Marion Wendy Koso-Thomas, M.D
Pediatrics Physician · Rockville, MD
Marion Wendy Koso-Thomas, M.D is a pediatrics physician with a practice address in Rockville, Maryland, and NPI 1467674937, issued on May 3, 2007. Check the license (Maryland MD0056182, as entered in NPPES) on the Maryland Board of Physicians; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Marion Wendy Koso-Thomas
- Credential
- M.D
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- MD0056182 MD
Self-reported in NPPES; status is on the state search - Practice location
- 3815 Terrawood CT, Rockville, MD 20853
- Phone
- (301) 570-4064
- Enumerated
- May 3, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20251008003517); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,842 in Maryland → Look up another NPI →
Verify Marion Wendy Koso-Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license MD0056182Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Marion Wendy Koso-Thomas among 1,842 pediatrics physician records in Maryland
Marion Wendy Koso-Thomas, M.D is one of 1,842 pediatrics physician records with a practice address in Maryland. 35% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2007, is newer than 49% of them.
- NPI issued2007 · 49% of these records are older, 40% newer
- In a Medicare fileNo · 35% of these records are
- In the CMS Doctors and Clinicians fileYes · 9% of these records are
- Graduated1994 · median 2008 among the 162 with a school on file
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
101 pediatrics physician records list a practice address in Rockville
They are 101 of the 14,353 NPPES records with a practice address in Rockville, and 1,842 pediatrics physician records in Maryland. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,842 in Maryland → Every provider in Rockville → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- John Pierce, M.D.Rockville, MD 208531306901822
- Jonathan Berman, MDRockville, MD 208521568625739
- Angeline Canagarajah, M.D, MPHRockville, MD 208521043335425
- Kristen Cantor, MDRockville, MD 208521275794273
- Stephen Chanock, M.D.Potomac, MD 208541013038256
- Laura Elliott, MDRockville, MD 208521215431986
- Carl Gatto, M.D.Potomac, MD 208541083611248
- Stephanie Hart, MDRockville, MD 208541578630828
Common questions
What is Marion Wendy Koso-Thomas, M.D's NPI number?
Marion Wendy Koso-Thomas, M.D's National Provider Identifier (NPI) is 1467674937, issued on May 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marion Wendy Koso-Thomas, M.D located?
The NPPES record lists a practice address at 3815 Terrawood CT, Rockville, MD, 20853. Phone: (301) 570-4064. Providers update this record themselves, so call before visiting.
How can I verify Marion Wendy Koso-Thomas, M.D's license?
NPPES lists Maryland license number MD0056182, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.