Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Ashley Ryles Nicholson, MD

Individual provider Emergency Medicine Physician · NPI 1558688861

Dr. Ashley Ryles Nicholson, MD is an Emergency Medicine Physician in Washington, District of Columbia. Practices as a sole proprietor. Licensed in California, District of Columbia and Pennsylvania.

Licensed in
CA, DC, PA
In the registry since
2010
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

2120 L St NW Ste 450
Washington, DC 20037-1541
Phone: (202) 741-2904
Fax: (202) 741-2921
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A151091 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MT196762 (PA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD041372 (DC)

Record details

NPI number1558688861
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 26, 2010
Last updated in NPPESJanuary 24, 2018

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients282
Services billed 315 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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