Kenneth J Rieger, M.D.

Primary specialty

Orthopaedic Surgery PhysicianTaxonomy code 207X00000X

License

25MA08296300 Issued in NJ

Practice address

40 Main St
Chatham, NJ 07928-2431

Phone

(973) 635-0800

Fax

(973) 635-6254

NPI assigned

Jul 15, 2006

Last updated

Feb 18, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 15

Electronic endpoints 1

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

Specialty

Orthopedic Surgery

Education

Columbia University College of Physicians and Surgeons, 2001

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

New Jersey Spine Center, LLCGroup PAC ID 5092785030, 11 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Atlantic Visiting Nurse Home health agency, Morristown, NJ, CCN 317054
• Morristown Medical Center Hospital, Morristown, NJ, CCN 310015
• Newton Medical Center Hospital, Newton, NJ, CCN 310028
• Kessler Rehab Center Inpatient rehabilitation facility, West Orange, NJ, CCN 313025

Merit-based Incentive Payment System (MIPS)

Final score

70.01 of 100Reported as group

Quality

55.95

Promoting interoperability

77

Improvement activities

40

Cost

63.25

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: krieger@njspinecenter.medentdirect.com

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.

• New Jersey Spine Center, LLC

  • Specialist
  • Chatham, NJ
  • NPI 1881632461
  Medicare reassignment Care Compare group NPD
• New Jersey Spine Center, LLC

  • Durable Medical Equipment & Medical Supplies
  • Chatham, NJ
  • NPI 1285443127
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Ahs Hospital Corp

  dba Newton Medical Center

  • General Acute Care Hospital
  • Newton, NJ
  • NPI 1790789212
  Care Compare affiliation
• Ahs Hospital Corp.

  dba Morristown Medical Center

  • General Acute Care Hospital
  • Morristown, NJ
  • NPI 1053384776
  Care Compare affiliation
• Ahs Hospital Corp.

  dba Atlantic Home Care & Hospice

  • Home Health Agency
  • Morristown, NJ
  • NPI 1962479667
  Care Compare affiliation
• Kessler Institute for Rehabilitation Inc

  dba Kessler Rehabilitation Center

  • Rehabilitation Hospital
  • West Orange, NJ
  • NPI 1013919620

  Inpatient rehabilitation facility

  Care Compare affiliation

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1152921600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1771372800000",
    "number": "1275559700",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "40 MAIN ST",
            "city": "CHATHAM",
            "state": "NJ",
            "postal_code": "079282431",
            "telephone_number": "973-635-0800",
            "fax_number": "973-635-6254"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "40 MAIN ST",
            "city": "CHATHAM",
            "state": "NJ",
            "postal_code": "079282431",
            "telephone_number": "973-635-0800",
            "fax_number": "973-635-6254"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "70 Sparta Ave Ste 202",
            "address_purpose": "LOCATION",
            "city": "Sparta",
            "state": "NJ",
            "postal_code": "078711760",
            "country_code": "US",
            "telephone_number": "973-635-0800",
            "fax_number": "973-635-3137",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RIEGER",
        "first_name": "KENNETH",
        "middle_name": "J",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-07-15",
        "last_updated": "2026-02-18",
        "certification_date": "2026-02-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "NJ",
            "license": "25MA08296300",
            "primary": true
        },
        {
            "code": "207XS0117X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Orthopaedic Surgery of the Spine",
            "state": "NJ",
            "license": "25MA08579500",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM",
            "identifier": "000000485768",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CSR",
            "identifier": "01062330B",
            "state": "IN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PASSPORT ADVANTAGE",
            "identifier": "2785649000",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PASSPORT ADVANTAGE (UOA)",
            "identifier": "2785663000",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PHYSICIAN LICENSE",
            "identifier": "40285",
            "state": "KY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "64125370",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PASSPORT (SPINE INSTITUTE",
            "identifier": "50012858",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DEA",
            "identifier": "BR9816717",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PHYS.LICENSE",
            "identifier": "01062330A",
            "state": "IN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "LICENSE",
            "identifier": "25MA08296300",
            "state": "NJ"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PASSPORT (UNIV ORTHO ASSO",
            "identifier": "50012859",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DEA",
            "identifier": "BR9641172",
            "state": "IN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "ANTHEM (UNIV ORTHO ASSOC)",
            "identifier": "000000495770",
            "state": "KY"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200828910",
            "state": "IN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "P00384745",
            "state": "KY"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "krieger@njspinecenter.medentdirect.com",
            "affiliation": "Y",
            "affiliationName": "New Jersey Spine Center, LLC",
            "address_1": "40 Main St",
            "city": "Chatham",
            "state": "NJ",
            "country_code": "US",
            "postal_code": "079282431",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Orthopaedic Surgery Physician in Chatham, NJ
• Providers in Chatham, NJ by specialty
• Orthopaedic Surgery Physician in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 18, 2026; 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.

Verify at the official NPI Registry.