Coen Johannes Gerardus Lap, MD, PHD
Hematology & Oncology Physician · Washington, DC
Coen Johannes Gerardus Lap, MD, PHD is a hematology & oncology physician with a practice address in Washington, District of Columbia, and NPI 1275162000, issued on Apr 3, 2020. Check the license (District of Columbia MD210011724, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Coen Johannes Gerardus Lap
- Credential
- MD, PHD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD210011724 DC
Self-reported in NPPES; status is on the state search - Practice location
- 3800 Reservoir RD NW, Washington, DC 20007
- Phone
- (202) 444-2223
- Enumerated
- Apr 3, 2020
- Record last updated
- Apr 21, 2026
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 81 in District of Columbia → Look up another NPI →
Also registered at 3800 Reservoir RD NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Coen Johannes Gerardus Lap in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD210011724Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
52 Medicare Part D claims for 14 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D.
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.
Coen Johannes Gerardus Lap among 81 hematology & oncology physician records in District of Columbia
Coen Johannes Gerardus Lap, MD, PHD is one of 81 hematology & oncology physician records with a practice address in District of Columbia. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 96% of them.
- NPI issued2020 · 96% of these records are older, 1% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2026 · 70% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in District of Columbia
There are 81 hematology & oncology physician records in District of Columbia.
All 81 in District of Columbia → Every provider in Washington → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ekatherine AsatianiWashington, DC 200071639177736
- Ami Chitalia, M.D.Washington, DC 200071083939102
- Julia Cunningham, M.D.Washington, DC 200071487949335
- Ann Gramza, M.D.Washington, DC 200071760690069
- Amy HankinWashington, DC 200071861424434
- Susan Honig, M.D.Washington, DC 200071184841330
- Jane InghamWashington, DC 200071396721528
- Claudine IsaacsWashington, DC 200071164414751
Common questions
What is Coen Johannes Gerardus Lap, MD, PHD's NPI number?
Coen Johannes Gerardus Lap, MD, PHD's National Provider Identifier (NPI) is 1275162000, issued on Apr 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Coen Johannes Gerardus Lap, MD, PHD located?
The NPPES record lists a practice address at 3800 Reservoir RD NW, Washington, DC, 20007. Phone: (202) 444-2223. Providers update this record themselves, so call before visiting.
How can I verify Coen Johannes Gerardus Lap, MD, PHD's license?
NPPES lists District of Columbia license number MD210011724, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Coen Johannes Gerardus Lap, MD, PHD prescribe under Medicare Part D?
In 2024, Coen Johannes Gerardus Lap, MD, PHD had 52 Medicare Part D claims for 14 beneficiaries; the average among hematology & oncology physician prescribers was 877. 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.