NPIMap

Individual provider Active NPI

Geoffrey Flynn McCrossan, M.D.

  • Internal Medicine Physician
  • Dallas, TX
National Provider Identifier
1316488695
Registry record updated Apr 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
ME177488 Issued in FL
Practice address
5323 Harry Hines Blvd
Dallas, TX 75390-7201
Phone
(214) 590-8000
NPI assigned
Mar 20, 2017
Last updated
Apr 15, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 15, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X NU
Internal Medicine Physician 207R00000X S9936 TX
Internal Medicine Physician 207R00000X ME177488 FL Primary

Addresses

Primary practice location

5323 Harry Hines Blvd
Dallas, TX 75390-7201

Mailing address

5323 Harry Hines Blvd
Dallas, TX 75390-7201

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX, FL2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20210413000960 TX Practitioner - Internal Medicine 5799193751 Reassigns benefits to 1 organization
I20260113003374 FL Practitioner - Internal Medicine 5799193751 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal Medicine
Education
Other, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Austin Geriatric Specialists PLLCGroup PAC ID 5092770511, 59 clinicians
Millennium Physician Group LLCGroup PAC ID 9830244433, 976 clinicians

Practice addresses (Care Compare)

1108 Lavaca St
Suite 110 320
Austin, TX 78701-2172
Phone (512) 477-4088

19531 Cochran Blvd
Port Charlotte, FL 33948-2081
Phone (941) 255-3535

Hospital & facility affiliations

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of nail tissue1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
ME177488FLMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Millennium Physician Group LLC CurrentSince Jan 1, 2026 Accepting new patients
Austin Geriatric Specialists, PLLC CurrentSince May 8, 2021 Accepting new patients
Millennium Physician Group LLC Internal Medicine CurrentSince Jan 1, 2026 Accepting new patients
Hamilton County Hospital District Past Accepting new patients
Stratford Hospital District Past Accepting new patients
Hni Medical Services Internal Medicine PastSince May 8, 2021 Accepting new patients
Stratford Hospital District Past Accepting new patients
Hamilton County Hospital District Past Accepting new patients
South Limestone Hospital District Past Accepting new patients
South Limestone Hospital District Past Accepting new patients

Locations

19531 Cochran Blvd
Pt Charlotte, FL 33948
Phone (941) 255-3535

1108 Lavaca St
Ste 110320
Austin, TX 78701
Phone (512) 482-0390

11406 Rustic Rock Dr
Austin, TX 78750
Phone (512) 251-3915

Interoperability endpoints

  • Direct secure messaging: geoffrey.mccrossan.1@25850.direct.athenahealth.com
  • Direct secure messaging: gmccrossan72029@direct.phhs.org
  • FHIR API: https://api.platform.athenahealth.com/18292/brand/1/csg/1/fhir/r4
  • FHIR API: https://api.platform.athenahealth.com/25850/brand/1/csg/1/fhir/r4

Organizations & group practices 10

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.

Hospital & facility affiliations 8

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": "1489968000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776211200000",
    "number": "1316488695",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5323 HARRY HINES BLVD",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "753907201"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5323 HARRY HINES BLVD",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "753907201",
            "telephone_number": "214-590-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MCCROSSAN",
        "first_name": "GEOFFREY",
        "middle_name": "FLYNN",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2017-03-20",
        "last_updated": "2026-04-15",
        "certification_date": "2026-04-15",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "NU",
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "S9936",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "FL",
            "license": "ME177488",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Dallas, TX

Sources for this page

Verify at the official NPI Registry.