Rachel Markus, LCSW-C
NPI 1538554449 · Clinical Social Worker · Hampstead, MD
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rachel Markus, LCSW-C is a Clinical Social Worker provider in Hampstead, MD (NPI 1538554449).
Provider details
- NPI number
- 1538554449
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 18017 (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
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
4 documented practice locations
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
Additional practice locations (3)
- 1351 Walkabout CtEldersburg, MD 21784-6450Phone: (443) 750-2321
- 2528 Mountain Rd Ste 102-204Pasadena, MD 21122-7203Phone: (443) 548-3733Fax: (410) 360-1675
- 4231 Postal Ct Ste 201Pasadena, MD 21122-4474Phone: (443) 548-3733Fax: (410) 360-1675
Registry dates
- Enumerated
- 2015-03-30
- Last updated
- 2024-03-20
- Certified
- 2024-03-20
Frequently asked questions
- What is Rachel Markus's NPI number?
- Rachel Markus's National Provider Identifier (NPI) is 1538554449, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rachel Markus's specialty?
- Rachel Markus is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Rachel Markus located?
- Rachel Markus's practice location on file with NPPES is 4500 Black Rock Rd Ste 103, Hampstead, MD 21074-2649.
- What is Rachel Markus's phone number?
- The practice phone number listed in the NPPES registry for Rachel Markus is (443) 750-2321.
- Does Rachel Markus accept Medicare?
- Rachel Markus is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rachel Markus's NPI active?
- Yes — Rachel Markus's NPI (1538554449) is active in the NPPES registry as of the last update on 2024-03-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.