Dr. Patrick Leong, DO
Dr. Patrick Leong is a Internal Medicine Physician provider (Internal Medicine) practicing in Somerville, MA, registered in the NPPES registry with NPI 1447237003 since 2005. The credential DO stands for Doctor of Osteopathic Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1447237003 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Patrick Leong |
| Credential | DO |
| Sex | Male |
| Practice address | 440 FOLEY ST, Somerville, MA, 02145 |
| Phone | 8572820777 |
| Enumeration date | 2005-12-27 |
| Last updated in NPPES | 2023-08-02 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207Q00000X | Family Medicine Physician | Secondary | 7813 | NH |
| 207R00000X | Internal Medicine Physician | Primary | 151924 | MA |
DO — Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 30005217 | Medicaid | NH | — |
Copy-ready billing details
Provider: Patrick Leong, DO NPI: 1447237003 Taxonomy: 207R00000X (Internal Medicine Physician) Address: 440 FOLEY ST, Somerville, MA, 02145
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1376541003 | Anthony Ishak | Individual | Ambulatory Care Pharmacist | Somerville, MA |
| 1104893155 | Lucia Dias-Hoff | Individual | Family Medicine Physician | Somerville, MA |
| 1821025214 | Deborah Adner | Individual | Physician Assistant | Somerville, MA |
| 1578787248 | Luis Henkel | Individual | Internal Medicine Physician | Somerville, MA |
| 1497008247 | Marie Grace Han | Individual | Nurse Practitioner | Somerville, MA |
| 1497140305 | Brian Smerkers | Individual | Internal Medicine Physician | Somerville, MA |
| 1629453121 | Emily Marini | Individual | Family Nurse Practitioner | Somerville, MA |
| 1134696800 | James Ehrlich | Individual | Family Nurse Practitioner | Somerville, MA |
Verify this record
Cross-check NPI 1447237003 against the authoritative CMS record: view Dr. Patrick Leong 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 2026-07-11. Provider record last updated 2023-08-02.