Dr. John T Larossa , MD
Specialist โข Newton, MA
2000 Washington St, Suite 100
Newton, MA 024621650
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 March 1, 2006; this date does not establish years in practice.
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Published CMS data list 1,386 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99214 โ Established patient outpatient office visit: 648 service units.
- 36415 โ Insertion of needle into vein for collection of blood sample: 645 service units.
- 99443 โ Telephone medical discussion with physician: 52 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPTยฎ 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 4 records in the table ยท Guide: How to read Medicare Part B data
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Published CMS data list 2,325 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Levothyroxine Sodium โ 362 prescription fills, including refills.
- Jardiance (Empagliflozin) โ 257 prescription fills, including refills.
- Metformin Hcl โ 169 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 48 records in the table ยท Guide: How to read Medicare Part D prescriber data
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Close to the middle for Medicare Part B services among clinicians listed under Specialist in Massachusetts (2024, 125 clinicians with data). Median for this group: 1,165. Middle half: 287 to 2,822.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 2,253 in 2020 to 1,386 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
2000 Washington St
Suite 100
Newton, MA 024621650
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File
Tufts University School Of Medicine
1973
What Public CMS Data Show
Specialist: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
380 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 โ by Provider, 2024.
Medicare-allowed amount
About $110,683 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 โ by Provider and Service, 2024.
Paid by Medicare
About $78,026 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 โ by Provider and Service, 2024.
30-day fills
5,074 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
$743,013 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 โ by Provider and Drug, 2024.
Years since graduation
53 years (graduated 1973)
CMS Doctors and Clinicians data list 1973 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, โDoes your provider accept Medicare as full payment?โ
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)
Dr. Larossa 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 Dr. Larossa 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 Newton and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Specialist in Massachusetts (2024, 125 clinicians with data). Median for this group: 1,165. Middle half: 287 to 2,822.
Too few clinicians listed under Specialist in Newton have Medicare Part B data for 2024 to compare.
Medicare-allowed amount
Close to the middle for clinicians listed under Specialist in Massachusetts (2024, 125 clinicians with data). Median for this group: $71,526. Middle half: $20,788 to $197,769.
Too few clinicians listed under Specialist in Newton have Medicare Part B data for 2024 to compare.
Paid by Medicare
Close to the middle for clinicians listed under Specialist in Massachusetts (2024, 125 clinicians with data). Median for this group: $55,109. Middle half: $15,599 to $149,998.
Too few clinicians listed under Specialist in Newton have Medicare Part B data for 2024 to compare.
Medicare Part D prescriptions
More Part D prescriptions than 85% of clinicians listed under Specialist in Massachusetts (2024, 109 clinicians with data). Median for this group: 293. Middle half: 60 to 1,535.
Too few clinicians listed under Specialist in Newton have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 85% of clinicians listed under Specialist in Massachusetts (2024, 109 clinicians with data). Median for this group: $17,705. Middle half: $636 to $207,694.
Too few clinicians listed under Specialist in Newton have Medicare Part D data for 2024 to compare.
14 active clinicians are listed under Specialist with a practice address in Newton, MA (1,096 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Newton
7.1% of these 14 clinicians have the CMS telehealth indicator.
21.4% of these 14 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 decreased 38% from 2,253 in 2020 to 1,386 in 2024.
- 2020: 2,253
- 2021: 2,133
- 2022: 1,897
- 2023: 1,361
- 2024: 1,386
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Medicare-allowed amount
Medicare-allowed amount decreased 30% from $159,129 in 2020 to $110,683 in 2024.
- 2020: $159,129
- 2021: $175,919
- 2022: $159,223
- 2023: $114,451
- 2024: $110,683
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Paid by Medicare
Paid by Medicare decreased 32% from $114,998 in 2020 to $78,026 in 2024.
- 2020: $114,998
- 2021: $127,663
- 2022: $112,008
- 2023: $78,466
- 2024: $78,026
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 45% from 4,221 in 2020 to 2,325 in 2024.
- 2020: 4,221
- 2021: 4,112
- 2022: 3,877
- 2023: 2,471
- 2024: 2,325
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30-day fills
30-day fills decreased 43% from 8,958 in 2020 to 5,074 in 2024.
