NPIMap

Individual provider Active NPI

Michael Riskalla

  • Internal Medicine Physician
  • Newark, NJ
National Provider Identifier
1538628631
Registry record updated Mar 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
25MA12664900 Issued in NJ
Practice address
201 Lyons Ave
Newark, NJ 07112-2027
Phone
(973) 926-7000
NPI assigned
Mar 18, 2019
Last updated
Mar 20, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 20, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X 25MA12664900 NJ Primary
Hospitalist Physician 208M00000X 294844 MA

Addresses

Primary practice location

201 Lyons Ave
Newark, NJ 07112-2027

Mailing address

1 General St
Lawrence, MA 01841-2997

Other practice location 1

1 General St
Lawrence, MA 01841-2961
Phone (978) 683-4000

Other practice location 2

55 Fogg Rd
Weymouth, MA 02190-2432
Phone (781) 624-8000

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MA, NY, NJ3 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 3

Enrollment IDStateProvider typePAC IDDetails
I20220923002529 MA Practitioner - Internal Medicine 2264817428 Reassigns benefits to 3 organizations
I20250730003396 NY Practitioner - HospitalistPractitioner - Internal Medicine 2264817428 Reassigns benefits to 1 organization
I20260520002755 NJ Practitioner - Internal Medicine 2264817428 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2018
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Rwjbh Emergency Medicine Associates, LLCGroup PAC ID 0941612840, 826 clinicians

Practice addresses (Care Compare)

1 Robert Wood Johnson PL
New Brunswick, NJ 08901-1928
Phone (732) 828-3000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
25MA12664900NJMDInternal Medicine Physician
294844MAMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Mass General Brigham Medical Group Northern Massachusetts Inc Internal Medicine CurrentSince Nov 17, 2023 Accepting new patients
Cayuga Medical Associates, PC Internal Medicine CurrentSince Jun 1, 2025 Accepting new patients
North Shore Medical Center, Inc. Current Accepting new patients
Lawrence General Hospital Internal Medicine Current Accepting new patients
Lawrence General Hospital CurrentSince Aug 22, 2022 Accepting new patients
Lawrence General Hospital CurrentSince Aug 22, 2022 Accepting new patients
Coastal Medical Associates Hospitalist CurrentSince Dec 1, 2023 Accepting new patients
Jersey City Medical Center Past Accepting new patients

Locations

1 Hutchinson Dr
Danvers, MA 01923
Phone (978) 739-6950

1 General St
Lawrence, MA 01841
Phone (978) 946-8103

81 Highland Ave
Salem, MA 01970
Phone (978) 354-4009

55 Fogg Rd
Weymouth, MA 02190
Phone (781) 340-4293

310 Taughannock Blvd
Fl 4
Ithaca, NY 14850
Phone (607) 269-0100

Interoperability endpoints

  • Direct secure messaging: riskalla.michael.nsmc@direct.partners.masshiway.net

Organizations & group practices 10

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 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": "1552867200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773964800000",
    "number": "1538628631",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 GENERAL ST",
            "city": "LAWRENCE",
            "state": "MA",
            "postal_code": "018412997"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "201 LYONS AVE",
            "city": "NEWARK",
            "state": "NJ",
            "postal_code": "071122027",
            "telephone_number": "973-926-7000"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 General St",
            "address_purpose": "LOCATION",
            "city": "Lawrence",
            "state": "MA",
            "postal_code": "018412961",
            "country_code": "US",
            "telephone_number": "978-683-4000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "55 Fogg Rd",
            "address_purpose": "LOCATION",
            "city": "Weymouth",
            "state": "MA",
            "postal_code": "021902432",
            "country_code": "US",
            "telephone_number": "781-624-8000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RISKALLA",
        "first_name": "MICHAEL",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2019-03-18",
        "last_updated": "2026-03-20",
        "certification_date": "2026-03-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "NJ",
            "license": "25MA12664900",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MA",
            "license": "294844",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Newark, NJ

Sources for this page

Verify at the official NPI Registry.