Dr. Mark Fairweather , MD
Surgery โข Boston, MA
75 Francis St
Boston, MA 02115
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 25, 2009; this date does not establish years in practice.
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Published CMS data list 130 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:
- 99205 โ New patient outpatient office visit: 34 service units.
- 99205 โ New patient outpatient office visit: 34 service units.
- 99213 โ Established patient outpatient office visit: 23 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 6 records in the table ยท Guide: How to read Medicare Part B data
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Close to the middle for Medicare Part B services among clinicians listed under Surgery in Boston, MA (2024, 149 clinicians with data). Median for this group: 163. Middle half: 85 to 356.
Fewer Medicare Part B services than 70% of clinicians listed under Surgery in Massachusetts (2024, 435 clinicians with data). Median for this group: 216. Middle half: 111 to 410.
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 90 in 2020 to 130 in 2024.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2020โ2024.
Practice Location & Contact Primary Location
75 Francis St
Boston, MA 02115
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: Brigham And Womens Physicians Organization Inc; Dana-Farber Cancer Institute, Inc.. See the list
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026.
Listings do not confirm current availability, employment or a shared ownership network.
Medicare Profile & Education
Source: CMS Doctors and Clinicians National Downloadable File, CMS release of October 2, 2026
University Of Louisville School Of Medicine
2009
What Public CMS Data Show
Surgery: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
120 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 $21,401 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 $16,443 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.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $748.97 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.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
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.
Years since graduation
17 years (graduated 2009)
CMS Doctors and Clinicians data list 2009 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, CMS release of October 2, 2026.
NPI first issued
2009
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, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
Telehealth (some services)
Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.
You may be able to have some visits without going to the office. Ask which visits can be done by telehealth.
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, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Fairweather 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. Fairweather 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 Boston and Massachusetts
Billing and prescribing volume is not a quality rating.
Medicare Part B services
Close to the middle for clinicians listed under Surgery in Boston, MA (2024, 149 clinicians with data). Median for this group: 163. Middle half: 85 to 356.
Fewer Medicare Part B services than 70% of clinicians listed under Surgery in Massachusetts (2024, 435 clinicians with data). Median for this group: 216. Middle half: 111 to 410.
Medicare-allowed amount
Close to the middle for clinicians listed under Surgery in Boston, MA (2024, 149 clinicians with data). Median for this group: $29,050. Middle half: $11,988 to $55,507.
A lower Medicare-allowed amount than 60% of clinicians listed under Surgery in Massachusetts (2024, 435 clinicians with data). Median for this group: $31,887. Middle half: $14,190 to $56,544.
Paid by Medicare
Close to the middle for clinicians listed under Surgery in Boston, MA (2024, 149 clinicians with data). Median for this group: $22,426. Middle half: $9,412 to $43,579.
A lower Medicare payment amount than 60% of clinicians listed under Surgery in Massachusetts (2024, 435 clinicians with data). Median for this group: $24,431. Middle half: $10,665 to $43,891.
441 active clinicians are listed under Surgery with a practice address in Boston, MA (998 in Massachusetts).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Boston
18.6% of these 441 clinicians have the CMS telehealth indicator.
42% of these 441 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 increased 44% from 90 in 2020 to 130 in 2024.
- 2020: 90
- 2021: 104
- 2022: 122
- 2023: 185
- 2024: 130
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Medicare-allowed amount
Medicare-allowed amount increased 96% from $10,897 in 2020 to $21,401 in 2024.
- 2020: $10,897
- 2021: $15,479
- 2022: $16,543
- 2023: $29,868
- 2024: $21,401
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Paid by Medicare
Paid by Medicare increased 92% from $8,572 in 2020 to $16,443 in 2024.
- 2020: $8,572
- 2021: $12,211
- 2022: $13,157
- 2023: $23,624
- 2024: $16,443
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $101.70 in 2019 to $748.97 in 2025.
- 2019: $101.70
- 2020: $12,290.46
- 2021: $4,132.49
- 2023: $1,230.00
- 2025: $748.97
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, 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
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $748.97.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Histosonics, Inc. |
Travel and Lodging
Cash or cash equivalent
|
โ | General | $748.97 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2018โ2023 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, 2019โ2024; 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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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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34 | 34 | $924.00 | $190.40 |
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99205
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more
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34 | 34 | $924.00 | $190.22 |
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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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23 | 21 | $290.00 | $82.31 |
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76998
Ultrasonic guidance during surgery
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14 | 14 | $251.00 | $47.28 |
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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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14 | 14 | $745.00 | $140.07 |
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49905
Repair of abdomen using abdominal lining graft
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11 | 11 | $1709.00 | $358.49 |
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.
Specialties & License Numbers Reported to NPPES
NUCC Taxonomy Code: 208600000X
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - SURGICAL ONCOLOGY
I20180702003325
MA
0143468009
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, CMS release of October 2, 2026
Brigham And Womens Physicians Organization Inc
75 Francis St, Boston, MA 021156110
Phone: 6177325500
Dana-Farber Cancer Institute, Inc.
450 Brookline Ave, Boston, MA 022155418
Phone: 6176323586
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Urology
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Radiology - Radiation Oncology
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Doctor of Medicine (M.D.)
Student in an Organized Health Care Education/Training Program
Surgery
MDPHD
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 75 FRANCIS ST, BOSTON, MA 02115 (Tel: 6177326861)
Registered at 75 FRANCIS ST, BOSTON, MA 021156110 (Tel: 6177327925)
Surgery (license number reported to NPPES: MA 250373)
NPI status registered as active in NPPES database
Registered at 75 FRANCIS ST, BOSTON, MA 021156110 (Tel: 6177326861)
Registered at 1611 EHRLER DR, LOUISVILLE, KY 402131003 (Tel: 5027425136)
Recorded as MARK FAIRWEATHER, MD
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Surgery Specialists in Boston
- Dr. Paul Furlow, MD, PhD
- Dr. Charles Cook, MD
- Dr. Ronald Bleday, MD
- Evgeniya Larionova
- Dr. Hassan Khalil, MD
- Dr. Kendra Iskander, MD
Mailing Address
75 Francis St
Boston, MA 021156110
Phone: 6177327925