Mark Webster Maxfield, M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Worcester, MA
Mark Webster Maxfield, M.D. is a thoracic surgery (cardiothoracic vascular surgery) physician with a practice address in Worcester, Massachusetts, and NPI 1073757001, issued on Apr 21, 2009. Check the license (Massachusetts 269488, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark Webster Maxfield
- Credential
- M.D.
- Primary taxonomy
- Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X
- License number
- 269488 MA
Self-reported in NPPES; status is on the state search - Practice location
- 67 Belmont St, Worcester, MA 01605
- Phone
- (508) 334-5826
- Enumerated
- Apr 21, 2009
- Record last updated
- Nov 5, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (508) 334-8195
- Medicare enrollment
- Enrolled (PECOS I20180621000238); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest thoracic surgery (cardiothoracic vascular surgery) physician records → All 228 in Massachusetts → Look up another NPI →
Also registered at 67 Belmont St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Carol Buonamano, RDRegistered Dietitian1467668509
- Mirret El-HagrassyNeurology Physician1144514688
- Carlos Fairen Oro, MDSurgery Physician1265041032
Verify Mark Webster Maxfield in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 269488Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average thoracic surgery (cardiothoracic vascular surgery) physician in 2024
28 Medicare Part D claims for 20 beneficiaries, against an average of 101 among the 2,587 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Webster Maxfield among 228 thoracic surgery (cardiothoracic vascular surgery) physician records in Massachusetts
Mark Webster Maxfield, M.D. is one of 228 thoracic surgery (cardiothoracic vascular surgery) physician records with a practice address in Massachusetts. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 64% of them.
- NPI issued2009 · 64% of these records are older, 33% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2009 · median 1998 among the 131 with a school on file
- Record last updated2020 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208G00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician providers in Massachusetts
There are 228 thoracic surgery (cardiothoracic vascular surgery) physician records in Massachusetts.
All 228 in Massachusetts → Every provider in Worcester → Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician nationwide →
The 8 thoracic surgery (cardiothoracic vascular surgery) physician records with the nearest ZIP codes
- Geoffrey Graeber, M.D.Worcester, MA 016051154415875
- Feiran Lou, M.D.Worcester, MA 016051295997831
- Angelo Pezzella, M.D.Worcester, MA 016051215976303
- William Phillips, M.D.Worcester, MA 016051609260793
- Karl Uy, M.D.Worcester, MA 016051548226723
- Robert Bojar, M.D.Worcester, MA 016081639111032
- James Fingleton, MDWorcester, MA 016081265438709
- Michael O'Shea, M.D.Worcester, MA 016081164481404
Common questions
What is Mark Webster Maxfield, M.D.'s NPI number?
Mark Webster Maxfield, M.D.'s National Provider Identifier (NPI) is 1073757001, issued on Apr 21, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mark Webster Maxfield, M.D. located?
The NPPES record lists a practice address at 67 Belmont St, Worcester, MA, 01605. Phone: (508) 334-5826. Providers update this record themselves, so call before visiting.
How can I verify Mark Webster Maxfield, M.D.'s license?
NPPES lists Massachusetts license number 269488, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mark Webster Maxfield, M.D. prescribe under Medicare Part D?
In 2024, Mark Webster Maxfield, M.D. had 28 Medicare Part D claims for 20 beneficiaries; the average among thoracic surgery (cardiothoracic vascular surgery) physician prescribers was 101. Part D covers Medicare prescriptions only.
What is Mark Webster Maxfield, M.D.'s MIPS final score?
The 2023 MIPS final score is 97 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.