Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. John Isaac Jr., M.D.
Surgery Physician in Warwick, RI · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225037435
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Registry record
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 (401) 739-8010
Fax (401) 739-6087
Enumeration date Jul 19, 2005
Last updated in NPPES Sep 17, 2025
Taxonomy & licenses
2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians · License MD07525 (RI) Secondary
208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 0101268741 (VA) Secondary
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 |
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.
Frequently asked questions
Where does John Isaac practice?
The practice location on file with NPPES is in Warwick, RI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Isaac?
The National Provider Identifier (NPI) for John Isaac is 1225037435, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Edward Thomas Cardiovascular Disease Physician · Warwick, RI NPI 1154327245 West Bay Surgical Associates Inc. Surgery Physician · Warwick, RI NPI 1174522304 David Luz Surgery Physician · Warwick, RI NPI 1861491086 Daniel Reardon Surgery Physician · Warwick, RI NPI 1265431357 Candace Dyer Surgery Physician · Warwick, RI NPI 1770582876 Elizabeth Vollucci Family Nurse Practitioner · Warwick, RI NPI 1720065337 Thomas Leddy Ophthalmology Physician · Warwick, RI NPI 1689631699 Thomas R. Leddy, M.D.,LLC Ophthalmology Physician · Warwick, RI NPI 1275575748
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-17.