Princess Essi Mark-Adjeli, M.D.
Medical Oncology Physician · Washington, DC
Princess Essi Mark-Adjeli, M.D. is a medical oncology physician with a practice address in Washington, District of Columbia, and NPI 1104351527, issued on Apr 23, 2017. Check the license (District of Columbia MD210011849, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Princess Essi Mark-Adjeli
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- MD210011849 DC
Self-reported in NPPES; status is on the state search - Practice location
- 5255 Loughboro RD NW, Washington, DC 20016
- Phone
- (202) 537-2000
- Enumerated
- Apr 23, 2017
- Record last updated
- Aug 9, 2023
- Medicare enrollment
- Enrolled (PECOS I20231012000222); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 29 in District of Columbia → Look up another NPI →
Also registered at 5255 Loughboro RD NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Princess Essi Mark-Adjeli in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD210011849Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average medical oncology physician in 2024
175 Medicare Part D claims for 56 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D.
Most prescribed
- Anastrozole62 claims
- Letrozole35 claims
- Prochlorperazine Maleate22 claims
- Ondansetron Hcl11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $31.79
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 3,343 providers of this specialty with any payment received $11,773.47 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Johns Hopkins UniversityWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Princess Essi Mark-Adjeli among 29 medical oncology physician records in District of Columbia
Princess Essi Mark-Adjeli, M.D. is one of 29 medical oncology physician records with a practice address in District of Columbia. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 90% of them.
- NPI issued2017 · 90% of these records are older, 3% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2016 · median 2001 among the 19 with a school on file
- Record last updated2023 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X 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).
Medical Oncology Physician providers in District of Columbia
There are 29 medical oncology physician records in District of Columbia.
All 29 in District of Columbia → Every provider in Washington → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Karim Boudadi, MDWashington, DC 200161508184490
- Larissa Korde, M.D.Washington, DC 200161316962277
- Channing Paller, M.D.Washington, DC 200161356487763
- Michael Pishvaian, MDWashington, DC 200161710171061
- Solmaz Sahebjam, MDWashington, DC 200161821265232
- Giampaolo Talamo, MDWashington, DC 200161073540332
- Luis Heffess, MDWashington, DC 200171972686384
- Lester Miles, M.D.Washington, DC 200171467463992
Common questions
What is Princess Essi Mark-Adjeli, M.D.'s NPI number?
Princess Essi Mark-Adjeli, M.D.'s National Provider Identifier (NPI) is 1104351527, issued on Apr 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Princess Essi Mark-Adjeli, M.D. located?
The NPPES record lists a practice address at 5255 Loughboro RD NW, Washington, DC, 20016. Phone: (202) 537-2000. Providers update this record themselves, so call before visiting.
How can I verify Princess Essi Mark-Adjeli, M.D.'s license?
NPPES lists District of Columbia license number MD210011849, 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 Princess Essi Mark-Adjeli, M.D. prescribe under Medicare Part D?
In 2024, Princess Essi Mark-Adjeli, M.D. had 175 Medicare Part D claims for 56 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Princess Essi Mark-Adjeli, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.