DR. PATRICK A DILLON MD
NPI 1649296948
Surgery - Pediatric Surgery in Saint Louis, MO
About Dr. Patrick A Dillon Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. PATRICK A DILLON MD (NPI 1649296948) is an individual pediatric surgery provider in Saint Louis, Missouri, licensed in Missouri (113094) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
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. Patrick A Dillon Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Patrick Dillon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 14 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.
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Patrick Dillon's NPI number?
The NPI number for Patrick Dillon is 1649296948. It was assigned to this individual provider in the NPPES registry on July 14, 2006.
Where is Patrick Dillon located?
Patrick Dillon practices at 1 Childrens Pl Div Surg Ped, Ste 2A, Saint Louis, MO 63110. The listed phone number is (314) 454-6022.
What is Patrick Dillon's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.
Is Patrick Dillon enrolled in Medicare?
Yes. Patrick Dillon is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Patrick Dillon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Dillon reassigns Medicare benefits to Washington University (Saint Louis, MO). 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 Patrick Dillon's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Patrick Dillon accept?
Health plans from Cox HealthPlans and UnitedHealthcare list Patrick Dillon 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 Patrick Dillon was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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. Patrick A Dillon, MD · NPI 1649296948
Pediatric Surgery physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since July 14, 2006.
## Identity
- **NPI:** 1649296948 (Entity type: Individual)
- **Enumerated:** July 14, 2006
- **Primary specialty:** Surgery - Pediatric Surgery · taxonomy 2086S0120X
- **State license:** 113094 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 CHILDRENS PL, DIV SURG PED, STE 2A, Saint Louis, MO 63110-1002
- **Phone:** (314) 454-6022 · **Fax:** (866) 422-8308
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Washington University (NPI 1427098938, Saint Louis, MO), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 17, 2025
- **Other identifiers:** Medicaid 208851717 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1649296948) · Data from the CMS NPPES public registry.