NPIMap

Individual provider Active NPI

Sivaram Rajan, MD

  • Orthopaedic Surgery Physician
  • Hackensack, NJ
National Provider Identifier
1073583746
Registry record updated Feb 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Orthopaedic Surgery PhysicianTaxonomy code 207X00000X
License
25MAO7423500 Issued in NJ
Practice address
211 Essex St
Hackensack, NJ 07601-3231
Phone
(551) 999-6433
NPI assigned
Jan 25, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Feb 18, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X 218115 MA
Orthopaedic Surgery Physician 207X00000X 12006 NH
Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X 25MA07423500 NJ
Orthopaedic Surgery Physician 207X00000X 25MAO7423500 NJ Primary

Addresses

Primary practice location

211 Essex St
Hackensack, NJ 07601-3231

Mailing address

1 Diamond Hill Rd
Berkeley Heights, NJ 07922-2104
Phone (908) 273-4300

Other practice location 1

211 Essex St
Suite 101
Hackensack, NJ 07601-3231
Phone (551) 999-6433

Other identifiers 2

IdentifierTypeStateIssuer
2018209MedicaidMA
30204220MedicaidNH

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20060928000346 NJ Practitioner - Orthopedic Surgery 3779577309 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Orthopedic Surgery
Education
Clvlnd Clinic Lerner College of Med of Case WSTN RSV University, 1997
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Summit Medical Group PAGroup PAC ID 5395642276, 1,204 clinicians

Practice addresses (Care Compare)

1 Diamond Hill Rd
Berkeley Heights, NJ 07922-2104
Phone (908) 273-4300

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Hip replacement1-10
Knee replacement26
Lower limb (leg) arthroscopy (minimally invasive joint repair)12
Upper limb (arm) arthroscopy (minimally invasive joint repair)86

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
218115MAMDOrthopaedic Surgery Physician
25MAO7423500NJMDOrthopaedic Surgery Physician
25MA07423500NJMDSports Medicine (Orthopaedic Surgery) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Summit Medical Group PA Orthopaedic Surgery CurrentSince Oct 18, 2021 Accepting new patients
Summit Medical Group PA CurrentSince Oct 18, 2021 Accepting new patients
James W Cahill MD LLC Orthopaedic Surgery PastSince Aug 23, 2015 Accepting new patients
Orthopaedic Surgical Associates of Lowell, P.C. Orthopaedic Surgery Past Accepting new patients
Summit Medical Group, Inc Past Accepting new patients

Locations

1 Diamond Hill Rd
Berkeley Heights, NJ 07922
Phone (908) 277-8868

211 Essex St
Ste 101
Hackensack, NJ 07601
Phone (551) 999-6433

150 Floral Ave
New Providence, NJ 07974
Phone (908) 588-3890

Interoperability endpoints

  • Direct secure messaging: sivaram.rajan.1@2983.direct.athenahealth.com

Organizations & group practices 5

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 8

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": "1138147200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771372800000",
    "number": "1073583746",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 DIAMOND HILL RD",
            "city": "BERKELEY HEIGHTS",
            "state": "NJ",
            "postal_code": "079222104",
            "telephone_number": "908-273-4300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "211 ESSEX ST",
            "city": "HACKENSACK",
            "state": "NJ",
            "postal_code": "076013231",
            "telephone_number": "551-999-6433"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "211 Essex St",
            "address_2": "SUITE 101",
            "address_purpose": "LOCATION",
            "city": "Hackensack",
            "state": "NJ",
            "postal_code": "076013231",
            "country_code": "US",
            "telephone_number": "551-999-6433",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RAJAN",
        "first_name": "SIVARAM",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-01-25",
        "last_updated": "2026-02-18",
        "certification_date": "2026-02-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "MA",
            "license": "218115",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NH",
            "license": "12006",
            "primary": false
        },
        {
            "code": "207XX0005X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Sports Medicine",
            "state": "NJ",
            "license": "25MA07423500",
            "primary": false
        },
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NJ",
            "license": "25MAO7423500",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2018209",
            "state": "MA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "30204220",
            "state": "NH"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Hackensack, NJ

Sources for this page

Verify at the official NPI Registry.