Margaret Litwin Sommerville, M.D.
Dermatology Physician · Chevy Chase, MD
Margaret Litwin Sommerville, M.D. is a dermatology physician with a practice address in Chevy Chase, Maryland, and NPI 1861671505, issued on Oct 30, 2007. Check the license (Maryland D0061245, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Margaret Litwin Sommerville
- Credential
- M.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- D0061245 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5530 Wisconsin Ave Ste 830, Chevy Chase, MD 20815
- Phone
- (301) 656-7546
- Enumerated
- Oct 30, 2007
- Record last updated
- Aug 10, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (301) 469-4952
- Medicare enrollment
- Enrolled (PECOS I20041113000067); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 341 in Maryland → Look up another NPI →
Verify Margaret Litwin Sommerville in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0061245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average dermatology physician in 2024
81 Medicare Part D claims for 38 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydrocortisone28 claims
- Ketoconazole11 claims
- Triamcinolone Acetonide11 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.
Margaret Litwin Sommerville among 341 dermatology physician records in Maryland
Margaret Litwin Sommerville, M.D. is one of 341 dermatology physician records with a practice address in Maryland. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 45% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1991 · median 2005 among the 241 with a school on file
- Record last updated2008 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 dermatology physician records list a practice address in Chevy Chase
They are 24 of the 1,118 NPPES records with a practice address in Chevy Chase, and 341 dermatology physician records in Maryland.
All 341 in Maryland → Every provider in Chevy Chase → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Moses Albert, MDChevy Chase, MD 208151740359017
- Elena Allbritton, M.D.Chevy Chase, MD 208151689866733
- Daniel Dellatorre, MDChevy Chase, MD 208151891833398
- Christine Dewitt, M.D.Chevy Chase, MD 208151659578581
- Alison Ehrlich, MDChevy Chase, MD 208151750376497
- Shelly Hall, M.D.Chevy Chase, MD 208151497747760
- Rebecca Kazin, MDChevy Chase, MD 208151588619878
- Angela Lotsikas, M.D.Chevy Chase, MD 208151922055102
Common questions
What is Margaret Litwin Sommerville, M.D.'s NPI number?
Margaret Litwin Sommerville, M.D.'s National Provider Identifier (NPI) is 1861671505, issued on Oct 30, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Litwin Sommerville, M.D. located?
The NPPES record lists a practice address at 5530 Wisconsin Ave Ste 830, Chevy Chase, MD, 20815. Phone: (301) 656-7546. Providers update this record themselves, so call before visiting.
How can I verify Margaret Litwin Sommerville, M.D.'s license?
NPPES lists Maryland license number D0061245, 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.
How much does Margaret Litwin Sommerville, M.D. prescribe under Medicare Part D?
In 2024, Margaret Litwin Sommerville, M.D. had 81 Medicare Part D claims for 38 beneficiaries; the average among dermatology physician prescribers was 797. 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.