Medical Group Inc. 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
University Of Massachusetts Medical School
1999
What Public CMS Data Show
Nurse Practitioner: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
575 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $57,196 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.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
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 – by Provider and Service, 2024.
Paid by Medicare
About $41,631 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
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 – by Provider and Service, 2024.
30-day fills
4,822 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
$1,036,448 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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 – by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $155.86 across 6 records.
By nature of payment
- Food and Beverage: $155.86 across 6 records.
Reporting-company totals (3 largest of 5)
- Intercept Pharmaceuticals, Inc.: $50.25 across 2 records.
- Takeda Pharmaceuticals U.S.A., Inc.: $31.42 across 1 record.
- ABBVIE INC.: $27.26 across 1 record.
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.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
Years since graduation
27 years (graduated 1999)
CMS Doctors and Clinicians data list 1999 as the year this clinician finished professional school.
It tells you roughly how long ago the clinician finished 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
2006
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.
With Original Medicare, you usually pay only your deductible and coinsurance, and the office sends the claim to Medicare for you.
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, “Does your provider accept Medicare as full payment?”
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.
Enrolled in Medicare (PECOS)
Dorothy Sassi 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.
Can order Medicare-covered services
CMS lists Dorothy Sassi 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Springfield and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 75% of clinicians listed under Nurse Practitioner in Springfield, MA (2024, 25 clinicians with data). Median for this group: 315. Middle half: 215 to 691.
More 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 higher Medicare-allowed amount than 70% of clinicians listed under Nurse Practitioner in Springfield, MA (2024, 25 clinicians with data). Median for this group: $30,128. Middle half: $12,814 to $57,515.
A higher 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 higher Medicare payment amount than 70% of clinicians listed under Nurse Practitioner in Springfield, MA (2024, 25 clinicians with data). Median for this group: $23,447. Middle half: $9,905 to $45,182.
A higher Medicare payment amount than 75% 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 prescriptions
More Part D prescriptions than 80% of clinicians listed under Nurse Practitioner in Springfield, MA (2024, 25 clinicians with data). Median for this group: 675. Middle half: 188 to 1,565.
More Part D prescriptions than 85% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,589 clinicians with data). Median for this group: 330. Middle half: 89 to 1,072.
Part D drug cost
A higher Part D drug cost than 95% of clinicians listed under Nurse Practitioner in Springfield, MA (2024, 25 clinicians with data). Median for this group: $47,697. Middle half: $2,573 to $210,595.
A higher Part D drug cost than 95% of clinicians listed under Nurse Practitioner in Massachusetts (2024, 1,589 clinicians with data). Median for this group: $25,224. Middle half: $1,758 to $161,316.
58 active clinicians are listed under Nurse Practitioner with a practice address in Springfield, MA (3,483 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Springfield
12.1% of these 58 clinicians have the CMS telehealth indicator.
51.7% of these 58 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services varied from year to year: 722 in 2020 and 691 in 2024.
- 2020: 722
- 2021: 957
- 2022: 839
- 2023: 827
- 2024: 691
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Medicare-allowed amount
Medicare-allowed amount increased 34% from $42,665 in 2020 to $57,196 in 2024.
- 2020: $42,665
- 2021: $78,796
- 2022: $72,465
- 2023: $69,875
- 2024: $57,196
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Paid by Medicare
Paid by Medicare increased 42% from $29,383 in 2020 to $41,631 in 2024.
- 2020: $29,383
- 2021: $55,766
- 2022: $50,783
- 2023: $51,733
- 2024: $41,631
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 22% from 3,016 in 2020 to 2,345 in 2024.
- 2020: 3,016
- 2021: 3,155
- 2022: 3,190
- 2023: 2,875
- 2024: 2,345
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30-day fills
30-day fills decreased 12% from 5,460 in 2020 to 4,822 in 2024.
- 2020: 5,460
- 2021: 6,212
- 2022: 6,090
- 2023: 5,667
- 2024: 4,822
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Part D drug cost
Part D drug cost increased 70% from $608,346 in 2020 to $1,036,448 in 2024.
- 2020: $608,346
- 2021: $676,471
- 2022: $791,100
- 2023: $558,031
- 2024: $1,036,448
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $43.17 in 2021 to $155.86 in 2025.
