Mark J Vanviegen, ENP/FNP-BC

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

F350568-01 Issued in NY

Practice address

266 Elmwood Ave Ste 428
Buffalo, NY 14222-2202

Phone

(919) 426-1756

NPI assigned

Oct 11, 2005

Sex

Male

Sole proprietor

No

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

Specialties & licenses 10

Addresses

Other identifiers 2

Medicare fee-for-service enrollment

Enrolled in LA, FL, WI, NY, CT, MA, KY7 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 7

Specialty

Nurse Practitioner

Education

Other, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Kentucky Em-I Medical Services PSCGroup PAC ID 8325001175, 42 clinicians

Physicians Medical Associates New York PCGroup PAC ID 7618310368, 100 clinicians

Cep America LLCGroup PAC ID 6608056171, 995 clinicians

Buffalo Emergency Associates LLPGroup PAC ID 4981502515, 54 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Baptist Health Paducah Hospital, Paducah, KY, CCN 180104

Merit-based Incentive Payment System (MIPS)

Final score

87.3 of 100Reported as group

Quality

70.94

Improvement activities

40

Cost

92.94

Merit-based Incentive Payment System (MIPS)

Final score

100 of 100Reported as group

Promoting interoperability

100

Improvement activities

40

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: mvanviegen4079605@direct.trinity-health.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.

• Physicians Medical Associates New York PC

  • Emergency Medicine Physician
  • Syracuse, NY
  • NPI 1073386421
  Medicare reassignment Care Compare group NPD
• Cep America LLC

  • Emergency Medicine Physician
  • Waterbury, CT
  • NPI 1700681202
  Medicare reassignment Care Compare group NPD
• Buffalo Emergency Associates LLP

  • Emergency Medicine Physician
  • Williamsville, NY
  • NPI 1508816521
  Medicare reassignment Care Compare group
• Kentucky Em-I Medical Services PSC

  • Emergency Medicine Physician
  • Ashland, KY
  • NPI 1356848121
  Medicare reassignment Care Compare group
• Ellenville Emergency Medical Associates PLLC

  • Emergency Medicine Physician
  • Ellenville, NY
  • NPI 1477945905
  Medicare reassignment NPD
• Emergency Medical Association of New York PC

  • Emergency Medicine Physician
  • Cortlandt Manor, NY
  • NPI 1952356347

  Nurse Practitioner

  Medicare reassignment NPD
• Nyack Emergency Medical Association PLLC

  • Emergency Medicine Physician
  • Nyack, NY
  • NPI 1174627293

  Nurse Practitioner

  Medicare reassignment NPD
• Acs Primary Care Physicians Louisiana PC

  • Emergency Medicine Physician
  • Alexandria, LA
  • NPI 1306889092

  Nurse Practitioner

  Medicare reassignment NPD
• Cep America, LLC

  • Emergency Medicine Physician
  • Miramar Beach, FL
  • NPI 1295442614
  Medicare reassignment NPD
• Emergency Medicine Services of FL, LLC

  • Emergency Medicine Physician
  • Aventura, FL
  • NPI 1043917180
  Medicare reassignment NPD
• Vituity-Massachusetts PLLC

  • Emergency Medicine Physician
  • Springfield, MA
  • NPI 1083404313
  Medicare reassignment NPD
• Hudson Vista Physician Services PC

  • Internal Medicine Physician
  • Newburgh, NY
  • NPI 1164749115
  NPD

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

• Baptist Healthcare System, Inc

  • General Acute Care Hospital
  • Paducah, KY
  • NPI 1730264128
  Care Compare affiliation

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

{
    "created_epoch": "1128988800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780531200000",
    "number": "1477541779",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "266 ELMWOOD AVE",
            "address_2": "PMG 428",
            "city": "BUFFALO",
            "state": "NY",
            "postal_code": "14222",
            "telephone_number": "919-426-1756"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "266 ELMWOOD AVE STE 428",
            "city": "BUFFALO",
            "state": "NY",
            "postal_code": "142222202",
            "telephone_number": "919-426-1756"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "VANVIEGEN",
        "first_name": "MARK",
        "middle_name": "J",
        "credential": "ENP/FNP-BC",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-11",
        "last_updated": "2026-06-04",
        "certification_date": "2026-06-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "NC",
            "license": "149084",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "KY",
            "license": "4053567",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "NY",
            "license": "F350568-01",
            "primary": true
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "MA",
            "license": "RN10029872",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "NY",
            "license": "F350568",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "KY",
            "license": "4053567",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "NC",
            "license": "005002286",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "WI",
            "license": "11846",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "CT",
            "license": "14586",
            "primary": false
        },
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "FL",
            "license": "NP3029682",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "NP0297",
            "state": "SC"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAILROAD MEDICARE",
            "identifier": "P00398888",
            "state": "NC"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Pieter Schuyler Vanhorn, MPAS, RPA-C
• Erin Vanosch
• Philip Vanpeursem, PA-C
• Alyssa Vanstee, COTA/L
• Monica Dawyot Vansteenburg
• Vanessa Gloria Vanzo, PHARMD
• Sarosh Vaqar, M.D.
• Francisco A Vaquero D.C P.C., D.C.
• Cristina Varallo Rodriguez, M.D.
• Margaret Varga

• Nurse Practitioner in Buffalo, NY
• Providers in Buffalo, NY by specialty
• Nurse Practitioner in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 4, 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.