Individual provider Active NPI

James L Nielsen, MD

  • Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician
  • Pensacola, FL
National Provider Identifier
1295735710
Registry record updated Apr 3, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianTaxonomy code 208G00000X
License
ME65879 Issued in FL
Practice address
5147 N 9TH Ave Ste 318
Pensacola, FL 32504-8710
Phone
(850) 416-2965
Fax
(850) 416-1833
NPI assigned
Jul 27, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 3, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X H2643 TX
Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician 208G00000X ME65879 FL Primary

Addresses

Primary practice location

5147 N 9TH Ave Ste 318
Pensacola, FL 32504-8710

Mailing address

4205 Belfort Rd Ste 4015
Jacksonville, FL 32216-3623
Phone (904) 450-6063

Other practice location 1

2604 Saint Michael Dr Ste 425
Texarkana, TX 75503-2378
Phone (903) 614-5600

Other practice location 2

601 7th St S Ste 205
St Petersburg, FL 33701-4748
Phone (727) 893-6234

Other identifiers 2

IdentifierTypeStateIssuer
3756050 00MedicaidFL
009409040MedicaidAL

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address him@marshfieldclinichealthsystem.cernerdirect.com Other

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in FL, IA, TX, WI, CO, ND6 enrollments
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 6

Enrollment IDStateProvider typePAC IDDetails
I20100330000374 FL Practitioner - Thoracic SurgeryPractitioner - Cardiac Surgery 1355422767 Reassigns benefits to 5 organizations
I20200319002083 IA Practitioner - Cardiac SurgeryPractitioner - Thoracic Surgery 1355422767 Reassigns benefits to 1 organization
I20210728001180 TX Practitioner - Thoracic Surgery 1355422767 Reassigns benefits to 2 organizations
I20210831002073 WI Practitioner - Cardiac SurgeryPractitioner - Thoracic Surgery 1355422767 Reassigns benefits to 2 organizations
I20250313002701 CO Practitioner - Cardiovascular Disease (Cardiology) 1355422767 Reassigns benefits to 1 organization
I20250415001929 ND Practitioner - Thoracic SurgeryPractitioner - Cardiac Surgery 1355422767 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Thoracic SurgeryAlso: Cardiac Surgery
Education
Other, 1986
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sanford Medical Center FargoGroup PAC ID 8426967803, 1,210 clinicians
Sacred Heart Health System IncGroup PAC ID 3779491386, 373 clinicians
Lee Health System IncGroup PAC ID 9335672146, 1,381 clinicians

Practice addresses (Care Compare)

1220 Sheyenne St
West Fargo, ND 58078-2637
Phone (701) 234-4445

4501 N Davis Hwy
Suite a
Pensacola, FL 32504-2724
Phone (850) 476-9000

5151 N 9TH Ave
Suite 200
Pensacola, FL 32504-8721
Phone (850) 416-4188

5225 23Rd Ave S
Fargo, ND 58104-7927
Phone (701) 417-2575

9981 S Healthpark Dr
Fort Myers, FL 33908-3618
Phone (239) 343-2606

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Coronary artery bypass graft (CABG)24

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
H2643TXMDThoracic Surgery (Cardiothoracic Vascular Surgery) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Sanford Medical Center Fargo Current Accepting new patients
MCHS Hospitals Inc Current Accepting new patients
Lee Health System Inc CurrentSince Mar 1, 2025 Accepting new patients
Ohi West Medical Group, LLC CurrentSince Jan 1, 2026 Accepting new patients
Halifax Healthcare Systems Inc CurrentSince Mar 12, 2025 Accepting new patients
Sanford Medical Center Fargo CurrentSince Mar 7, 2025 Accepting new patients
St Luke's Methodist Hospital CurrentSince Apr 21, 2025 Accepting new patients
Christus Trinity Clinic Texas CurrentSince Oct 6, 2025 Accepting new patients
Sacred Heart Health System, Inc. Current Accepting new patients
Sanford Medical Center Fargo CurrentSince Mar 7, 2025 Accepting new patients
Marshfield Clinic Inc CurrentSince Aug 16, 2021 Accepting new patients
MCHS Hospitals Inc CurrentSince Aug 16, 2021 Accepting new patients
Christus Trinity Clinic Texas CurrentSince Oct 6, 2025 Accepting new patients
Poudre Valley Medical Group, LLC Thoracic Surgery (Cardiothoracic Vascular Surgery) CurrentSince Jun 1, 2025 Accepting new patients
J. Mark Morales, M.D., PA CurrentSince Aug 1, 2021 Accepting new patients
Lee Health System Inc CurrentSince Mar 1, 2025 Accepting new patients
St. Luke's Methodist Hospital CurrentSince Apr 21, 2025 Accepting new patients
Florida Hospital Physician Group Inc CurrentSince Aug 19, 2021 Accepting new patients
MCHS Hospitals Inc CurrentSince Aug 16, 2021 Accepting new patients
Ohi West Medical Group, LLC CurrentSince Jan 1, 2026 Accepting new patients
Poudre Valley Medical Group, LLC Thoracic Surgery (Cardiothoracic Vascular Surgery) CurrentSince Jun 1, 2025 Accepting new patients
Sacred Heart Health System Inc CurrentSince Mar 1, 2025 Accepting new patients
Sacred Heart Health System, Inc. CurrentSince Mar 1, 2025 Accepting new patients
Trinity Regional Medical Center Thoracic Surgery (Cardiothoracic Vascular Surgery) Past Accepting new patients
Munroe Hma HMPN LLC Thoracic Surgery (Cardiothoracic Vascular Surgery) PastSince Aug 19, 2021 Accepting new patients
Cardiovascular Care Providers, Inc. Past Accepting new patients