- 2021: $43.17
- 2022: $183.07
- 2023: $411.07
- 2024: $535.47
- 2025: $155.86
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · 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
Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $155.86.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Takeda Pharmaceuticals U.S.A., Inc. |
Food and Beverage
In-kind items and services
|
ENTYVIO | General | $31.42 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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SKYRIZI | General | $27.26 |
| Intercept Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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OCALIVA | General | $25.86 |
| Phathom Pharmaceuticals, Inc. |
Food and Beverage
Cash or cash equivalent
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VOQUEZNA | General | $25.77 |
| Intercept Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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OCALIVA | General | $24.39 |
| Janssen Pharmaceuticals, Inc |
Food and Beverage
In-kind items and services
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TREMFYA | General | $21.16 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 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 – by Provider and Service data, 2017–2024; 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 |
|---|---|---|---|---|
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99213
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
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527 | 443 | $200.33 | $78.07 |
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99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
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83 | 79 | $300.00 | $107.85 |
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99203
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more
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35 | 35 | $260.00 | $95.59 |
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99212
Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
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30 | 29 | $91.00 | $48.92 |
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99204
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
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16 | 16 | $400.00 | $143.03 |
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.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Omeprazole | Omeprazole | 674 | 47,326 | $12,719.52 | 231 |
| Pantoprazole Sodium | Pantoprazole Sodium | 322 | 24,232 | $7,479.57 | 114 |
| Dicyclomine Hcl | Dicyclomine Hcl | 177 | 11,245 | $5,799.45 | 70 |
| Famotidine | Famotidine | 165 | 9,752 | $3,485.98 | 51 |
| Linzess | Linaclotide | 137 | 6,390 | $117,080.39 | 33 |
| Gavilyte-G | Peg3350/Sod Sulf,bicarb,cl/Kcl | 126 | 127 | $1,932.47 | 125 |
| Mesalamine | Mesalamine | 66 | 5,680 | $55,667.83 | 25 |
| Sucralfate | Sucralfate | 60 | 3,414 | $4,199.29 | 35 |
| Diphenoxylate-Atropine | Diphenoxylate Hcl/Atropine | 51 | 1,655 | $1,738.76 | 14 |
| Metoclopramide Hcl | Metoclopramide Hcl | 49 | 2,257 | $637.66 | 11 |
| Loperamide | Loperamide Hcl | 45 | 1,530 | $1,467.94 | — |
| Amitriptyline Hcl | Amitriptyline Hcl | 38 | 3,180 | $579.81 | 12 |
| Cholestyramine | Cholestyramine (With Sugar) | 37 | 2,482 | $4,091.01 | 16 |
| Esomeprazole Magnesium | Esomeprazole Magnesium | 36 | 2,936 | $5,160.26 | 18 |
| Hydrocortisone | Hydrocortisone | 35 | 691 | $530.58 | 21 |
| Lansoprazole | Lansoprazole | 34 | 2,290 | $2,003.80 | — |
| Ondansetron Hcl | Ondansetron Hcl | 32 | 854 | $202.56 | 14 |
| Trulance | Plecanatide | 30 | 900 | $16,558.59 | — |
| Creon | Lipase/Protease/Amylase | 29 | 1,181 | $65,199.18 | — |
| Ursodiol | Ursodiol | 25 | 2,064 | $8,750.49 | — |
| Budesonide Ec | Budesonide | 24 | 1,500 | $4,448.39 | 11 |
| Stelara | Ustekinumab | 20 | 700 | $610,677.10 | — |
| Sulfasalazine | Sulfasalazine | 20 | 1,650 | $793.74 | — |
| Nortriptyline Hcl | Nortriptyline Hcl | 18 | 1,260 | $290.20 | — |
| Misoprostol | Misoprostol | 14 | 454 | $611.01 | — |
(top 25 shown)
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
NUCC Taxonomy Code: 363L00000X
(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.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - NURSE PRACTITIONER
I20250516001911
CT
4587678867
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
Hartford Healthcare Medical Group Specialists Pllc
30 Loeffler Rd, Bloomfield, CT 060022256
Phone: 8603805150
Riverbend Medical Group Inc
271 Carew St, Springfield, MA 011042377
Phone: 4137489000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Internal Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Internal Medicine - Gastroenterology
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated June 03, 2006.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Nurse Practitioners in Springfield
- Gerri Smith, NP
- Ryan Flynn, NP
- Helen Petros, NP, PA-C
- Andrea Leger, NP
- Carina Del Valle
- Elizabeth Mcnichol, FNP
Mailing Address
Po Box 9132
Brookline, MA 024469132
Phone: 8009270002