OrganizationActive
Three21 Inc.
NPI 1588556492 · In Home Supportive Care Agency · Lutherville, MD
Three21 Inc. is a In Home Supportive Care Agency organization in Lutherville, MD (NPI 1588556492).
Provider details
- NPI number
- 1588556492
- Entity type
- Organization
- Primary specialty
- In Home Supportive Care AgencyAgencies
- Organization subpart
- No
- Authorized official
- Patrick Sullivan, Owner(720) 443-7858
Specialties & taxonomies
Agencies
Profile Score
Established profile(54/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% 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
1313 York Rd Ste 3
Lutherville, MD 21093-6037
Phone: (720) 443-7858
Street-level locationGet directions
Mailing address
1513 W Joppa Rd
Towson, MD 21204-3621
Registry dates
- Enumerated
- 2025-07-16
- Last updated
- 2025-07-17
- Certified
- 2025-07-17
Frequently asked questions
- What is Three21 Inc.'s NPI number?
- Three21 Inc.'s National Provider Identifier (NPI) is 1588556492, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Three21 Inc.?
- Three21 Inc. is classified in the NPPES registry as In Home Supportive Care Agency (Agencies).
- Where is Three21 Inc. located?
- Three21 Inc.'s practice location on file with NPPES is 1313 York Rd Ste 3, Lutherville, MD 21093-6037.
- What is Three21 Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Three21 Inc. is (720) 443-7858.
- Who is the authorized official for Three21 Inc.?
- The authorized official listed on Three21 Inc.'s NPPES record is Patrick Sullivan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Three21 Inc.'s NPI active?
- Yes — Three21 Inc.'s NPI (1588556492) is active in the NPPES registry as of the last update on 2025-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.