MICHELLE PATRICIA KALLIS M.D.
NPI 1629464045
Surgery - Pediatric Surgery in Saint Louis, MO
About Michelle Patricia Kallis M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHELLE PATRICIA KALLIS M.D. (NPI 1629464045) is an individual pediatric surgery provider in Saint Louis, Missouri, licensed in Missouri (2023020139) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
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)
Michelle Patricia Kallis M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Michelle Kallis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Morristown, NJ 07960
- Reassigned Medicare billing, New Jersey enrollment
- 1,699 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 Michelle Kallis's NPI number?
The NPI number for Michelle Kallis is 1629464045. It was assigned to this individual provider in the NPPES registry on April 13, 2015.
Where is Michelle Kallis located?
Michelle Kallis practices at 1 Childrens Pl, Saint Louis, MO 63110. The listed phone number is (314) 454-6000.
What is Michelle Kallis's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.
Is Michelle Kallis enrolled in Medicare?
Yes. Michelle Kallis is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Michelle Kallis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Kallis reassigns Medicare benefits to Practice Associates Medical Group (Morristown, NJ). 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 Michelle Kallis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Michelle Kallis accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Michelle Kallis 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 Michelle Kallis was last updated on September 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Michelle Patricia Kallis, M.D. · NPI 1629464045
Pediatric Surgery physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 13, 2015.
## Identity
- **NPI:** 1629464045 (Entity type: Individual)
- **Enumerated:** April 13, 2015
- **Primary specialty:** Surgery - Pediatric Surgery · taxonomy 2086S0120X
- **State license:** 2023020139 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 CHILDRENS PL, Saint Louis, MO 63110-1002
- **Phone:** (314) 454-6000
## 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:** Practice Associates Medical Group (NPI 1427016385, Morristown, NJ), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1629464045) · Data from the CMS NPPES public registry.