Margaret M. Shaffer, MD
Anatomic Pathology & Clinical Pathology Physician · Washington, DC
Margaret M. Shaffer, MD is an anatomic pathology & clinical pathology physician with a practice address in Washington, District of Columbia, and NPI 1851507719, issued on May 15, 2007. Check the license (District of Columbia MD20064, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Margaret M. Shaffer
- Credential
- MD
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- License numbers
- MD20064 DC
D79890 MD
Self-reported in NPPES; status is on the state search - Practice location
- 5255 Loughboro RD NW, Washington, DC 20016
- Phone
- (202) 537-4455
- Enumerated
- May 15, 2007
- Record last updated
- Dec 22, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20041214000888); may accept Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 81 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 Margaret M. Shaffer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD20064Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Johns Hopkins UniversityWashington, DC
- Johns Hopkins UniversityBaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret M. Shaffer among 81 anatomic pathology & clinical pathology physician records in District of Columbia
Margaret M. Shaffer, MD is one of 81 anatomic pathology & clinical pathology physician records with a practice address in District of Columbia. 44% 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 49% of them.
- NPI issued2007 · 49% of these records are older, 41% newer
- In a Medicare fileYes · 44% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Graduated1989 · median 2006 among the 33 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X 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).
Anatomic Pathology & Clinical Pathology Physician providers in District of Columbia
There are 81 anatomic pathology & clinical pathology physician records in District of Columbia.
All 81 in District of Columbia → Every provider in Washington → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Christine Berkley, M.D.Washington, DC 200161376559229
- Thomas Fleury, M.D.Washington, DC 200161962529206
- Robert Klappenbach, M.D.Washington, DC 200161326067216
- Nemanja Rodic, M.D., PH.D.Washington, DC 200161821231887
- Alexandra Bovbel, M.D.Washington, DC 200171083877898
- Michael Brancaccio, MDWashington, DC 200171740262930
- Constance Diangelo, MDWashington, DC 200151932699204
- Vani Padmanabha, MDWashington, DC 200171003898206
Common questions
What is Margaret M. Shaffer, MD's NPI number?
Margaret M. Shaffer, MD's National Provider Identifier (NPI) is 1851507719, issued on May 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Margaret M. Shaffer, MD located?
The NPPES record lists a practice address at 5255 Loughboro RD NW, Washington, DC, 20016. Phone: (202) 537-4455. Providers update this record themselves, so call before visiting.
How can I verify Margaret M. Shaffer, MD's license?
NPPES lists District of Columbia license number MD20064, 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.
What is Margaret M. Shaffer, MD's MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.