NPIMap

Individual provider Active NPI

John T Gantomasso, DO

  • Anesthesiology Physician
  • Macon, GA
National Provider Identifier
1396064481
Registry record updated Jul 20, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
OS017509 Issued in PA
Practice address
777 Hemlock St
Macon, GA 31201-2102
Phone
(478) 633-2147
Fax
(478) 742-9670
NPI assigned
May 27, 2010
Last updated
Jul 20, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 20, 2026

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

Specialties & licenses 4

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 336060 LA
Anesthesiology Physician 207L00000X 076027 GA
Anesthesiology Physician 207L00000X OS017509 PA Primary
Pediatric Anesthesiology Physician 207LP3000X 336060 LA

Addresses

Primary practice location

777 Hemlock St
Macon, GA 31201-2102

Mailing address

PO Box 551420
Fort Lauderdale, FL 33355-1420
Phone (800) 243-3839

Other practice location 1

4801 Ambassador Caffery Pkwy
Lafayette, LA 70508-6917
Phone (337) 470-2574

Other practice location 2

1514 Jefferson Hwy
New Orleans, LA 70121-2429
Phone (504) 842-3755

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in GA, SC, LA, PA4 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 4

Enrollment IDStateProvider typePAC IDDetails
I20160816001484 GA Practitioner - Anesthesiology 3870887755 Reassigns benefits to 5 organizations
I20220509001535 SC Practitioner - Anesthesiology 3870887755 Reassigns benefits to 2 organizations
I20230617000300 LA Practitioner - AnesthesiologyPractitioner - Pediatric Medicine 3870887755 Reassigns benefits to 2 organizations
I20240508002024 PA Practitioner - Anesthesiology 3870887755 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Other, 2010
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Medstream Anesthesia PLLCGroup PAC ID 7416198049, 571 clinicians
Hospitalist Medicine Physicians of Georgia - TCS, PCGroup PAC ID 3971024910, 112 clinicians

Practice addresses (Care Compare)

300 Singleton Ridge Rd
Conway, SC 29526-9142
Phone (843) 347-7111

710 Ctr St
Columbus, GA 31901-1527
Phone (706) 571-1000

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
076027GAMDAnesthesiology Physician
336060LAMDAnesthesiology Physician
OS017509PAMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Ochsner Clinic LLC CurrentSince May 15, 2023 Accepting new patients
Hospitalist Medicine Physicians of Georgia - TCS, PC Anesthesiology CurrentSince Dec 30, 2025 Accepting new patients
American Anesthesiology Associates of Georgia, LLC Anesthesiology CurrentSince Aug 1, 2016 Accepting new patients
Ochsner Clinic LLC Current Accepting new patients
North American Partners in Anesthesia, Pennsylvania , LLC Anesthesiology CurrentSince Apr 6, 2024 Accepting new patients
Medstream Anesthesia PLLC Anesthesiology CurrentSince Apr 26, 2022 Accepting new patients
TMC-West Georgia Anesthesia Associates Inc. Anesthesiology CurrentSince Jun 1, 2021 Accepting new patients
Hospitalist Medicine Physicians of Alabama-TCS Inc Anesthesiology CurrentSince Sep 15, 2021 Accepting new patients
Ochsner Clinic LLC CurrentSince May 15, 2023 Accepting new patients
Premier Anesthesia of Georgia LLC Anesthesiology CurrentSince Jul 17, 2018 Accepting new patients
Youngs Professional Services LLC CurrentSince Aug 1, 2024 Accepting new patients
Atlantic Coast Anesthesia Services P.C. Anesthesiology CurrentSince May 1, 2022 Accepting new patients

Locations

200 Medical Center Dr SW
Fort Payne, AL 35968
Phone (256) 845-3150

705 Dixie St
Carrollton, GA 30117
Phone (770) 812-9666

710 Center St
Columbus, GA 31901
Phone (706) 571-1000

2701 N Decatur Rd
Decatur, GA 30033
Phone (404) 501-1000

777 Hemlock St
Macon, GA 31201
Phone (478) 474-5600

11 Upper Riverdale Rd SW
Riverdale, GA 30274
Phone (770) 897-7277

1700 Medical Way
Snellville, GA 30078
Phone (770) 978-4229

601 Dallas Hwy
Villa Rica, GA 30180
Phone (770) 456-3000

4801 Ambassador Caffery Pkwy
Lafayette, LA 70508
Phone (337) 470-2000

1100 Andre St
Ste 300
New Iberia, LA 70563
Phone (337) 364-9225

1514 Jefferson Hwy
New Orleans, LA 70121

1305 Walt Whitman Rd
Ste 300
Melville, NY 11747
Phone (516) 370-3796

206 E Brown St
East Stroudsburg, PA 18301
Phone (570) 420-4951

8835 Germantown Ave
Philadelphia, PA 19118
Phone (215) 248-8227

300 Singleton Ridge Rd
Conway, SC 29526
Phone (843) 234-6946

1021 Cipriana Dr
Ste 100
Myrtle Beach, SC 29572
Phone (843) 449-7885

809 82nd Pkwy
Myrtle Beach, SC 29572
Phone (843) 291-7182

2669 Kinard St
Newberry, SC 29108
Phone (803) 276-7570

Interoperability endpoints

  • Direct secure messaging: jgantomasso5316961@direct.casso.us.com

Organizations & group practices 12

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 13

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

View all 13

NPI Registry JSON

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

{
    "created_epoch": "1274918400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784505600000",
    "number": "1396064481",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 551420",
            "city": "FORT LAUDERDALE",
            "state": "FL",
            "postal_code": "333551420",
            "telephone_number": "800-243-3839",
            "fax_number": "855-851-4405"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "777 HEMLOCK ST",
            "city": "MACON",
            "state": "GA",
            "postal_code": "312012102",
            "telephone_number": "478-633-2147",
            "fax_number": "478-742-9670"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4801 Ambassador Caffery Pkwy",
            "address_purpose": "LOCATION",
            "city": "Lafayette",
            "state": "LA",
            "postal_code": "705086917",
            "country_code": "US",
            "telephone_number": "337-470-2574",
            "fax_number": "337-470-2605",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1514 Jefferson Hwy",
            "address_purpose": "LOCATION",
            "city": "New Orleans",
            "state": "LA",
            "postal_code": "701212429",
            "country_code": "US",
            "telephone_number": "504-842-3755",
            "fax_number": "504-842-2786",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GANTOMASSO",
        "first_name": "JOHN",
        "middle_name": "T",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2010-05-27",
        "last_updated": "2026-07-20",
        "certification_date": "2026-07-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "LA",
            "license": "336060",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "GA",
            "license": "076027",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "PA",
            "license": "OS017509",
            "primary": true
        },
        {
            "code": "207LP3000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology, Pediatric Anesthesiology",
            "state": "LA",
            "license": "336060",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Macon, GA

Sources for this page

Verify at the official NPI Registry.