Gearoid McMahon, MB BCH BAO
Nephrology Physician · Boston, MA
Gearoid McMahon, MB BCH BAO is a nephrology physician with a practice address in Boston, Massachusetts, and NPI 1992025274, issued on Jun 9, 2010. Check the license (Massachusetts 244817, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Gearoid McMahon
- Credential
- MB BCH BAO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 244817 MA
Self-reported in NPPES; status is on the state search - Practice location
- 75 Francis St, Boston, MA 02115
- Phone
- (617) 732-5500
- Enumerated
- Jun 9, 2010
- Entity
- Type 1 · individual
Also registered at 75 Francis St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amin AalipourStudent in an Organized Health Care Education/Training Program1902483258
- Emily Aaronson, M.D.Emergency Medicine Physician1962791558
- Sarah Abbett, M.D.Anesthesiology Physician1902097736
- Christine Abbott, NPAdult Health Nurse Practitioner1851471940
- Muhammad Abd-El-Barr, M.D., PH.D.Neurological Surgery Physician1891922688
- Duaa AbdelhameidStudent in an Organized Health Care Education/Training Program1851852867
Verify Gearoid McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 244817Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
85% fewer Medicare Part D claims than the average nephrology physician in 2024
229 Medicare Part D claims for 56 beneficiaries, against an average of 1,511 among the 8,473 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims.
Most prescribed
- Jardiance33 claims
- Calcitriol31 claims
- Lisinopril18 claims
- Hydrochlorothiazide17 claims
- Farxiga15 claims
- Amlodipine Besylate13 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: $5.32
2 payments, mostly education; the largest payer was Travere Therapeutics, Inc.. The 6,365 providers of this specialty with any payment received $3,068.36 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.
One hospital or facility affiliation
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Nephrology Physician providers in Massachusetts
There are 314 nephrology physician records in Massachusetts.
Other nephrology physician records in Massachusetts
- Amtul Aala, MDBoston, MA1174946347
- Reza Abdi, MDBoston, MA1356359368
- Vivian AbernethyBoston, MA1710960232
- Rekha Abichandani, M.D.Cambridge, MA1912033598
- Konstantin Abramov, M.D.Worcester, MA1992854707
- Krishna Agarwal, M.B.B.S.Springfield, MA1477916120
- Ahsan Alam, M.D.Boston, MA1598885980
- David Albert, M.D.Pittsfield, MA1386692531
- Saif Alenizi, M.D., M.P.H.Boston, MA1255680997
- Howard Alfred, M.D.Worcester, MA1942283627
Common questions
What is Gearoid McMahon, MB BCH BAO's NPI number?
Gearoid McMahon, MB BCH BAO's National Provider Identifier (NPI) is 1992025274, issued on Jun 9, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Gearoid McMahon, MB BCH BAO located?
The NPPES record lists a practice address at 75 Francis St, Boston, MA, 02115. Phone: (617) 732-5500. Providers update this record themselves, so call before visiting.
How can I verify Gearoid McMahon, MB BCH BAO's license?
NPPES lists Massachusetts license number 244817, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gearoid McMahon, MB BCH BAO prescribe under Medicare Part D?
In 2024, Gearoid McMahon, MB BCH BAO had 229 Medicare Part D claims for 56 beneficiaries; the average among nephrology physician prescribers was 1,511. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.