MS. KATHLEEN DOLORES VAN LEEUWEN MD
NPI 1003818642
Surgery - Pediatric Surgery in Sacramento, CA
About Ms. Kathleen Dolores Van Leeuwen Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. KATHLEEN DOLORES VAN LEEUWEN MD (NPI 1003818642) is an individual pediatric surgery provider in Sacramento, California, licensed in California (C56170) and active in the NPI registry since August 2005. She is enrolled in Medicare PECOS, maintains a secondary practice location in Phoenix, and is a graduate of Columbia University College Of Physicians And Surgeons (1996).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Location 1
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 and accepts Medicare assignment
Ms. Kathleen Dolores Van Leeuwen Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Kathleen Van Leeuwen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sacramento, CA 95817
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Regents Of The Univ Of Ca
- 2,570 clinicians in this Medicare group
Glendale, AZ 85308
- Reassigned Medicare billing, Arizona enrollment
- Medicare enrollment name: Phoenix Children's Hospital
- 1,416 clinicians in this Medicare group
Phoenix, AZ 85008
- Reassigned Medicare billing, Arizona enrollment
- 1,490 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.
SACRAMENTO, CA 95817
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 Kathleen Van Leeuwen's NPI number?
The NPI number for Kathleen Van Leeuwen is 1003818642. It was assigned to this individual provider in the NPPES registry on August 12, 2005. The provider is also known as Mrs. Kathleen Dolores Graziano MD.
Where is Kathleen Van Leeuwen located?
Kathleen Van Leeuwen practices at 2315 Stockton Blvd, Sacramento, CA 95817. The listed phone number is (916) 734-3229.
What is Kathleen Van Leeuwen's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.
Is Kathleen Van Leeuwen enrolled in Medicare?
Yes. Kathleen Van Leeuwen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Kathleen Van Leeuwen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Van Leeuwen reassigns Medicare benefits to 3 organizations: Regents Of The University Of Ca (Sacramento, CA), Phoenix Children's Medical Group (Glendale, AZ) and District Medical Group, Inc (Phoenix, AZ). Each 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 Kathleen Van Leeuwen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kathleen Van Leeuwen accept?
Health plans from Antidote Health Plan of Arizona, Inc., Blue Cross Blue Shield of Arizona and Imperial Insurance Companies, Inc. list Kathleen Van Leeuwen 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 Kathleen Van Leeuwen was last updated on March 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Ms. Kathleen Dolores Van Leeuwen, MD · NPI 1003818642
Pediatric Surgery physician in Sacramento, California. Individual provider, active in the CMS NPPES registry since August 12, 2005.
## Identity
- **NPI:** 1003818642 (Entity type: Individual)
- **Enumerated:** August 12, 2005
- **Primary specialty:** Surgery - Pediatric Surgery · taxonomy 2086S0120X
- **State license:** C56170 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2315 STOCKTON BLVD, Sacramento, CA 95817-2201
- **Phone:** (916) 734-3229
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of Ca (NPI 1063405074, Sacramento, CA); Phoenix Children's Medical Group (NPI 1679703441, Glendale, AZ); District Medical Group, Inc (NPI 1700119815, Phoenix, AZ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Columbia University College Of Physicians And Surgeons, class of 1996
## Record status
- **NPPES last updated:** March 5, 2026
- **Other identifiers:** Medicaid 940610 (AZ)
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Source: [NPI Profile](https://npiprofile.com/npi/1003818642) · Data from the CMS NPPES public registry.