Ars of Aberdeen LLC – Methadone Clinic

Key facts

NPI: 1821491598
Entity type: Organization (NPI type 2)
Primary specialty: Methadone Clinic 261QM2800X
License: 905147 (MD)
Legal business name: ARS OF ABERDEEN LLC
Practice address: 24 W Bel Air Ave # 26
Aberdeen, MD 21001-3235
Phone: (410) 272-0230
Fax: (410) 272-0232
NPI assigned: Oct 8, 2014
Organization subpart: No

Authorized official

Name: Jennifer Keen
Title: Chief Clinical and Operating Office
Phone: (484) 731-2500

Corporate family (same tax ID) 1

Organizations that report the same tax identification number in the National Provider Directory.

Ars of Aberdeen LLC Methadone Clinic · Aberdeen, MD · NPI 1073932752

NPD tax ID

Practitioners 2

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

Sheila Denise Walker, FNP-C Family Nurse Practitioner · Belcamp, MD · NPI 1548778533

NPD
Cynthia Johns, LPCMH, NCC, CADC Addiction (Substance Use Disorder) Counselor · Historic New Castle, DE · NPI 1720738594

NPD (past)

Laboratory certificates & supplier records

Name & address match These CMS records do not include an NPI. They are shown here because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA number	Laboratory	Certificate	Expires
21D2090988	Ars Aberdeen LLC 24 W Bel Air Ave, Aberdeen, MD 21001	Certificate of waiver	Feb 2, 2027

Medicare participation

Medicare fee-for-service enrollment: Enrolled in MD

Medicare enrollment records

Enrollment ID	State	Provider type	PAC ID	Details
O20200305001890	MD	Part B Supplier - Opioid Treatment Program (Otp)	8820425788	Practice locations: Aberdeen, MD

National Provider Directory

Tax ID family: Addiction Recovery Systems (2 organizations share this tax ID)

Locations

24 W Bel Air Ave
#26
Aberdeen, MD 21001
Phone (410) 272-0230

24 W Bel Air Ave
Aberdeen, MD 21001

Specialties & licenses

Specialty (taxonomy)	Code	License	State	Primary
Methadone Clinic	261QM2800X	905147	MD	Yes

Addresses

Primary practice location

24 W Bel Air Ave # 26
Aberdeen, MD 21001-3235

Mailing address

150 Onix Dr
Kennett Square, PA 19348-1886
Phone (484) 731-2500

Other identifiers

Identifier	Type	State	Issuer
4230710-00	Medicaid	MD

Other names

Addiction Recovery Systems Doing business as

Other providers in Aberdeen, MD

All providers in Aberdeen, MD · Methadone Clinic in Maryland

Sources for this page

NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Record last updated by the provider on Mar 24, 2026. Information in NPPES is self-reported and not verified by CMS.
NUCC Health Care Provider Taxonomy: specialty names.
Medicare Fee-For-Service Public Provider Enrollment (CMS/PECOS): enrollments, PAC IDs and benefit reassignments.
Medicare Care Compare provider data (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.