Joseph Leary, D.O
Emergency Medicine Physician · Cambridge, MA
Joseph Leary, D.O is an emergency medicine physician with a practice address in Cambridge, Massachusetts, and NPI 1215356902, issued on Apr 10, 2014. Check the license (Massachusetts FL7837896, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Joseph Leary
- Credential
- D.O
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- FL7837896 MA
5101028918 MI
DR.0061190 CO
02005111A IN
Self-reported in NPPES; status is on the state search - Practice location
- 1493 Cambridge St, Cambridge, MA 02139
- Phone
- (617) 665-2113
- Enumerated
- Apr 10, 2014
- Record last updated
- Nov 6, 2025
- Medicare enrollment
- Enrolled (PECOS I20241217004063); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Bradenton, 2014
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 1493 Cambridge St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Omar Abbas, MDStudent in an Organized Health Care Education/Training Program1225728025
- Nawyaab Abbasi, DOStudent in an Organized Health Care Education/Training Program1215875364
- Flannery AbbeySocial Worker1508604273
- Rana AbdallahSocial Worker1689220204
- Khaleel Abdul-Jabbaar, PT, DPTOrthopedic Physical Therapist1780295717
- Adri Abou-Bakr, MDStudent in an Organized Health Care Education/Training Program1770421844
Verify Joseph Leary in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license FL7837896Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average emergency medicine physician in 2024
101 Medicare Part D claims for 69 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Prednisone11 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.
Bills Medicare through 2 group practices
- Cep America LLCElkhart, IN
- Medstar Urgent Care LLCWheaton, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph Leary among 1,829 emergency medicine physician records in Massachusetts
Joseph Leary, D.O 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 2014, is newer than 67% of them.
- NPI issued2014 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2014 · median 2011 among the 1,200 with a school on file
- Record last updated2025 · 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).
42 emergency medicine physician records list a practice address in Cambridge
They are 42 of the 5,145 NPPES records with a practice address in Cambridge, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Cambridge → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Miriam Aschkenasy, M.D.Cambridge, MA 021391518939503
- Paul Chen, MD, MBACambridge, MA 021391154488898
- Slava Gaufberg, MDCambridge, MA 021391568537652
- Alex Goldstein, M.D.Cambridge, MA 021391255566949
- Irvin Heifetz, MDCambridge, MA 021391811062946
- Edward Lee, M.D.Cambridge, MA 021391689846578
- Luis Lobon, M.D., M.S.Cambridge, MA 021391033156799
- Benjamin Milligan, M.D.Cambridge, MA 021391104867233
Common questions
What is Joseph Leary, D.O's NPI number?
Joseph Leary, D.O's National Provider Identifier (NPI) is 1215356902, issued on Apr 10, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Leary, D.O located?
The NPPES record lists a practice address at 1493 Cambridge St, Cambridge, MA, 02139. Phone: (617) 665-2113. Providers update this record themselves, so call before visiting.
How can I verify Joseph Leary, D.O's license?
NPPES lists Massachusetts license number FL7837896, 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 Joseph Leary, D.O prescribe under Medicare Part D?
In 2024, Joseph Leary, D.O had 101 Medicare Part D claims for 69 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.