Alden Paige Gregston, MD

Primary specialty

Ophthalmology PhysicianTaxonomy code 207W00000X

License

V2089 Issued in TX

Practice address

2394 H G Mosley Pkwy
Longview, TX 75604-3661

Phone

(903) 234-0771

NPI assigned

Mar 27, 2019

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in TX

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

Ophthalmology

Education

Texas a & M University System, HSC, College of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Charles L. Heaton, M.D. P.a.Group PAC ID 1557257615, 18 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Christus Good Shepherd Medical Center Hospital, Longview, TX, CCN 450032

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
• Direct secure messaging: agregston1273384@ahs.direct-ci.com
• Direct secure messaging: agregston548854@direct.medicine.duke.edu
• Direct secure messaging: agregston110424@direct.phhs.org
• Direct secure messaging: alden.gregston.p1@direct.heatoneye.nextgenshare.com

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.

• Charles L. Heaton , M.D. P.a.

  • Ophthalmology Physician
  • Tyler, TX
  • NPI 1528127172
  Medicare reassignment Care Compare group NPD
• Heaton Laser and Surgery Center L L C

  • Ambulatory Surgical Clinic/Center
  • Tyler, TX
  • NPI 1720081664
  NPD

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

• Christus Good Shepherd Medical Center

  • General Acute Care Hospital
  • Longview, TX
  • NPI 1124092036
  Care Compare affiliation

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

{
    "created_epoch": "1553644800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1787702400000",
    "number": "1538620174",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3355 EARL CAMPBELL PKWY",
            "city": "TYLER",
            "state": "TX",
            "postal_code": "757018435",
            "telephone_number": "903-526-0444",
            "fax_number": "903-595-6650"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2394 H G MOSLEY PKWY",
            "city": "LONGVIEW",
            "state": "TX",
            "postal_code": "756043661",
            "telephone_number": "903-234-0771"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "3355 Earl Campbell Pkwy",
            "address_purpose": "LOCATION",
            "city": "Tyler",
            "state": "TX",
            "postal_code": "757018435",
            "country_code": "US",
            "telephone_number": "903-526-0444",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GREGSTON",
        "first_name": "ALDEN",
        "middle_name": "PAIGE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2019-03-27",
        "last_updated": "2026-08-26",
        "certification_date": "2026-08-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207W00000X",
            "taxonomy_group": "",
            "desc": "Ophthalmology",
            "state": "TX",
            "license": "V2089",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jennifer Greer, RN
• Gregg County Health Dept.
• Gregory K Wacasey, OD
• Gregory K. Wacasey OD PLLC
• Gregory N Payne, MD, PA
• John E Greifenkamp, MD
• Jonathan David Greifenkamp, MD
• John C Griffin, D.P.M.
• Meredith Marie Griffin
• Patricia Griffin, FNP-C

• Ophthalmology Physician in Longview, TX
• Providers in Longview, TX by specialty
• Ophthalmology Physician in Texas

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