Individual provider Active NPI

John Daniel McCadden, PA

  • Medical Physician Assistant
  • Baltimore, MD
National Provider Identifier
1639241912
Registry record updated Jun 5, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Medical Physician AssistantTaxonomy code 363AM0700X
License
C0003374 Issued in MD
Practice address
4924 Campbell Blvd Ste 125
Baltimore, MD 21236-5921
Phone
(443) 461-1997
NPI assigned
Nov 14, 2006
Last updated
Jun 5, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 5, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Physician Assistant 363AM0700X C0003374 MD Primary

Addresses

Primary practice location

4924 Campbell Blvd Ste 125
Baltimore, MD 21236-5921

Mailing address

6201 Greenleigh Ave
Middle River, MD 21220-2004
Phone (410) 933-0000

Other practice location 1

1800 Orleans St
Baltimore, MD 21287-0010
Phone (410) 502-2037

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address MDExchange@patientfirstclinics.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
I20070228000136 MD Practitioner - Physician Assistant 6305948944 Reassigns benefits to 6 organizations
I20140426000026 DC Practitioner - Physician Assistant 6305948944 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Physician Assistant
Education
Other, 2006
Medicare assignment
May accept Medicare assignment
Group practices
MNR Industries, LLCGroup PAC ID 7416908843, 142 clinicians
Johns Hopkins UniversityGroup PAC ID 8921903147, 2,886 clinicians

Practice addresses (Care Compare)

1354 Eastern Blvd
Expresscare of Essex
Essex, MD 21221-3423
Phone (443) 231-5203

1470 Martin Blvd
Middle River, MD 21220-4105
Phone (443) 231-5203

1505 E Churchville Rd
Bel Air, MD 21014-4742

2006 Rock Spring Rd
Forest Hill, MD 21050-2607
Phone (410) 569-0044

4940 Eastern Ave
Baltimore, MD 21224-2735
Phone (410) 550-0100

5 Bel Air S Pkwy
Suite 1535
Bel Air, MD 21015-3816
Phone (410) 569-0044

600 N Wolf St
Baltimore, MD 21287-0005
Phone (410) 955-5000

600 N Wolfe St
Blalock 266
Baltimore, MD 21287-0005
Phone (410) 502-4340

6201 Greenleigh Ave
Middle River, MD 21220-2004

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
MNR Industries LLC Current Accepting new patients
MNR Industries, LLC CurrentSince Apr 1, 2024 Accepting new patients
Medstar Medical Group II LLC CurrentSince Apr 1, 2021 Accepting new patients
MNR Industries, LLC CurrentSince Apr 1, 2024 Accepting new patients
Patient First Maryland Medical Group PLLC CurrentSince Jul 30, 2021 Accepting new patients
Johns Hopkins University CurrentSince Dec 5, 2022 Accepting new patients
Johns Hopkins University CurrentSince Dec 5, 2022 Accepting new patients
Patient First Maryland Medical Group PLLC CurrentSince Jul 30, 2021 Accepting new patients
Chesapeake Urology Associates LLC CurrentSince Aug 1, 2018 Accepting new patients
MNR Industries, LLC CurrentSince Apr 1, 2024 Accepting new patients
Chesapeake Urology Associates, LLC CurrentSince Aug 1, 2018 Accepting new patients
Patient First Maryland Medical Group, PLLC CurrentSince Jul 30, 2021 Accepting new patients

Locations

1800 Orleans St
Baltimore, MD 21287
Phone (410) 502-2037

4924 Campbell Blvd
Ste 125
Baltimore, MD 21236
Phone (443) 461-1997

4940 Eastern Ave
Baltimore, MD 21224

5601 Loch Raven Blvd
#3N
Baltimore, MD 21239
Phone (410) 532-3775

600 N Wolfe St
Baltimore, MD 21287

1505 E Churchville Rd
Bel Air, MD 21014
Phone (410) 420-6970

1505 E Churchville Rd
#A
Bel Air, MD 21014
Phone (410) 420-6970

6000 Laurel Bowie Rd
Bowie, MD 20715
Phone (301) 383-0330

6201 Greenleigh Ave
Middle River, MD 21220
Phone (410) 933-2704

504 E Ridgeville Blvd
#A
Mount Airy, MD 21771
Phone (301) 703-5452

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

10210 Reisterstown Rd
#12302
Owings Mills, MD 21117
Phone (410) 902-6776

1838 Greene Tree Rd
Ste 460
Pikesville, MD 21208
Phone (410) 581-8140

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

6701 N Charles St
Towson, MD 21204
Phone (443) 849-2000

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

5000 Cox Rd
Glen Allen, VA 23060
Phone (804) 822-4355

Interoperability endpoints

  • Direct secure messaging: jmccadden1051027@direct.hopkinsmedicine.org
  • Direct secure messaging: mdexchange@patientfirstclinics.com

Organizations & group practices 16

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.

View all 16

Hospital & facility affiliations 2

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": "1163462400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1749081600000",
    "number": "1639241912",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6201 GREENLEIGH AVE",
            "city": "MIDDLE RIVER",
            "state": "MD",
            "postal_code": "212202004",
            "telephone_number": "410-933-0000",
            "fax_number": "410-500-4266"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4924 CAMPBELL BLVD STE 125",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212365921",
            "telephone_number": "443-461-1997"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1800 Orleans St",
            "address_purpose": "LOCATION",
            "city": "Baltimore",
            "state": "MD",
            "postal_code": "212870010",
            "country_code": "US",
            "telephone_number": "410-502-2037",
            "fax_number": "410-955-0737",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MCCADDEN",
        "first_name": "JOHN",
        "middle_name": "DANIEL",
        "credential": "PA",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-14",
        "last_updated": "2025-06-05",
        "certification_date": "2025-06-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363AM0700X",
            "taxonomy_group": "",
            "desc": "Physician Assistant, Medical",
            "state": "MD",
            "license": "C0003374",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "MDExchange@patientfirstclinics.com",
            "affiliation": "N",
            "endpointDescription": "email",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "address_1": "4924 Campbell Blvd Ste 125",
            "city": "Baltimore",
            "state": "MD",
            "country_code": "US",
            "postal_code": "212365921",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.