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DR. MARION WENDY KOSO-THOMAS M.D
NPI 1467674937
Pediatrics in Rockville, MD

Active since May 03, 2007PECOS Enrolled
3815 TERRAWOOD CT, ROCKVILLE, MD 20853(301) 570-4064 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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

NPI1467674937
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. MARION WENDY KOSO-THOMASCredential: M.D
Location Address3815 TERRAWOOD CTRockville, MD 20853-3288
Mailing Address3815 Terrawood CtRockville, MD 20853-3288 · (301) 570-4064
Phone(301) 570-4064
Sole ProprietorYes
Medical School CMSOtherGraduated 1994
Enumeration DateMay 3, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1467674937 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in MD · MD0056182
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
3815 TERRAWOOD CT, Rockville, MD 20853
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include CareSource.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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).

PECOS PAC ID1850556770
PECOS Enrollment IDI20251008003517
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

New Patient
$100.31 typical visit price
range $65.18 – $194.86
Typical copayment $25.07 (range $16.29 – $48.71)
Most-billed visit code 99203
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

What insurance does Marion Koso-thomas accept?

Health plans from CareSource 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.