Dr. John Isaac Jr., M.D.
Dr. John Isaac Jr. is a Surgery Physician provider (Surgery) practicing in Warwick, RI, registered in the NPPES registry with NPI 1225037435 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1225037435 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. John Isaac Jr. |
| Credential | M.D. |
| Sex | Male |
| Practice address | 390 TOLL GATE RD, STE.200, Warwick, RI, 02886 |
| Phone | 4017398010 |
| Fax | 4017396087 |
| Enumeration date | 2005-07-19 |
| Last updated in NPPES | 2025-09-17 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 2086S0129X | Vascular Surgery Physician | Secondary | MD07525 | RI |
| 208600000X | Surgery Physician | Secondary | 20154 | NH |
| 208600000X | Surgery Physician | Secondary | 0101268741 | VA |
| 208600000X | Surgery Physician | Primary | RI7525 | RI |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 200881 | Other | RI | BLUE CHIP PROVIDER ID |
| 7000784 | Medicaid | RI | — |
| 3121659 | Medicaid | NH | — |
| 29065-0 | Other | RI | BLUE CROSS PROVIDER ID |
Copy-ready billing details
Provider: John Isaac, M.D. NPI: 1225037435 Taxonomy: 208600000X (Surgery Physician) Address: 390 TOLL GATE RD, STE.200, Warwick, RI, 02886
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1154327245 | Edward Thomas | Individual | Cardiovascular Disease Physician | Warwick, RI |
| 1174522304 | West Bay Surgical Associates Inc. | Organization | Surgery Physician | Warwick, RI |
| 1861491086 | David Luz | Individual | Surgery Physician | Warwick, RI |
| 1265431357 | Daniel Reardon | Individual | Surgery Physician | Warwick, RI |
| 1770582876 | Candace Dyer | Individual | Surgery Physician | Warwick, RI |
| 1629063219 | Keith Callahan | Individual | Family Medicine Physician | Warwick, RI |
| 1720065337 | Elizabeth Vollucci | Individual | Family Nurse Practitioner | Warwick, RI |
| 1689631699 | Thomas Leddy | Individual | Ophthalmology Physician | Warwick, RI |
Verify this record
Cross-check NPI 1225037435 against the authoritative CMS record: view Dr. John Isaac Jr. 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 2025-09-17.