John R. O'Reilly, MD
John R. O'Reilly is a Pediatrics Physician provider (Pediatrics) practicing in Springfield, MA, registered in the NPPES registry with NPI 1821189721 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1821189721 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John R. O'Reilly |
| Credential | MD |
| Sex | Male |
| Practice address | 140 HIGH ST, Springfield, MA, 01105 |
| Phone | 4137942515 |
| Fax | 4137945673 |
| Enumeration date | 2006-09-27 |
| Last updated in NPPES | 2019-01-25 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208000000X | Pediatrics Physician | Primary | 73002 | MA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: John O'Reilly, MD NPI: 1821189721 Taxonomy: 208000000X (Pediatrics Physician) Address: 140 HIGH ST, Springfield, MA, 01105
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1043217318 | Sudeep Aulakh | Individual | Internal Medicine Physician | Springfield, MA |
| 1861465528 | Meredith Brown | Individual | Medical Physician Assistant | Springfield, MA |
| 1013985159 | Lucy Garbus | Individual | Pediatric Nurse Practitioner | Springfield, MA |
| 1710918040 | Amy Gottlieb | Individual | Internal Medicine Physician | Springfield, MA |
| 1841303435 | Booker Bush | Individual | Internal Medicine Physician | Springfield, MA |
| 1558460303 | Lauren Meade | Individual | Internal Medicine Physician | Springfield, MA |
| 1124119276 | Deborah Hanks | Individual | Pediatric Nurse Practitioner | Springfield, MA |
| 1871676916 | Sally Spencer-Long | Individual | Adult Health Nurse Practitioner | Springfield, MA |
Verify this record
Cross-check NPI 1821189721 against the authoritative CMS record: view John R. O'Reilly on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2019-01-25.