Dr. Mark Webster Maxfield, MD
- Medicare services, 2024
- 248
- Medicare patients, 2024
- 169
- Part D claims, 2024
- 28
- MIPS score, 2024
- 100
- Hospital affiliations
- 5
- Practice address
- 60 Hospital Road, Leominster, MA 01453
- Practice phone
- Call (978) 466-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Maxfield's professional email, personal email and mobile number
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Dr. Mark Webster Maxfield is a cardiothoracic surgeon in Leominster, Massachusetts
Dr. Maxfield practices at UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts, part of UMass Memorial Health Care.
Dr. Maxfield's NPI, 1073757001, was assigned on April 21, 2009. Dr. Maxfield graduated from Columbia University College of Physicians and Surgeons in 2009. Dr. Maxfield holds Massachusetts license 269488.
- NPI
- 1073757001NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002127263
- NPI enumeration date
- April 21, 2009
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (978) 466-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 43
- Medical school graduation
- 2009
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Webster Maxfield practices at UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts
Dr. Maxfield's primary practice is UMass Memorial Health - HealthAlliance-Clinton Hospital, at 60 Hospital Road, Leominster, MA 01453 in Worcester County. The practice phone is (978) 466-2000.
- UMass Memorial Health - HealthAlliance-Clinton Hospital60 Hospital Road, Leominster, MA 01453 · Worcester CountyPhone(978) 466-2000
Source: Dmand AI Affiliation Data
Dr. Mark Webster Maxfield is affiliated with 6 sites of care and 1 medical group
Dr. Maxfield's primary practice is UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts, part of UMass Memorial Health Care. Dr. Maxfield is also affiliated with UMass Memorial Medical Center - University Campus. The medical group on file is UMass Memorial Medical Group. Dmand AI also links Dr. Maxfield to 3 more hospitals and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Webster Maxfield's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maxfield practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UMass Memorial Health - HealthAlliance-Clinton Hospital | Available with a free account |
| +5 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
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Dr. Mark Webster Maxfield is one of 166 cardiothoracic surgeons in Massachusetts
Thoracic surgery (cardiothoracic vascular surgery) is Dr. Maxfield's primary specialty in the NPI Registry, under taxonomy code 208G00000X. Dr. Maxfield is licensed in Massachusetts.
Specialties and state licenses
- Thoracic surgery (cardiothoracic vascular surgery), MassachusettsPrimary
Cardiothoracic surgeons near Dr. Maxfield
Counts of cardiothoracic surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Mark Webster Maxfield billed Medicare for 248 services in 2024
CMS data shows 248 Medicare services from Dr. Maxfield across 10 procedure codes in 2024, for 169 Medicare patients. Medicare paid $35,091 for them.
Dr. Maxfield's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2092024: 2033%
- Surgery
- 2023: 392024: 4515%
Where Dr. Maxfield's Medicare services took place, 2024
- In an office12149%
- In a facility12751%
Dr. Maxfield compared with the Massachusetts median for cardiothoracic surgeons, 2024
- Dr. Maxfield
- Massachusetts median
- Medicare services
- 248vs 19328% above
- Medicare patients
- 169vs 15211% above
Medians across 131 cardiothoracic surgeons in Massachusetts with Dmand AI profiles that report each measure.
Dr. Maxfield's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Maxfield and other cardiothoracic surgeons in Massachusetts.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Webster Maxfield treated 169 Medicare patients in 2024, average age 72
CMS counts 169 Medicare patients who saw Dr. Maxfield in 2024. The largest group is 65 to 74, with 75 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 35% are also on Medicaid. Their average risk score is 1.80, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Maxfield's median patient age at 71, with 54% women.
Dr. Maxfield's Medicare patients by age, 2024
Dr. Maxfield's Medicare patients by sex, 2024
- Women8349%
- Men8651%
Chronic conditions among Dr. Maxfield's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- COPD60%
- Ischemic heart disease49%
- Mood disorders47%
- Arthritis46%
- Anxiety45%
- Cancer42%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maxfield's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women54%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Webster Maxfield wrote 28 Medicare Part D claims in 2024
In 2024, Dr. Maxfield wrote 28 Medicare Part D claims for 20 patients. 96% of them were for generic drugs.
