Sandra Mary Warren, PA-C

Primary specialty

Medical Physician AssistantTaxonomy code 363AM0700X

License

C0004198 Issued in MD

Practice address

9199 Reisterstown Rd Ste 203B
Owings Mills, MD 21117-4593

Phone

(410) 441-3922

Fax

(410) 441-3923

NPI assigned

Nov 11, 2009

Last updated

Oct 6, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other names 1

• Sandra Mary Zellhofer Former name

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

Credentials

Physician Assistant

State licenses

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1257897600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1759708800000",
    "number": "1578890646",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "9199 REISTERSTOWN RD STE 203B",
            "city": "OWINGS MILLS",
            "state": "MD",
            "postal_code": "211174593",
            "telephone_number": "410-441-3922",
            "fax_number": "410-441-3923"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "9199 REISTERSTOWN RD STE 203B",
            "city": "OWINGS MILLS",
            "state": "MD",
            "postal_code": "211174593",
            "telephone_number": "410-441-3922",
            "fax_number": "410-441-3923"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WARREN",
        "first_name": "SANDRA",
        "middle_name": "MARY",
        "credential": "PA-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2009-11-11",
        "last_updated": "2025-10-06",
        "certification_date": "2025-10-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "MD",
            "license": "C0004198",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SANDRA",
            "last_name": "ZELLHOFER",
            "middle_name": "MARY",
            "credential": "PA",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Danielle Waranch, DDS
• Jasmine Ware
• Trista E Ware
• Joanne Stephanie Warren, MD
• Michele Disiree Warren, FNP
• Washington Open MRI Inc
• Melissa Katherine Waters, RN
• Nickol Weaver, FNP-C
• Ronald Leroy Webb, MA, LCPC
• Jessica Morgan Weber, DDS

• Medical Physician Assistant in Owings Mills, MD
• Providers in Owings Mills, MD by specialty
• Medical Physician Assistant in Maryland

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 6, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.