Mark I Jacobs, MD
Mark I Jacobs is a Cardiovascular Disease Physician provider (Internal Medicine) practicing in Willimantic, CT, registered in the NPPES registry with NPI 1487638409 since 2005. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1487638409 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark I Jacobs |
| Credential | MD |
| Sex | Male |
| Practice address | 5 FOUNDERS ST STE 102, Willimantic, CT, 06226 |
| Phone | 8604562898 |
| Enumeration date | 2005-12-02 |
| Last updated in NPPES | 2023-08-01 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207RC0000X | Cardiovascular Disease Physician | Primary | 9159 | NH |
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: Mark Jacobs, MD NPI: 1487638409 Taxonomy: 207RC0000X (Cardiovascular Disease Physician) Address: 5 FOUNDERS ST STE 102, Willimantic, CT, 06226
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1114907029 | Regina Stuart | Individual | Surgery Physician | Willimantic, CT |
| 1548405871 | Huseyin Nail Aydin | Individual | Surgery Physician | Willimantic, CT |
| 1811251713 | Deirdre Clark | Individual | Adult Health Nurse Practitioner | Willimantic, CT |
| 1720569379 | Jamie Charron | Individual | Family Nurse Practitioner | Willimantic, CT |
| 1942198536 | Jennifer Misuraca | Individual | Acute Care Nurse Practitioner | Willimantic, CT |
Verify this record
Cross-check NPI 1487638409 against the authoritative CMS record: view Mark I Jacobs 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 2023-08-01.