DR. JOHN JOSEPH HILLGEN IV D.M.D.
NPI 1538193370
Dentist - Oral and Maxillofacial Surgery in Waterbury, CT
About Dr. John Joseph Hillgen Iv D.m.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN JOSEPH HILLGEN IV D.M.D. (NPI 1538193370) is an individual oral and maxillofacial surgery provider in Waterbury, Connecticut, licensed in Connecticut (8138) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
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 Joseph Hillgen Iv D.m.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Hillgen reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Waterbury, CT 06708
- Reassigned Medicare billing, Connecticut enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06708 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
WATERBURY, CT 06708
WATERBURY, CT 06708
WATERBURY, CT 06708
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 Hillgen's NPI number?
The NPI number for John Hillgen is 1538193370. It was assigned to this individual provider in the NPPES registry on July 10, 2006.
Where is John Hillgen located?
John Hillgen practices at 1389 W Main St Suite 320, Waterbury, CT 06708. The listed phone number is (203) 573-1427.
What is John Hillgen's specialty?
The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.
Is John Hillgen enrolled in Medicare?
Yes. John Hillgen is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Hillgen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Hillgen reassigns Medicare benefits to Greater Waterbury Oral & Maxillofacial Surgeons LLC (Waterbury, 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 Hillgen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Hillgen accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Humana and 1 other insurer list John Hillgen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for John Hillgen was last updated on July 3, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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 Joseph Hillgen IV, D.M.D. · NPI 1538193370
Oral and Maxillofacial Surgery provider in Waterbury, Connecticut. Individual provider, active in the CMS NPPES registry since July 10, 2006.
## Identity
- **NPI:** 1538193370 (Entity type: Individual)
- **Enumerated:** July 10, 2006
- **Primary specialty:** Dentist - Oral and Maxillofacial Surgery · taxonomy 1223S0112X
- **State license:** 8138 (Connecticut)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1389 W MAIN ST, SUITE 320, Waterbury, CT 06708-3104
- **Phone:** (203) 573-1427 · **Fax:** (203) 574-2460
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Greater Waterbury Oral & Maxillofacial Surgeons LLC (NPI 1033136825, Waterbury, CT), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1995
## Record status
- **NPPES last updated:** July 3, 2008
- **Other identifiers:** Medicare UPIN U85183 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1538193370) · Data from the CMS NPPES public registry.