DR. JOHN SANTILLI M.D.
NPI 1811961469
Specialist in Shelton, CT
About Dr. John Santilli M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN SANTILLI M.D. (NPI 1811961469) is an individual specialist in Shelton, Connecticut, licensed in Connecticut (017262) and active in the NPI registry since February 2006.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John Santilli M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Santilli reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Norwalk, CT 06851
- Reassigned Medicare billing, Connecticut enrollment
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SHELTON, CT 06484
SHELTON, CT 06484
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Santilli's NPI number?
The NPI number for John Santilli is 1811961469. It was assigned to this individual provider in the NPPES registry on February 13, 2006.
Where is John Santilli located?
John Santilli practices at 4 Corporate Dr Ste 295, Shelton, CT 06484. The listed phone number is (203) 374-6103.
What is John Santilli's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is John Santilli enrolled in Medicare?
Yes. John Santilli is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Santilli's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Santilli reassigns Medicare benefits to Allergy Center Of Connecticut, PC (Norwalk, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Santilli's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Santilli was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John Santilli, M.D. · NPI 1811961469
Specialist provider in Shelton, Connecticut. Individual provider, active in the CMS NPPES registry since February 13, 2006.
## Identity
- **NPI:** 1811961469 (Entity type: Individual)
- **Enumerated:** February 13, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** 017262 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 4 CORPORATE DR, STE 295, Shelton, CT 06484-6240
- **Phone:** (203) 374-6103 · **Fax:** (203) 374-1663
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Allergy Center Of Connecticut, PC (NPI 1619115409, Norwalk, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 13, 2026
- **Other identifiers:** Medicaid 001172626 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1811961469) · Data from the CMS NPPES public registry.