Locations (25 of 27)

4404 Barranca Ln
Castle Rock, CO 80104
Phone (720) 733-5260

2695 Rocky Mountain Ave
Ste 150
Loveland, CO 80538
Phone (970) 624-2412

400 W 16th St
Pueblo, CO 81003
Phone (719) 584-4000

1600 N Grand Ave
Ste 500
Pueblo, CO 81003
Phone (719) 545-0663

1619 N Greenwood St
Ste 106
Pueblo, CO 81003
Phone (719) 595-7760

1138 Country Club Blvd
Cape Coral, FL 33990
Phone (239) 424-1900

303 N Clyde Morris Blvd
Daytona Beach, FL 32114
Phone (386) 425-2285

9981 S Healthpark Dr
Ste 2
Fort Myers, FL 33908

9981 S Healthpark Dr
Fort Myers, FL 33908
Phone (239) 332-5344

9981 S Healthpark Dr
Ste 156
Fort Myers, FL 33908
Phone (239) 343-5333

4205 Belfort Rd
Ste 4015
Jacksonville, FL 32216
Phone (904) 296-5691

8550 NE 138th Ln
Ste 401
Lady Lake, FL 32159
Phone (352) 347-2315

1720 SE 16th Ave
Ste 303
Ocala, FL 34471
Phone (352) 368-1661

4501 N Davis Hwy
Ste A
Pensacola, FL 32503
Phone (850) 476-9000

5147 N 9th Ave
Ste 318
Pensacola, FL 32504
Phone (850) 416-2965

601 7th St S
Ste 205
St Petersburg, FL 33701
Phone (727) 893-6234

701 6th St S
St Petersburg, FL 33701
Phone (727) 450-1144

13901 Bruce B Downs Blvd
Tampa, FL 33613
Phone (813) 615-7260

2700 Healing Way
Ste 310
Wesley Chapel, FL 33543
Phone (813) 779-1209

1026 A Ave NE
Cedar Rapids, IA 52402
Phone (319) 369-5970

202 10th St SE
Ste 225
Cedar Rapids, IA 52403
Phone (319) 364-7101

1220 Sheyenne St
West Fargo, ND 58078
Phone (701) 234-4445

1224 3rd St
Ste 1
Corpus Christi, TX 78404
Phone (361) 854-0201

2604 Saint Michael Dr
Ste 425
Texarkana, TX 75503
Phone (903) 614-5600

630 S Fleishel Ave
Tyler, TX 75701
Phone (903) 510-8888

Networks

  • Freedom Health HMO Network
  • Optimum HealthCare HMO Network

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/EGIFBA
  • Direct secure messaging: jnielsen473150@direct.leememorial.org
  • Direct secure messaging: him@marshfieldclinichealthsystem.cernerdirect.com
  • Direct secure messaging: james.nielsen@marshfieldclinichealthsystem.cernerdirect.com

Organizations & group practices 27

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.

View all 27

Hospital & facility affiliations 4

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": "1122422400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775174400000",
    "number": "1295735710",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4205 BELFORT RD STE 4015",
            "city": "JACKSONVILLE",
            "state": "FL",
            "postal_code": "322163623",
            "telephone_number": "904-450-6063",
            "fax_number": "904-539-4091"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5147 N 9TH AVE STE 318",
            "city": "PENSACOLA",
            "state": "FL",
            "postal_code": "325048710",
            "telephone_number": "850-416-2965",
            "fax_number": "850-416-1833"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2604 Saint Michael Dr Ste 425",
            "address_purpose": "LOCATION",
            "city": "Texarkana",
            "state": "TX",
            "postal_code": "755032378",
            "country_code": "US",
            "telephone_number": "903-614-5600",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "601 7th St S Ste 205",
            "address_purpose": "LOCATION",
            "city": "St Petersburg",
            "state": "FL",
            "postal_code": "337014748",
            "country_code": "US",
            "telephone_number": "727-893-6234",
            "fax_number": "727-893-6111",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "NIELSEN",
        "first_name": "JAMES",
        "middle_name": "L",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-27",
        "last_updated": "2026-04-03",
        "certification_date": "2026-04-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "TX",
            "license": "H2643",
            "primary": false
        },
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "FL",
            "license": "ME65879",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "3756050 00",
            "state": "FL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "009409040",
            "state": "AL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "him@marshfieldclinichealthsystem.cernerdirect.com",
            "affiliation": "N",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "Other",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Other",
            "address_1": "1000 N Oak Ave",
            "city": "Marshfield",
            "state": "WI",
            "country_code": "US",
            "postal_code": "544495703",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Pensacola, FL

Sources for this page

Verify at the official NPI Registry.