Dariusz J Nasiek, M.D.

Primary specialty

Anesthesiology PhysicianTaxonomy code 207L00000X

License

25MA06262500 Issued in NJ

Practice address

350 Boulevard
Passaic, NJ 07055-2840

Phone

(973) 365-4300

NPI assigned

Aug 12, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 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

Interventional Pain ManagementAlso: Anesthesiology

Education

Other, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Anesthesiology and Pain Professional Practice LLCGroup PAC ID 0042390676, 2 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Interoperability endpoints

• Direct secure messaging: dariusz.nasiek@direct.hobokenumc.md

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.

• Anesthesiology and Pain Professional Practice, LLC

  • Specialist
  • Saddle Brook, NJ
  • NPI 1194904888
  Medicare reassignment Care Compare group NPD Authorized official
• Humc Opco LLC

  • General Acute Care Hospital
  • Hoboken, NJ
  • NPI 1043475668
  NPD
• County Wide Anesthesia Group, LLC

  • Specialist
  • Paterson, NJ
  • NPI 1568465979
  NPD (past)
• C.M.I.S.S., PC

  • Ambulatory Surgical Clinic/Center
  • Utica, NY
  • NPI 1124161088
  NPD (past)
• Copps Medical PC

  • Pain Medicine (Physical Medicine & Rehabilitation) Physician
  • New Hartford, NY
  • NPI 1871636720
  NPD (past)

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

{
    "created_epoch": "1123804800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1285636852",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 343",
            "city": "MIDLAND PARK",
            "state": "NJ",
            "postal_code": "074320343",
            "telephone_number": "201-804-2800"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "350 BOULEVARD",
            "city": "PASSAIC",
            "state": "NJ",
            "postal_code": "070552840",
            "telephone_number": "973-365-4300"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NASIEK",
        "first_name": "DARIUSZ",
        "middle_name": "J",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-08-12",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "NJ",
            "license": "25MA06262500",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0040932",
            "state": "NJ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

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• Jacqueline Nakhla
• Sanjna Namasivayam
• Natalie Velazquez OD and Associates Inc
• Fiorella M Navarro Mendoza, RDN
• Michele Needle, OTR
• Shira Neger, SLP
• Abigail Nelken

• Anesthesiology Physician in Passaic, NJ
• Providers in Passaic, NJ by specialty
• Anesthesiology Physician in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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.