Rachel Markus, LCSW-C
Clinical Social Worker · Hampstead, MD
Rachel Markus, LCSW-C is a clinical social worker with a practice address in Hampstead, Maryland, and NPI 1538554449, issued on Mar 30, 2015. Check the license (Maryland 18017, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Rachel Markus
- Credential
- LCSW-C
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- 18017 MD
Self-reported in NPPES; status is on the state search - Practice location
- 4500 Black Rock RD Ste 103, Hampstead, MD 21074
- Phone
- (443) 750-2321
- Enumerated
- Mar 30, 2015
- Record last updated
- Mar 20, 2024
- Medicare enrollment
- Enrolled (PECOS I20240805003789); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 9,007 in Maryland → Look up another NPI →
Also registered at 4500 Black Rock RD Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Diana Gayle, LCPCProfessional Counselor1114570611
- Lacey Head, LMSW, LGADCSocial Worker1083402713
- Kristin HoodSocial Worker1558099606
- Christina Meyer, LMSWClinical Social Worker1295585321
- Terrence Moore, LMSWSocial Worker1942086087
- Stacey Sullivan-Testa, LGPCProfessional Counselor1538903190
Verify Rachel Markus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 18017Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Rachel Markus Lcsw C LLCHampstead, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rachel Markus among 9,007 clinical social worker records in Maryland
Rachel Markus, LCSW-C is one of 9,007 clinical social worker records with a practice address in Maryland. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 47% of them.
- NPI issued2015 · 47% of these records are older, 49% newer
- In a Medicare fileYes · 11% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated2012 · median 2006 among the 1,685 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 clinical social worker records list a practice address in Hampstead
They are 6 of the 127 NPPES records with a practice address in Hampstead, and 9,007 clinical social worker records in Maryland.
All 9,007 in Maryland → Every provider in Hampstead → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Sharon Donnelly, LCSW-CHampstead, MD 210741013237049
- Joy Hurley, LCSW-CHampstead, MD 210741205280492
- Andrea Maurer, LCSW-CHampstead, MD 210741710923644
- Christina Meyer, LMSWHampstead, MD 210741295585321
- Lindsay Safir, LMSWHampstead, MD 210741063388585
- Elisabeth Chakmakian, LCSW-CElkridge, MD 210751124042965
- Cheryl Duffy-Williams, LCSW-CElkridge, MD 210751841473436
- Jean Mason, LCSW-CElkridge, MD 210751912154386
Common questions
What is Rachel Markus, LCSW-C's NPI number?
Rachel Markus, LCSW-C's National Provider Identifier (NPI) is 1538554449, issued on Mar 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Rachel Markus, LCSW-C located?
The NPPES record lists a practice address at 4500 Black Rock RD Ste 103, Hampstead, MD, 21074. Phone: (443) 750-2321. Providers update this record themselves, so call before visiting.
How can I verify Rachel Markus, LCSW-C's license?
NPPES lists Maryland license number 18017, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.