Individual provider Active NPI

William Reeves

  • Physician Assistant
  • Baltimore, MD
National Provider Identifier
1093539272
Registry record updated Oct 22, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Physician AssistantTaxonomy code 363A00000X
License
C0009709 Issued in MD
Practice address
900 S Caton Ave
Baltimore, MD 21229-5201
Phone
(667) 234-6000
NPI assigned
Nov 13, 2024
Last updated
Oct 22, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Oct 22, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Physician Assistant 363A00000X C0009709 MD Primary

Addresses

Primary practice location

900 S Caton Ave
Baltimore, MD 21229-5201

Mailing address

1122 Holy Cross Rd
Street, MD 21154-1116
Phone (443) 866-4452

Other practice location 1

5100 Eastern Ave
Baltimore, MD 21224-2772
Phone (410) 814-4500

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address MDExchange@patientfirst.com Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD, DC2 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20250102000090 MD Practitioner - Physician Assistant 0143757245 Reassigns benefits to 2 organizations
I20251105000153 DC Practitioner - Physician Assistant 0143757245 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2024
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Patient First Maryland Medical Group PLLCGroup PAC ID 4385538735, shared by 26 NPIs, 258 clinicians

Practice addresses (Care Compare)

5100 Eastern Ave
Bayview
Baltimore, MD 21224-2772
Phone (410) 814-4500

8206 Georgia Ave
Silver Spring, MD 20910-4519
Phone (301) 960-4682

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Physician Assistant

State licenses

LicenseStateTypeSpecialty
C0009709MDMDPhysician Assistant

Practice roles

OrganizationSpecialtyStatusNew patients
Cep America LLC CurrentSince Dec 20, 2024 Accepting new patients
Patient First Maryland Medical Group PLLC CurrentSince Sep 4, 2025 Accepting new patients
Patient First Maryland Medical Group PLLC CurrentSince Sep 4, 2025 Accepting new patients
Patient First Maryland Medical Group PLLC CurrentSince Sep 4, 2025 Accepting new patients
Cep America LLC CurrentSince Dec 20, 2024 Accepting new patients
Patient First Maryland Medical Group, PLLC Current Accepting new patients

Locations

2100 Powell St
Ste 400
Emeryville, CA 94608
Phone (510) 350-2638

1601 Cummins Dr
Ste D
Modesto, CA 95358
Phone (510) 851-7423

5100 Eastern Ave
Baltimore, MD 21224
Phone (410) 814-4500

900 S Caton Ave
Baltimore, MD 21229
Phone (410) 368-3120

10210 Reisterstown Rd
Owings Mills, MD 21117
Phone (410) 902-6776

726 Rockville Pike
Rockville, MD 20852
Phone (240) 238-0411

8206 Georgia Ave
Silver Spring, MD 20910
Phone (301) 960-4682

2855 Crain Hwy
Waldorf, MD 20601
Phone (240) 427-1926

Organizations & group practices 7

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1731456000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1761091200000",
    "number": "1093539272",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1122 HOLY CROSS RD",
            "city": "STREET",
            "state": "MD",
            "postal_code": "211541116",
            "telephone_number": "443-866-4452"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "900 S CATON AVE",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212295201",
            "telephone_number": "667-234-6000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5100 Eastern Ave",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212242772",
            "country_code": "US",
            "telephone_number": "410-814-4500",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "REEVES",
        "first_name": "WILLIAM",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2024-11-13",
        "last_updated": "2025-10-22",
        "certification_date": "2025-10-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363A00000X",
            "taxonomy_group": "",
            "desc": "Physician Assistant",
            "state": "MD",
            "license": "C0009709",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "MDExchange@patientfirst.com",
            "affiliation": "N",
            "endpointDescription": "email",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "5100 Eastern Ave",
            "city": "Baltimore",
            "state": "MD",
            "country_code": "US",
            "postal_code": "212242772",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.