Heather Erwin, WHNP-BC

Primary specialty

Family Nurse PractitionerTaxonomy code 363LF0000X

License

123567 Issued in AR

Practice address

4003 Massard Rd
Fort Smith, AR 72903-6221

Phone

(479) 434-4747

Fax

(479) 434-4949

NPI assigned

Jan 15, 2020

Last updated

Aug 7, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in AR

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 1

Specialty

Nurse Practitioner

Education

Other, 2021

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Mercy Hospital WaldronGroup PAC ID 5597658005, shared by 5 NPIs, 12 clinicians

River Valley Primary Care ServicesGroup PAC ID 0042274276, 39 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Mercy Hospital Waldron Hospital, Waldron, AR, CCN 041305
• Mercy Hospital Fort Smith Hospital, Fort Smith, AR, CCN 040062

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: herwin172828@directc.mercy.net

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.

• River Valley Primary Care Services

  • Federally Qualified Health Center (FQHC)
  • Ratcliff, AR
  • NPI 1952349003
  Medicare reassignment Care Compare group NPD (past)
• Mercy Clinic Fort Smith Communities

  • Multi-Specialty Clinic/Center
  • Fort Smith, AR
  • NPI 1902073620
  Medicare reassignment NPD
• Mercy Hospital Booneville

  • Certified Registered Nurse Anesthetist
  • Booneville, AR
  • NPI 1083004733
  Medicare reassignment NPD
• Mercy Hospital Booneville

  • Critical Access Hospital
  • Booneville, AR
  • NPI 1992133714
  Medicare reassignment NPD
• Mercy Hospital Ozark

  • Critical Access Hospital
  • Ozark, AR
  • NPI 1275504128
  Medicare reassignment NPD
• Mercy Hospital Ozark

  • Emergency Care Clinic/Center
  • Ozark, AR
  • NPI 1881642767
  Medicare reassignment NPD
• Mercy Hospital Paris

  • Emergency Care Clinic/Center
  • Paris, AR
  • NPI 1518915321
  Medicare reassignment NPD
• Mercy Hospital Paris

  • Critical Access Hospital
  • Paris, AR
  • NPI 1760453633
  Medicare reassignment NPD
• Mercy Hospital Waldron

  • Emergency Care Clinic/Center
  • Waldron, AR
  • NPI 1730137134
  Medicare reassignment NPD
• Mercy Hospital Waldron

  • Critical Access Hospital
  • Waldron, AR
  • NPI 1912978875
  Medicare reassignment NPD
• Womens Center for Health and Wellness, PLLC

  • Gynecology Physician
  • Fort Smith, AR
  • NPI 1629565072
  Medicare reassignment NPD
• Mercy Clinic Fort Smith Communities

  • Endocrinology, Diabetes & Metabolism Physician
  • Fort Smith, AR
  • NPI 1790258002
  NPD

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

• Mercy Hospital Fort Smith

  • General Acute Care Hospital
  • Fort Smith, AR
  • NPI 1568433480
  Care Compare affiliation
• Mercy Hospital Waldron

  • Critical Access Hospital
  • Waldron, AR
  • NPI 1912978875
  Care Compare affiliation

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

{
    "created_epoch": "1579046400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786060800000",
    "number": "1740820950",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3000 ROGERS AVE",
            "city": "FORT SMITH",
            "state": "AR",
            "postal_code": "729014232",
            "telephone_number": "479-459-6528"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4003 MASSARD RD",
            "city": "FORT SMITH",
            "state": "AR",
            "postal_code": "729036221",
            "telephone_number": "479-434-4747",
            "fax_number": "479-434-4949"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3000 Rogers Ave",
            "address_purpose": "LOCATION",
            "city": "Fort Smith",
            "state": "AR",
            "postal_code": "729014232",
            "country_code": "US",
            "telephone_number": "479-459-6528",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7301 Rogers Ave",
            "address_purpose": "LOCATION",
            "city": "Fort Smith",
            "state": "AR",
            "postal_code": "729034100",
            "country_code": "US",
            "telephone_number": "479-314-6000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ERWIN",
        "first_name": "HEATHER",
        "credential": "WHNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-01-15",
        "last_updated": "2026-08-07",
        "certification_date": "2026-08-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "AR",
            "license": "123567",
            "primary": true
        },
        {
            "code": "363LW0102X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Women's Health",
            "state": "AR",
            "license": "123567",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Sierra English, QBHP
• Ennen Eye Center, P.a. (Ennen Eye Center)
• Randy M Ennen, M.D.
• Elizabeth Renee Eoff, M.S., CCC-SLP
• Nicole Ervin, MHPP
• Mayra Esquivel, MHPP
• Joseph Clint Estrada, PHARMD
• Meghan Leigh Estrada, PHARMD
• Alexander Ethington
• Charles W Eubanks, CRNA

• Family Nurse Practitioner in Fort Smith, AR
• Providers in Fort Smith, AR by specialty
• Family Nurse Practitioner in Arkansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 7, 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.