IndividualActive
Deirdre Williams Mercer
NPI 1588458087 · Personal Care Attendant · Washington, DC
Deirdre Williams Mercer is a Personal Care Attendant provider in Washington, DC (NPI 1588458087).
Provider details
- NPI number
- 1588458087
- Entity type
- Individual
- Primary specialty
- Personal Care AttendantNursing Service Related Providers
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Nursing Service Related Providers
Profile Score
Basic profile(48/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
321 Oglethorpe St Ne
Washington, DC 20011-1635
Phone: (202) 487-4725
Street-level locationGet directions
Mailing address
321 Oglethorpe St Ne
Washington, DC 20011-1635
Registry dates
- Enumerated
- 2025-04-08
- Last updated
- 2025-04-08
- Certified
- 2025-04-08
Frequently asked questions
- What is Deirdre Williams Mercer's NPI number?
- Deirdre Williams Mercer's National Provider Identifier (NPI) is 1588458087, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Deirdre Williams Mercer's specialty?
- Deirdre Williams Mercer is listed in the NPPES registry with a primary specialty of Personal Care Attendant (Nursing Service Related Providers).
- Where is Deirdre Williams Mercer located?
- Deirdre Williams Mercer's practice location on file with NPPES is 321 Oglethorpe St Ne, Washington, DC 20011-1635.
- What is Deirdre Williams Mercer's phone number?
- The practice phone number listed in the NPPES registry for Deirdre Williams Mercer is (202) 487-4725.
- Is Deirdre Williams Mercer's NPI active?
- Yes — Deirdre Williams Mercer's NPI (1588458087) is active in the NPPES registry as of the last update on 2025-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.