NPPES file of Aug 9, 2026

Christopher McMahan, DO

Diagnostic Radiology Physician · Worcester, MA

Christopher McMahan, DO is a diagnostic radiology physician with a practice address in Worcester, Massachusetts, and NPI 1861244121, issued on Apr 2, 2024. Check the license (Massachusetts 3019424, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1861244121
Name
Christopher McMahan
Credential
DO
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License number
3019424 MA
Self-reported in NPPES; status is on the state search
Practice location
55 Lake Ave N, Worcester, MA 01655
Phone
(478) 751-0367
Enumerated
Apr 2, 2024
Record last updated
Jul 3, 2026
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 55 Lake Ave N

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Nawal Aamir, MDInternal Medicine Physician1588248926
  2. Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
  3. Paula Abate, NPNurse Practitioner1336265909
  4. Aly AbayazeedDiagnostic Radiology Physician1821221946
  5. Zainab AbbasDermatology Physician1609028000
  6. Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417

Verify Christopher McMahan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 3019424
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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47% fewer Medicare Part D claims than the average diagnostic radiology physician in 2024

27 Medicare Part D claims for 12 beneficiaries, against an average of 51 among the 2,711 providers of this specialty who prescribed in Part D.

  1. Christopher McMahan27
  2. Specialty average51

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.

Christopher McMahan among 1,658 diagnostic radiology physician records in Massachusetts

Christopher McMahan, DO is one of 1,658 diagnostic radiology 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 2024, is newer than 98% of them.

  • NPI issued2024 · 98% of these records are older, 1% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · 68% of these records are
  • Record last updated2026 · 53% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

159 diagnostic radiology physician records list a practice address in Worcester

They are 159 of the 13,166 NPPES records with a practice address in Worcester, and 1,658 diagnostic radiology physician records in Massachusetts.

The 8 diagnostic radiology physician records with the nearest ZIP codes

  1. Steven Birnbaum, MDWorcester, MA 016551831177310
  2. Joseph Ferrucci, M.D.Worcester, MA 016551629045703
  3. Jeffrey Greenberg, MDWorcester, MA 016551588642193
  4. Young Kim, M.D.Worcester, MA 016551245295518
  5. Tasneem Lalani, MDWorcester, MA 016551417910811
  6. Jorge Medina, M.D.Worcester, MA 016551477520930
  7. Michael Morrow, D.O.Worcester, MA 016551598745721
  8. Christine Petersen, MDWorcester, MA 016551578554044

Common questions

What is Christopher McMahan, DO's NPI number?

Christopher McMahan, DO's National Provider Identifier (NPI) is 1861244121, issued on Apr 2, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Christopher McMahan, DO located?

The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (478) 751-0367. Providers update this record themselves, so call before visiting.

How can I verify Christopher McMahan, DO's license?

NPPES lists Massachusetts license number 3019424, 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 Christopher McMahan, DO prescribe under Medicare Part D?

In 2024, Christopher McMahan, DO had 27 Medicare Part D claims for 12 beneficiaries; the average among diagnostic radiology physician prescribers was 51. Part D covers Medicare prescriptions only.

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.