DR. CHRISTINE KARWOWSKI M.D.
NPI 1770805632
Pediatrics - Pediatric Gastroenterology in Katonah, NY
About Dr. Christine Karwowski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTINE KARWOWSKI M.D. (NPI 1770805632) is an individual pediatric gastroenterology provider in Katonah, New York, licensed in Pennsylvania (MT 190581) and active in the NPI registry since February 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Christine Karwowski M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Christine Karwowski reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Mount Kisco, NY 10549
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Optum Medical Care PC
- 1,601 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10536 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.
KATONAH, NY 10536
KATONAH, NY 10536
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 Christine Karwowski's NPI number?
The NPI number for Christine Karwowski is 1770805632. It was assigned to this individual provider in the NPPES registry on February 19, 2010.
Where is Christine Karwowski located?
Christine Karwowski practices at 111 Bedford Rd, Katonah, NY 10536. The listed phone number is (914) 241-1050.
What is Christine Karwowski's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.
Is Christine Karwowski enrolled in Medicare?
Yes. Christine Karwowski is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Christine Karwowski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christine Karwowski reassigns Medicare benefits to Optum Medical Care, P.C. (Mount Kisco, NY). 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 Christine Karwowski'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 Christine Karwowski was last updated on April 4, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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. Christine Karwowski, M.D. · NPI 1770805632
Pediatric Gastroenterology physician in Katonah, New York. Individual provider, active in the CMS NPPES registry since February 19, 2010.
## Identity
- **NPI:** 1770805632 (Entity type: Individual)
- **Enumerated:** February 19, 2010
- **Primary specialty:** Pediatrics - Pediatric Gastroenterology · taxonomy 2080P0206X
- **State license:** MT 190581 (Pennsylvania)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 111 BEDFORD RD, Katonah, NY 10536-2115
- **Phone:** (914) 241-1050
## 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:** Optum Medical Care, P.C. (NPI 1982643003, Mount Kisco, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 4, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1770805632) · Data from the CMS NPPES public registry.