Gregory V Hahn, MD

Primary specialty

Pediatric Orthopaedic Surgery PhysicianTaxonomy code 207XP3100X

License

ME78419 Issued in FL

Practice address

625 6TH Ave S Ste 450
St Petersburg, FL 33701-4629

Phone

(727) 898-2663

Fax

(727) 568-6836

NPI assigned

Oct 12, 2005

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 3

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in FL

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: ghahn734843@direct.hopkinsmedicine.org
• Direct secure messaging: ghahn@1224.direct.myezyaccess.com
• Direct secure messaging: ghahn188757@orlandohealth.medalliesdirect.net

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.

• Children'S Orthopaedic & Scoliosis Surgery Associates, LLP

  • Pediatric Orthopaedic Surgery Physician
  • St Petersburg, FL
  • NPI 1184609851
  Medicare reassignment NPD
• Orlando Health, Inc.

  • General Acute Care Hospital
  • Orlando, FL
  • NPI 1184709057
  NPD

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

{
    "created_epoch": "1129075200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1747872000000",
    "number": "1396733341",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "625 6TH AVE S STE 450",
            "city": "ST PETERSBURG",
            "state": "FL",
            "postal_code": "337014629",
            "telephone_number": "727-898-2663",
            "fax_number": "727-568-6836"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "625 6TH AVE S STE 450",
            "city": "ST PETERSBURG",
            "state": "FL",
            "postal_code": "337014629",
            "telephone_number": "727-898-2663",
            "fax_number": "727-568-6836"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "8318 Market St",
            "address_purpose": "LOCATION",
            "city": "Lakewood Ranch",
            "state": "FL",
            "postal_code": "342025137",
            "country_code": "US",
            "telephone_number": "727-898-2663",
            "fax_number": "727-568-6836",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3440 W Dr Martin Luther King Jr Blvd Ste 200",
            "address_purpose": "LOCATION",
            "city": "Tampa",
            "state": "FL",
            "postal_code": "336076223",
            "country_code": "US",
            "telephone_number": "813-879-2663",
            "fax_number": "813-872-0286",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "HAHN",
        "first_name": "GREGORY",
        "middle_name": "V",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2005-10-12",
        "last_updated": "2025-05-22",
        "certification_date": "2025-05-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "FL",
            "license": "ME78419",
            "primary": false
        },
        {
            "code": "207XS0117X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Orthopaedic Surgery of the Spine",
            "state": "FL",
            "license": "ME78419",
            "primary": false
        },
        {
            "code": "207XP3100X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Pediatric Orthopaedic Surgery",
            "state": "FL",
            "license": "ME78419",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "256641900",
            "state": "FL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Patricia Haffner, PTA
• Abigail Hagan, MT-BC
• Amanda L. Hagan, PT
• Jami Lynn Hagan, SLP
• Kimberly Evette Haggins
• Mina Haider, MD
• Allison Haig, PSY.D.
• Hal Bishop, LCSW, PA
• Roseann Halback, OTR/L
• Michael R. Halbert, PHARM.D.

• Pediatric Orthopaedic Surgery Physician in St Petersburg, FL
• Providers in St Petersburg, FL by specialty
• Pediatric Orthopaedic Surgery Physician in Florida

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 22, 2025; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.