Liam Patrick Mahoney
Emergency Medicine Physician · Boston, MA
Liam Patrick Mahoney is an emergency medicine physician with a practice address in Boston, Massachusetts, and NPI 1407243504, issued on Apr 16, 2015. Check the license (Massachusetts 278720, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Liam Patrick Mahoney
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 278720 MA
MD17234 RI
Self-reported in NPPES; status is on the state search - Practice location
- 1 Boston Medical Ctr PL Dept OF, Boston, MA 02118
- Phone
- (617) 414-4929
- Enumerated
- Apr 16, 2015
- Record last updated
- Aug 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20241213002029); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 1 Boston Medical Ctr PL Dept OF
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maryori Carmona, CRNACertified Registered Nurse Anesthetist1053642801
- Rachel Daws, LICSWClinical Social Worker1376113993
- Carly Ellis, LICSWClinical Social Worker1205317062
- Eliza Firn, MDPediatric Critical Care Medicine Physician1235634106
- Brittany Gouse, MD MPHPsychiatry Physician1245734607
- Yana Kotlar, LICSWClinical Social Worker1962892018
Verify Liam Patrick Mahoney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 278720Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average emergency medicine physician in 2024
107 Medicare Part D claims for 90 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Cefpodoxime Proxetil20 claims
- Prednisone16 claims
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.
Industry payments in 2024: $461.48
7 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 12,335 providers of this specialty with any payment received $953.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Community Medical Associates, Inc.Methuen, MA
- Emergency Medicine Services OF NH, LLCPlaistow, NH
- Jal Practice, LLCWoburn, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Liam Patrick Mahoney among 1,829 emergency medicine physician records in Massachusetts
Liam Patrick Mahoney is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 70% of them.
- NPI issued2015 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2009 · median 2011 among the 1,200 with a school on file
- Record last updated2020 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
543 emergency medicine physician records list a practice address in Boston
They are 543 of the 41,865 NPPES records with a practice address in Boston, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Boston → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Evan Berg, MDBoston, MA 021181982692596
- Edward Bernstein, MDBoston, MA 021181568434926
- Andreas Dewitz, MDBoston, MA 021181740267434
- Kathryn Dyer, MDBoston, MA 021181851363048
- James Feldman, MDBoston, MA 021181801868682
- Jerrilyn Jones, MDBoston, MA 021181467435396
- Joseph Kahn, M.D.Boston, MA 021181144293572
- Ricky Kue, M.D., M.P.H.Boston, MA 021181134102395
Common questions
What is Liam Patrick Mahoney's NPI number?
Liam Patrick Mahoney's National Provider Identifier (NPI) is 1407243504, issued on Apr 16, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Liam Patrick Mahoney located?
The NPPES record lists a practice address at 1 Boston Medical Ctr PL Dept OF, Boston, MA, 02118. Phone: (617) 414-4929. Providers update this record themselves, so call before visiting.
How can I verify Liam Patrick Mahoney's license?
NPPES lists Massachusetts license number 278720, 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 Liam Patrick Mahoney prescribe under Medicare Part D?
In 2024, Liam Patrick Mahoney had 107 Medicare Part D claims for 90 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.