Mark Douglas Baker, MD

Primary specialty

Pediatric Emergency Medicine (Emergency Medicine) PhysicianTaxonomy code 207PP0204X

License

25MA10666500 Issued in NJ

Practice address

125 Paterson St
New Brunswick, NJ 08901-1962

Phone

(732) 235-7991

NPI assigned

Nov 22, 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 3

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mbaker52582@epicdirect.rwjbh.org

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.

• Rutgers Health-RWJ Pediatric Critical Care

  • Pediatric Emergency Medicine (Pediatrics) Physician
  • New Brunswick, NJ
  • NPI 1346322732
  Medicare reassignment NPD
• Rutgers Health-RWJ Pediatric Critical Care

  • Family Medicine Physician
  • New Brunswick, NJ
  • NPI 1780766527
  Medicare reassignment NPD
• Rwjbh Emergency Medicine Associates, LLC

  • Emergency Medicine Physician
  • Somerset, NJ
  • NPI 1912510041

  Pediatric Emergency Medicine

  Medicare reassignment NPD
• Rutgers Health-RWJ Primary Medicine Group

  • Internal Medicine Physician
  • New Brunswick, NJ
  • NPI 1659475283
  Medicare reassignment
• Rutgers Health-RWJ Pediatric Critical Care

  • Anatomic Pathology & Clinical Pathology Physician
  • New Brunswick, NJ
  • NPI 1538173539
  NPD

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

{
    "created_epoch": "1132617600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769385600000",
    "number": "1568445872",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "125 PATERSON ST",
            "city": "NEW BRUNSWICK",
            "state": "NJ",
            "postal_code": "089011962",
            "telephone_number": "732-235-7991"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "125 PATERSON ST",
            "city": "NEW BRUNSWICK",
            "state": "NJ",
            "postal_code": "089011962",
            "telephone_number": "732-235-7991"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "BAKER",
        "first_name": "MARK",
        "middle_name": "DOUGLAS",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-22",
        "last_updated": "2026-01-26",
        "certification_date": "2026-01-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207PP0204X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine, Pediatric Emergency Medicine",
            "state": "NJ",
            "license": "25MA10666500",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "PENDING",
            "state": "FL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "25MA10666500",
            "state": "NJ"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "352281401",
            "state": "MD"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Kathryn Bagnardi, PA-C
• Kandy Bahadur
• Nicole Elizabeth Baisley, MSPT
• Jasmeet Singh Bajaj, MD
• Muhammad Talha Bajwa
• Neshi Bakshi
• Archana Balamohan, M.D.
• Monica K Balani
• Pooja Nilesh Balar, MD
• Carleton E Baler, MD

• Pediatric Emergency Medicine (Emergency Medicine) Physician in New Brunswick, NJ
• Providers in New Brunswick, NJ by specialty
• Pediatric Emergency Medicine (Emergency Medicine) Physician in New Jersey

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 26, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.