Active NPI
John Daniel McCadden, PA
- Medical Physician Assistant
- Baltimore, MD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Medical Physician Assistant
- License
- C0003374
- Practice address
- 4924 Campbell Blvd Ste 125
Baltimore, MD 21236-5921 - Phone
- (443) 461-1997
- NPI assigned
- Nov 14, 2006
- Last updated
- Jun 5, 2025
- Sex
- Male
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | MDExchange@patientfirstclinics.com | Health Information Exchange (HIE) |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in MD, DC
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 2
Care Compare profile
Medicare Care Compare- Specialty
- Physician Assistant
- Education
- Other, 2006
- Medicare assignment
- May accept Medicare assignment
- Group practices
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
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| MNR Industries LLC | Current | Accepting new patients | |
| MNR Industries, LLC | Current | Accepting new patients | |
| Medstar Medical Group II LLC | Current | Accepting new patients | |
| MNR Industries, LLC | Current | Accepting new patients | |
| Patient First Maryland Medical Group PLLC | Current | Accepting new patients | |
| Johns Hopkins University | Current | Accepting new patients | |
| Johns Hopkins University | Current | Accepting new patients | |
| Patient First Maryland Medical Group PLLC | Current | Accepting new patients | |
| Chesapeake Urology Associates LLC | Current | Accepting new patients | |
| MNR Industries, LLC | Current | Accepting new patients | |
| Chesapeake Urology Associates, LLC | Current | Accepting new patients | |
| Patient First Maryland Medical Group, PLLC | Current | 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
- jmccadden1051027@direct.hopkinsmedicine.org
- 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.
-
dba Jhu - Anesthesia Pain MGMT
- Pain Medicine (Anesthesiology) Physician
- Baltimore, MD
- NPI 1922008549
-
- General Practice Physician
- Baltimore, MD
- NPI 1184046187
-
- Family Medicine Physician
- Silver Spring, MD
- NPI 1265866503
DC
-
- Family Medicine Physician
- Glen Allen, VA
- NPI 1962423632
MD
-
dba Chesapeake Oncology Hematology Associates
- Hematology & Oncology Physician
- Stevensville, MD
- NPI 1467337337
-
- Emergency Medicine Physician
- Bel Air, MD
- NPI 1285854026
-
- Urology Physician
- Owings Mills, MD
- NPI 1609823004
-
- Urology Physician
- Baltimore, MD
- NPI 1659196244
-
dba JHU - 4692 Millennium Drive - Physician
- Ophthalmology Physician
- Belcamp, MD
- NPI 1376342774
-
dba Jhu - Emergency Medicine
- Emergency Medicine Physician
- Baltimore, MD
- NPI 1386631810
Hospital & facility affiliations 2
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- Baltimore, MD
- NPI 1790700904
-
dba Johns Hopkins Bayview Care Center
- Chronic Disease Hospital
- Baltimore, MD
- NPI 1336251412
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 5, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.