JOSEPH LEARY D.O
NPI 1215356902
Emergency Medicine in Cambridge, MA
About Joseph Leary D.o NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOSEPH LEARY D.O (NPI 1215356902) is an individual emergency medicine provider in Cambridge, Massachusetts, licensed in Michigan (5101028918) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with Elkhart General Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Joseph Leary D.o is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
6Medicare enrollment records show Joseph Leary reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Cambridge, MA 02139
- Reassigned Medicare billing, Massachusetts enrollment
- 719 clinicians in this Medicare group
Salem, MA 01970
- Reassigned Medicare billing, Massachusetts enrollment
- 994 clinicians in this Medicare group
Baltimore, MD 21212
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- 309 clinicians in this Medicare group
Saginaw, MI 48601
- Reassigned Medicare billing, Michigan and Indiana enrollments
- Also billed through NPI 1154125698 (Indiana)
- 168 clinicians in this Medicare group
South Bend, IN 46601
- Reassigned Medicare billing, Indiana enrollment
- 69 clinicians in this Medicare group
Christiansted, St. Croix, VI 00821
- Reassigned Medicare billing, U.S. Virgin Islands enrollment
- 331 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Elkhart General Hospital
Acute Care Hospitals · Elkhart, INMemorial Hospital Of South Bend
Acute Care Hospitals · South Bend, INThree Rivers Health
Acute Care Hospitals · Three Rivers, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 02139 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Joseph Leary's NPI number?
The NPI number for Joseph Leary is 1215356902. It was assigned to this individual provider in the NPPES registry on April 10, 2014.
Where is Joseph Leary located?
Joseph Leary practices at 1493 Cambridge St, Cambridge, MA 02139. The listed phone number is (617) 665-2113.
What is Joseph Leary's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Joseph Leary enrolled in Medicare?
Yes. Joseph Leary is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Joseph Leary's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Leary reassigns Medicare benefits to 6 organizations: Cambridge Public Health Commission (Cambridge, MA), Mass General Brigham Medical Group Northern Massachusetts Inc (Salem, MA), Medstar Urgent Care LLC (Baltimore, MD), Cep America LLC (Saginaw, MI), South Bend Emergency Physicians, Inc (South Bend, IN) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joseph Leary's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Joseph Leary accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, CareSource and Taro Health list Joseph Leary as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Joseph Leary affiliated with any hospitals?
According to CMS data, Joseph Leary is affiliated with Elkhart General Hospital, Memorial Hospital Of South Bend and Three Rivers Health.
When was this NPI record last updated?
The NPPES record for Joseph Leary was last updated on November 6, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Joseph Leary, D.O · NPI 1215356902
Emergency Medicine physician in Cambridge, Massachusetts. Individual provider, active in the CMS NPPES registry since April 10, 2014.
## Identity
- **NPI:** 1215356902 (Entity type: Individual)
- **Enumerated:** April 10, 2014
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 5101028918 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1493 CAMBRIDGE ST, Cambridge, MA 02139-1047
- **Phone:** (617) 665-2113
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Cambridge Public Health Commission (NPI 1487603585, Cambridge, MA); Mass General Brigham Medical Group Northern Massachusetts Inc (NPI 1588606123, Salem, MA); Medstar Urgent Care LLC (NPI 1942623319, Baltimore, MD); Cep America LLC (NPI 1912687328, Saginaw, MI); South Bend Emergency Physicians, Inc (NPI 1487132114, South Bend, IN); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Lake Erie College Of Osteopathic Medicine, Bradenton, class of 2014
## Record status
- **NPPES last updated:** November 6, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1215356902) · Data from the CMS NPPES public registry.