DR. JOHN LECLERC WALSH MD
NPI 1033109202
Anesthesiology in Boston, MA
About Dr. John Leclerc Walsh Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN LECLERC WALSH MD (NPI 1033109202) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (78512) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Yale University School Of Medicine (1992).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John Leclerc Walsh Md 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.
Areas of Expertise CMS Part B claims
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Massachusetts General Hospital
Acute Care Hospitals · Boston, MAOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BOSTON, MA 02114
BOSTON, MA 02114
BOSTON, MA 02114
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 John Walsh's NPI number?
The NPI number for John Walsh is 1033109202. It was assigned to this individual provider in the NPPES registry on October 27, 2005.
Where is John Walsh located?
John Walsh practices at 55 Fruit St Cln 3 Anesthesia Associates, Boston, MA 02114. The listed phone number is (617) 726-2067.
What is John Walsh's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Walsh enrolled in Medicare?
Yes. John Walsh 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.
Is John Walsh affiliated with any hospitals?
According to CMS data, John Walsh is affiliated with Massachusetts General Hospital.
When was this NPI record last updated?
The NPPES record for John Walsh was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 27 days 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.
# Dr. John Leclerc Walsh, MD · NPI 1033109202
Anesthesiology physician in Boston, Massachusetts. Individual provider, active in the CMS NPPES registry since October 27, 2005.
## Identity
- **NPI:** 1033109202 (Entity type: Individual)
- **Enumerated:** October 27, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 78512 (Massachusetts)
- **Sole proprietor:** No
## Practice location
- **Address:** 55 FRUIT ST, CLN 3 ANESTHESIA ASSOCIATES, Boston, MA 02114-2696
- **Phone:** (617) 726-2067 · **Fax:** (617) 726-7536
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Yale University School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 3166945 (MA); Other 772238 (MA); Other J17742 (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1033109202) · Data from the CMS NPPES public registry.