William Mark Richardson, MD
Student in an Organized Health Care Education/Training Program · Brooklyn, NY
William Mark Richardson, MD is a student in an organized health care education/training program with a practice address in Brooklyn, New York, and NPI 1285494732, issued on Mar 21, 2024. Check the license with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Mark Richardson
- Credential
- MD
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 450 Clarkson Avenue, Brooklyn, NY 11203
- Phone
- (718) 270-1229
- Enumerated
- Mar 21, 2024
- Record last updated
- Jun 10, 2025
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 37,241 in New York → Look up another NPI →
Also registered at 450 Clarkson Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Matthew Adams, MDStudent in an Organized Health Care Education/Training Program1659906832
- Emmanuel Adomfeh, MD, MPHInternal Medicine Physician1336630375
- Tigran Aghabekyan, M.D.Student in an Organized Health Care Education/Training Program1124867619
- Xavier Aguayo Arguello, M.D.Student in an Organized Health Care Education/Training Program1053149914
- Mosab Ahmed, MBBSStudent in an Organized Health Care Education/Training Program1396424057
Verify William Mark Richardson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average student in an organized health care education/training program in 2024
14 Medicare Part D claims, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
William Mark Richardson among 37,241 student in an organized health care education/training program records in New York
William Mark Richardson, MD is one of 37,241 student in an organized health care education/training program records with a practice address in New York. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 51% of them.
- NPI issued2024 · 51% of these records are older, 33% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 5% of these records are
- Record last updated2025 · 24% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4,987 student in an organized health care education/training program records list a practice address in Brooklyn
They are 4,987 of the 64,057 NPPES records with a practice address in Brooklyn, and 37,241 student in an organized health care education/training program records in New York.
All 37,241 in New York → Every provider in Brooklyn → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Noelle Burton, MDBrooklyn, NY 112031427210665
- Mirnova Ceide, M.D.Brooklyn, NY 112031184835779
- Efthimios Georgakakos, M.D.Brooklyn, NY 112031508020793
- Candace Grant, MDBrooklyn, NY 112031114178126
- Mie Han, M.D.Brooklyn, NY 112031710149307
- Kamran Ikram, MDBrooklyn, NY 112031669625661
- Richard Kinyamu, MBCHBBrooklyn, NY 112031396942629
- Sophia Kogan, M.D.Brooklyn, NY 112031699929216
Common questions
What is William Mark Richardson, MD's NPI number?
William Mark Richardson, MD's National Provider Identifier (NPI) is 1285494732, issued on Mar 21, 2024. An NPI identifies a provider in billing; it is not a license.
Where is William Mark Richardson, MD located?
The NPPES record lists a practice address at 450 Clarkson Avenue, Brooklyn, NY, 11203. Phone: (718) 270-1229. Providers update this record themselves, so call before visiting.
How can I verify William Mark Richardson, MD's license?
Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does William Mark Richardson, MD prescribe under Medicare Part D?
In 2024, William Mark Richardson, MD had 14 Medicare Part D claims; the average among student in an organized health care education/training program prescribers was 185. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.