DR. MARION WENDY KOSO-THOMAS M.D
NPI 1467674937
Pediatrics in Rockville, MD
About Dr. Marion Wendy Koso-thomas M.d NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARION WENDY KOSO-THOMAS M.D (NPI 1467674937) is an individual pediatrics provider in Rockville, Maryland, licensed in Maryland (MD0056182) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1994).
NPPES Registry Identity
Specialties & Licenses
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. Marion Wendy Koso-thomas M.d is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Marion Koso-thomas reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Washington, DC 20007
- Reassigned Medicare billing, District of Columbia and Maryland enrollments
- Also billed through NPI 1891797148 (Maryland)
- 861 clinicians in this Medicare group
Henderson, NC 27536
- Reassigned Medicare billing, North Carolina enrollment
- 178 clinicians in this Medicare group
Danville, VA 24540
- Reassigned Medicare billing, Virginia enrollment
- 204 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 20853 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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 Marion Koso-thomas's NPI number?
The NPI number for Marion Koso-thomas is 1467674937. It was assigned to this individual provider in the NPPES registry on May 3, 2007.
Where is Marion Koso-thomas located?
Marion Koso-thomas practices at 3815 Terrawood Ct, Rockville, MD 20853. The listed phone number is (301) 570-4064.
What is Marion Koso-thomas's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Marion Koso-thomas enrolled in Medicare?
Yes. Marion Koso-thomas is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Marion Koso-thomas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marion Koso-thomas reassigns Medicare benefits to 3 organizations: Mgmc LLC (Washington, DC), Dlp Maria Parham Physician Practices LLC (Henderson, NC) and Danville Physician Practices LLC (Danville, VA). 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 Marion Koso-thomas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marion Koso-thomas accept?
Health plans from CareSource and Cigna Healthcare list Marion Koso-thomas 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 Marion Koso-thomas was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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. Marion Wendy Koso-Thomas, M.D · NPI 1467674937
Pediatrics physician in Rockville, Maryland. Individual provider, active in the CMS NPPES registry since May 3, 2007.
## Identity
- **NPI:** 1467674937 (Entity type: Individual)
- **Enumerated:** May 3, 2007
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** MD0056182 (Maryland)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3815 TERRAWOOD CT, Rockville, MD 20853-3288
- **Phone:** (301) 570-4064
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Mgmc LLC (NPI 1316949654, Washington, DC); Dlp Maria Parham Physician Practices LLC (NPI 1578256749, Henderson, NC); Danville Physician Practices LLC (NPI 1548948359, Danville, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1994
## Record status
- **NPPES last updated:** July 8, 2007
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Source: [NPI Profile](https://npiprofile.com/npi/1467674937) · Data from the CMS NPPES public registry.