Advocate Support Services, Inc.

Advocate Support Services, Inc. is a healthcare organization registered as Community/Behavioral Health Agency in Annapolis, MD, holding Type 2 (organization) NPI 1548327539 since 2007. The authorized official on file is James Crosson, President.

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NPI	1548327539
Entity type	Organization (Type 2)
Legal business name	Advocate Support Services, Inc.
Practice address	700 MELVIN AVE, STE. 9, Annapolis, MD, 21401
Phone	4109909110
Enumeration date	2007-01-02
Last updated in NPPES	2020-08-22

Authorized official

Name	James Crosson
Title	President
Phone	4103532968

Taxonomy & classification

Taxonomy code	Specialty	Primary	License	State
251S00000X	Community/Behavioral Health Agency	Primary	9331	MD

Copy-ready billing details

Provider: Advocate Support Services, Inc.
NPI: 1548327539
Taxonomy: 251S00000X (Community/Behavioral Health Agency)
Address: 700 MELVIN AVE, STE. 9, Annapolis, MD, 21401

Providers at this address

NPI	Name	Type	Specialty	Location
1790723989	Mary Mcallister	Individual	Anesthesiology Physician	Annapolis, MD
1578502241	Kevin Malone	Individual	Anesthesiology Physician	Annapolis, MD
1609819325	John Mcallister	Individual	Anesthesiology Physician	Annapolis, MD
1326082348	Glenn Gilmor	Individual	Anesthesiology Physician	Annapolis, MD
1043255300	Eileen Hamill	Individual	Anesthesiology Physician	Annapolis, MD
1669417739	Mark Hamill	Individual	Anesthesiology Physician	Annapolis, MD
1518993716	A Walman	Individual	Anesthesiology Physician	Annapolis, MD
1306872916	Sohail Zaidi	Individual	Anesthesiology Physician	Annapolis, MD

Verify this record

Cross-check NPI 1548327539 against the authoritative CMS record: view Advocate Support Services, Inc. on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-08-22. Verify at npiregistry.cms.hhs.gov.

Where is Advocate Support Services, Inc. located?

The practice location on file with NPPES is in Annapolis, MD.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-08-22.