Gladwell LLC
NPI 1154101921 · Mental Health Clinic/Center (Including Community Mental Health Center) · Baltimore, MD
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gladwell LLC is a Mental Health Clinic/Center (Including Community Mental Health Center) organization in Baltimore, MD (NPI 1154101921).
Provider details
- NPI number
- 1154101921
- Entity type
- Organization
- Primary specialty
- Mental Health Clinic/Center (Including Community Mental Health Center)Ambulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Catherine Donnerstag, President(443) 600-8467
Specialties & taxonomies
Ambulatory Health Care Facilities
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES 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
Mailing address
Registry dates
- Enumerated
- 2023-09-29
- Last updated
- 2025-11-21
- Certified
- 2025-11-21
Frequently asked questions
- What is Gladwell LLC's NPI number?
- Gladwell LLC's National Provider Identifier (NPI) is 1154101921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Gladwell LLC?
- Gladwell LLC is classified in the NPPES registry as Mental Health Clinic/Center (Including Community Mental Health Center) (Ambulatory Health Care Facilities).
- Where is Gladwell LLC located?
- Gladwell LLC's practice location on file with NPPES is 1015 Debbie Ave, Baltimore, MD 21221-3339.
- What is Gladwell LLC's phone number?
- The practice phone number listed in the NPPES registry for Gladwell LLC is (253) 509-4433.
- Does Gladwell LLC accept Medicare?
- Gladwell LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Gladwell LLC?
- The authorized official listed on Gladwell LLC's NPPES record is Catherine Donnerstag, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Gladwell LLC's NPI active?
- Yes — Gladwell LLC's NPI (1154101921) is active in the NPPES registry as of the last update on 2025-11-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.