Sandra 'Alexandra' Mahr Harper, MSW. LCSW-C
NPI 1720227432 · Social Worker · Baltimore, MD
Sandra 'Alexandra' Mahr Harper, MSW. LCSW-C is a Social Worker provider in Baltimore, MD (NPI 1720227432).
Provider details
- NPI number
- 1720227432
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW. LCSW-C
- Sex
- Female
- Sole proprietor
- No
- License
- 05595 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
- 2009-02-19
- Last updated
- 2009-02-19
Frequently asked questions
- What is Sandra 'Alexandra' Mahr Harper's NPI number?
- Sandra 'Alexandra' Mahr Harper's National Provider Identifier (NPI) is 1720227432, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sandra 'Alexandra' Mahr Harper's specialty?
- Sandra 'Alexandra' Mahr Harper is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Sandra 'Alexandra' Mahr Harper located?
- Sandra 'Alexandra' Mahr Harper's practice location on file with NPPES is 8307 Philadelphia Road, Baltimore, MD 21237.
- What is Sandra 'Alexandra' Mahr Harper's phone number?
- The practice phone number listed in the NPPES registry for Sandra 'Alexandra' Mahr Harper is (410) 687-7700.
- Is Sandra 'Alexandra' Mahr Harper's NPI active?
- Yes — Sandra 'Alexandra' Mahr Harper's NPI (1720227432) is active in the NPPES registry as of the last update on 2009-02-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.