Marc Errol Phillpotts, M.D.
Rheumatology Physician · Washington, DC
Marc Errol Phillpotts, M.D. is a rheumatology physician with a practice address in Washington, District of Columbia, and NPI 1518300151, issued on Apr 13, 2013. Check the license (District of Columbia MD044077, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Marc Errol Phillpotts
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License numbers
- MD044077 DC
A168762 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2021 K St NW Ste 300, Washington, DC 20006
- Phone
- (301) 942-7600
- Enumerated
- Apr 13, 2013
- Record last updated
- Jan 21, 2026
- Medicare enrollment
- Enrolled (PECOS I20180627001262); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 57 in District of Columbia → Look up another NPI →
Also registered at 2021 K St NW Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adey Berhanu, M.D.Rheumatology Physician1417246091
- Shari Diamond, M.D.Rheumatology Physician1326165697
- Kiley Golden, PA-CPhysician Assistant1568298222
- Lauren TidwellPhysical Therapist1114517257
- Angus Worthing, MDRheumatology Physician1558534925
Verify Marc Errol Phillpotts in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD044077Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average rheumatology physician in 2024
365 Medicare Part D claims for 101 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Prednisone79 claims
- Alendronate Sodium33 claims
- Methotrexate30 claims
- Humira(Cf) Pen21 claims
- Celecoxib20 claims
- Methylprednisolone20 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.
Industry payments in 2024: $140.57
2 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Arthritis And Rheumatism Associates PCWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Errol Phillpotts among 57 rheumatology physician records in District of Columbia
Marc Errol Phillpotts, M.D. is one of 57 rheumatology physician records with a practice address in District of Columbia. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 79% of them.
- NPI issued2013 · 79% of these records are older, 16% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 51% of these records are
- Graduated2009 · median 2006 among the 29 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X 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).
Rheumatology Physician providers in District of Columbia
There are 57 rheumatology physician records in District of Columbia.
All 57 in District of Columbia → Every provider in Washington → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Werner Barth, M.D.Washington, DC 200061659370948
- Adey Berhanu, M.D.Washington, DC 200061417246091
- David Borenstein, MDWashington, DC 200061366441727
- Shari Diamond, M.D.Washington, DC 200061326165697
- Justin Peng, MDWashington, DC 200061538328141
- Angus Worthing, MDWashington, DC 200061558534925
- Carol Deane Benedict, MDWashington, DC 200071356575864
- Thomas CuppsWashington, DC 200071336147206
Common questions
What is Marc Errol Phillpotts, M.D.'s NPI number?
Marc Errol Phillpotts, M.D.'s National Provider Identifier (NPI) is 1518300151, issued on Apr 13, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Marc Errol Phillpotts, M.D. located?
The NPPES record lists a practice address at 2021 K St NW Ste 300, Washington, DC, 20006. Phone: (301) 942-7600. Providers update this record themselves, so call before visiting.
How can I verify Marc Errol Phillpotts, M.D.'s license?
NPPES lists District of Columbia license number MD044077, 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 Marc Errol Phillpotts, M.D. prescribe under Medicare Part D?
In 2024, Marc Errol Phillpotts, M.D. had 365 Medicare Part D claims for 101 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.