- 2020: 8,958
- 2021: 8,840
- 2022: 8,598
- 2023: 5,550
- 2024: 5,074
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Part D drug cost
Part D drug cost increased 109% from $355,063 in 2020 to $743,013 in 2024.
- 2020: $355,063
- 2021: $470,844
- 2022: $622,694
- 2023: $604,209
- 2024: $743,013
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (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.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2023 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, 2017โ2024; 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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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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648 | 339 | $400.00 | $139.55 |
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36415
Insertion of needle into vein for collection of blood sample
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645 | 347 | $24.92 | $8.65 |
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99443
Telephone medical discussion with physician, 21-30 minutes
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52 | 38 | $400.00 | $139.46 |
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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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41 | 41 | $500.00 | $181.07 |
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 |
|---|---|---|---|---|---|
| Levothyroxine Sodium | Levothyroxine Sodium | 362 | 29,235 | $3,975.87 | 94 |
| Jardiance | Empagliflozin | 257 | 13,212 | $245,334.42 | 49 |
| Metformin Hcl | Metformin Hcl | 169 | 13,522 | $1,742.39 | 40 |
| Ozempic | Semaglutide | 118 | 3,904 | $127,516.69 | 16 |
| Glipizide | Glipizide | 110 | 7,880 | $1,647.88 | 31 |
| Synthroid | Levothyroxine Sodium | 90 | 6,604 | $8,115.89 | 22 |
| Atorvastatin Calcium | Atorvastatin Calcium | 63 | 5,000 | $709.50 | 17 |
| Mounjaro | Tirzepatide | 63 | 2,380 | $84,753.88 | 11 |
| Testosterone | Testosterone | 58 | 1,880 | $7,230.51 | โ |
| Metformin Hcl Er | Metformin Hcl | 53 | 3,930 | $736.77 | 15 |
| Glipizide Er | Glipizide | 52 | 4,176 | $1,405.54 | 12 |
| Liothyronine Sodium | Liothyronine Sodium | 51 | 2,726 | $2,659.43 | 12 |
| Lantus Solostar | Insulin Glargine,hum.Rec.Anlog | 47 | 3,353 | $8,189.75 | 13 |
| Tradjenta | Linagliptin | 46 | 2,400 | $39,602.16 | 11 |
| Alendronate Sodium | Alendronate Sodium | 43 | 3,152 | $396.47 | 16 |
| Ultra-Fine Short Pen Needle | Pen Needle, Diabetic | 39 | 1,695 | $2,960.20 | โ |
| Simvastatin | Simvastatin | 38 | 2,932 | $263.10 | 12 |
| Januvia | Sitagliptin Phosphate | 36 | 2,660 | $45,843.52 | โ |
| Spironolactone | Spironolactone | 36 | 3,090 | $1,253.84 | 13 |
| Ibandronate Sodium | Ibandronate Sodium | 36 | 2,868 | $2,074.17 | 12 |
| Trulicity | Dulaglutide | 36 | 1,456 | $49,642.80 | โ |
| Lisinopril | Lisinopril | 31 | 2,750 | $125.38 | โ |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 31 | 2,433 | $24,044.16 | 12 |
| Hydrochlorothiazide | Hydrochlorothiazide | 30 | 1,953 | $52.83 | โ |
| Lorazepam | Lorazepam | 29 | 790 | $168.79 | โ |
(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: 174400000X
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Additional State Medicaid & Healthcare Payer Identifiers
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - ENDOCRINOLOGY
I20051029000058
MA
1355368291
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Otolaryngology
Doctor of Medicine (M.D.)
Psychiatry & Neurology - Neurology
Doctor of Medicine (M.D.)
Obstetrics & Gynecology
Doctor of Medicine (M.D.)
Internal Medicine - Hepatology
Doctor of Medicine (M.D.)
Obstetrics & Gynecology
Orthopaedic Surgery - Hand Surgery
Doctor of Medicine (M.D.)
Career & Practice History
NPI enumerated March 01, 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 Specialists in Newton
Healthcare providers in NewtonMailing Address
2000 Washington St, Suite 100
Newton, MA 024621650
Phone: 6172441311