Dr. Maxfield's Part D claims by kind of drug, 2024
- Generic27 claims96%
- Brand-name and other1 claims4%
Drug classes CMS tracks in Dr. Maxfield's Part D claims, 2024
- Opioids43%12 of 28 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Mark Webster Maxfield scored 100 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 100 out of 100 for Dr. Maxfield for performance year 2024, reported through an alternative payment model (APM). Dr. Maxfield accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Maxfield as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Maxfield's MIPS scores, performance year 2024
- 100of 100Final score
- 83of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Mark Webster Maxfield received $20,796 in industry payments from 2018 to 2025
CMS Open Payments shows 46 general payments to Dr. Maxfield from 5 drug and device companies from 2018 to 2025. Education make up the largest share, 46% of the total. Intuitive Surgical, Inc. paid the most, $20,340.
General payments to Dr. Maxfield by program year, 2018 to 2025
General payments to Dr. Maxfield by kind, 2018 to 2025
- Education$9,63846%
- Speaker and faculty fees$6,00029%
- Travel and lodging$3,58117%
- Food and beverage$1,5628%
- Gifts$140%
Companies that paid Dr. Maxfield the most, 2018 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Webster Maxfield graduated from Columbia University College of Physicians and Surgeons
Dr. Maxfield graduated from Columbia University College of Physicians and Surgeons in 2009.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark Webster Maxfield's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Mark Webster Maxfield
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What is Dr. Mark Webster Maxfield's NPI number?
Dr. Mark Webster Maxfield's NPI number is 1073757001. It was assigned on April 21, 2009, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Webster Maxfield?
Dr. Mark Webster Maxfield is a cardiothoracic surgeon in Leominster, Massachusetts. The primary specialty in the NPI Registry is Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (taxonomy code 208G00000X).
Where does Dr. Mark Webster Maxfield practice?
Dr. Maxfield practices at 60 Hospital Road, Leominster, MA 01453. Dr. Maxfield's primary practice is UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts, part of UMass Memorial Health Care. Dmand AI also links Dr. Maxfield to 3 hospitals and 1 group practice or clinic.
What is Dr. Mark Webster Maxfield's office phone number?
The practice phone on file for Dr. Maxfield is (978) 466-2000.
What is Dr. Mark Webster Maxfield's medical license number?
Dr. Maxfield holds Massachusetts license 269488.
Which hospitals is Dr. Mark Webster Maxfield affiliated with?
Dr. Maxfield practices at UMass Memorial Health - HealthAlliance-Clinton Hospital in Leominster, Massachusetts. Dr. Maxfield is also affiliated with UMass Memorial Medical Center - University Campus. Dmand AI links Dr. Maxfield to 3 more hospitals.
What medical group is Dr. Mark Webster Maxfield part of?
Dr. Maxfield is linked to UMass Memorial Medical Group.
Does Dr. Mark Webster Maxfield accept Medicare?
Yes. CMS data shows Dr. Maxfield billed Medicare for 248 services in 2024, and Dr. Maxfield accepts Medicare assignment.
Does Dr. Mark Webster Maxfield offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Maxfield as offering telehealth services.
What is Dr. Mark Webster Maxfield's MIPS score?
Dr. Maxfield's MIPS final score for performance year 2024 is 100 out of 100, reported through an alternative payment model (APM).
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How many Medicare patients does Dr. Mark Webster Maxfield see?
CMS counts 169 Medicare patients who saw Dr. Maxfield in 2024, with an average age of 72.
What services does Dr. Mark Webster Maxfield bill to Medicare?
In 2024, Dr. Maxfield's most billed Medicare services were office visit, new patient (99204), office visit, established patient (99214) and hospital inpatient care (99231).
Where did Dr. Mark Webster Maxfield go to medical school?
Dr. Maxfield graduated from Columbia University College of Physicians and Surgeons in 2009.
Has Dr. Mark Webster Maxfield received payments from drug or device companies?
CMS Open Payments shows $20,796 in general payments to Dr. Maxfield from 5 companies from 2018 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Mark Webster Maxfield been practicing?
Dr. Maxfield graduated from medical school in 2009, 17 years ago.
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