SARAH KOLLAR D.O.
NPI 1649624891
Pediatrics - Pediatric Cardiology in Washington, DC
About Sarah Kollar D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SARAH KOLLAR D.O. (NPI 1649624891) is an individual pediatric cardiology provider in Washington, District Of Columbia, licensed in District Of Columbia (DO034919) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS and is a graduate of Other (2016).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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
Sarah Kollar D.o. 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
2Medicare enrollment records show Sarah Kollar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20010
- Reassigned Medicare billing, District of Columbia enrollment
- 1,417 clinicians in this Medicare group
Gaithersburg, MD 20878
- Reassigned Medicare billing, District of Columbia enrollment
- 340 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.
WASHINGTON, DC 20010
WASHINGTON, DC 20010
WASHINGTON, DC 20010
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 Sarah Kollar's NPI number?
The NPI number for Sarah Kollar is 1649624891. It was assigned to this individual provider in the NPPES registry on April 13, 2016. The provider is also known as Ms. Sarah Taber.
Where is Sarah Kollar located?
Sarah Kollar practices at 111 Michigan Ave NW, Washington, DC 20010. The listed phone number is (202) 476-4258.
What is Sarah Kollar's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Sarah Kollar enrolled in Medicare?
Yes. Sarah Kollar 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 Sarah Kollar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sarah Kollar reassigns Medicare benefits to 2 organizations: Children's Hospital (Washington, DC) and Adventist Physician Services, Inc. (Gaithersburg, MD). 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 Sarah Kollar'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 Sarah Kollar was last updated on October 31, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Sarah Kollar, D.O. · NPI 1649624891
Pediatric Cardiology physician in Washington, District of Columbia. Individual provider, active in the CMS NPPES registry since April 13, 2016.
## Identity
- **NPI:** 1649624891 (Entity type: Individual)
- **Enumerated:** April 13, 2016
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** DO034919 (District of Columbia)
- **Sole proprietor:** No
## Practice location
- **Address:** 111 MICHIGAN AVE NW, Washington, DC 20010-2916
- **Phone:** (202) 476-4258
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Children's Hospital (NPI 1780800128, Washington, DC); Adventist Physician Services, Inc. (NPI 1376623207, Gaithersburg, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** October 31, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1649624891) · Data from the CMS NPPES public registry.