Individual provider Active NPI

Christopher Stewart Marnell

  • Cardiovascular Disease Physician
  • Morristown, NJ
National Provider Identifier
1629538079
Registry record updated Jul 9, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Cardiovascular Disease PhysicianTaxonomy code 207RC0000X
License
25MA12549800 Issued in NJ
Practice address
435 South St Ste 100
Morristown, NJ 07960-6455
Phone
(973) 267-3944
NPI assigned
Mar 21, 2019
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 9, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Cardiovascular Disease Physician 207RC0000X 25MA12549800 NJ Primary

Addresses

Primary practice location

435 South St Ste 100
Morristown, NJ 07960-6455

Mailing address

55 Fruit St
Boston, MA 02114-2621

Other practice location 1

435 South St Ste 120
Morristown, NJ 07960-6482
Phone (973) 290-1020

Other practice location 2

55 Fruit St
Boston, MA 02114-2696
Phone (617) 726-2000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NJ
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20250724000537 NJ Practitioner - Cardiovascular Disease (Cardiology) 6305175332 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Cardiovascular Disease (Cardiology)
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Practice Associates Medical GroupGroup PAC ID 5890703177, 1,412 clinicians

Practice addresses (Care Compare)

435 S St
Suite 100
Morristown, NJ 07960-6440
Phone (973) 267-3944

Hospital & facility affiliations

  • Morristown Medical Center Hospital, Morristown, NJ, CCN 310015
  • Newton Medical Center Hospital, Newton, NJ, CCN 310028
  • Chilton Medical Center Hospital, Pompton Plains, NJ, CCN 310017

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
25MA12549800NJMDCardiovascular Disease Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Practice Associates Medical Group CurrentSince Aug 4, 2025 Accepting new patients
Morristown Cardiology Assoc PA Cardiovascular Disease PastSince Jul 13, 2025 Accepting new patients

Locations

100 Madison Ave
Morristown, NJ 07960
Phone (973) 538-5210

465 South St
Ste 103
Morristown, NJ 07960
Phone (973) 971-7130

435 South St
Ste 120
Morristown, NJ 07960
Phone (973) 290-1020

435 South St
Ste 100
Morristown, NJ 07960
Phone (973) 267-3944

Organizations & group practices 2

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

Hospital & facility affiliations 3

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": "1553126400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752019200000",
    "number": "1629538079",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "55 FRUIT ST",
            "city": "BOSTON",
            "state": "MA",
            "postal_code": "021142621"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "435 SOUTH ST STE 100",
            "city": "MORRISTOWN",
            "state": "NJ",
            "postal_code": "079606455",
            "telephone_number": "973-267-3944"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "435 South St Ste 120",
            "address_purpose": "LOCATION",
            "city": "Morristown",
            "state": "NJ",
            "postal_code": "079606482",
            "country_code": "US",
            "telephone_number": "973-290-1020",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "55 Fruit St",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021142696",
            "country_code": "US",
            "telephone_number": "617-726-2000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "MARNELL",
        "first_name": "CHRISTOPHER",
        "middle_name": "STEWART",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-21",
        "last_updated": "2025-07-09",
        "certification_date": "2025-06-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "NJ",
            "license": "25MA12549800",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Morristown, NJ

Sources for this page

Verify at the official NPI Registry.