DR. JOHN T GANTOMASSO DO
NPI 1396064481
Anesthesiology in Macon, GA
About Dr. John T Gantomasso Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN T GANTOMASSO DO (NPI 1396064481) is an individual anesthesiology provider in Macon, Georgia, licensed in Pennsylvania (OS017509) and active in the NPI registry since May 2010. He is enrolled in Medicare PECOS, is affiliated with Conway Medical Center, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John T Gantomasso Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
10Medicare enrollment records show John Gantomasso reassigns Medicare billing to 10 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stone Mountain, GA 30087
- Reassigned Medicare billing, Georgia enrollment
- 650 clinicians in this Medicare group
Snellville, GA 30078
- Reassigned Medicare billing, Georgia enrollment
- 156 clinicians in this Medicare group
Columbus, GA 31901
- Reassigned Medicare billing, Georgia enrollment
- 165 clinicians in this Medicare group
Carrollton, GA 30117
- Reassigned Medicare billing, Georgia enrollment
- 121 clinicians in this Medicare group
Brentwood, TN 37027
- Reassigned Medicare billing, Alabama enrollment
- 65 clinicians in this Medicare group
Myrtle Beach, SC 29572
- Reassigned Medicare billing, South Carolina enrollment
- Medicare enrollment name: Atlantic Coast Anesthesia Services PC
- 258 clinicians in this Medicare group
Bogalusa, LA 70427
- Reassigned Medicare billing, Louisiana enrollment
- 4,559 clinicians in this Medicare group
New Iberia, LA 70563
- Reassigned Medicare billing, Louisiana enrollment
- 470 clinicians in this Medicare group
Richardson, TX 75082
- Reassigned Medicare billing, South Carolina enrollment
- 553 clinicians in this Medicare group
Melville, NY 11747
- Reassigned Medicare billing, Pennsylvania enrollment
- 928 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Conway Medical Center
Acute Care Hospitals · Conway, SCOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MACON, GA 31201
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Gantomasso's NPI number?
The NPI number for John Gantomasso is 1396064481. It was assigned to this individual provider in the NPPES registry on May 27, 2010.
Where is John Gantomasso located?
John Gantomasso practices at 777 Hemlock St, Macon, GA 31201. The listed phone number is (478) 633-2147.
What is John Gantomasso's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Gantomasso enrolled in Medicare?
Yes. John Gantomasso is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for John Gantomasso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Gantomasso reassigns Medicare benefits to 10 organizations: American Anesthesiology Associates Of Georgia, LLC (Stone Mountain, GA), Premier Anesthesia Of Georgia LLC (Snellville, GA), Hospitalist Medicine Physicians Of Georgia - Tcs, PC (Columbus, GA), Tmc-West Georgia Anesthesia Associates Inc. (Carrollton, GA), Hospitalist Medicine Physicians Of Alabama-Tcs Inc (Brentwood, TN) and 5 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Gantomasso's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Gantomasso accept?
Health plans from HMO Louisiana, Oscar Health and Oscar Insurance Company list John Gantomasso as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Gantomasso affiliated with any hospitals?
According to CMS data, John Gantomasso is affiliated with Conway Medical Center.
When was this NPI record last updated?
The NPPES record for John Gantomasso was last updated on July 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John T Gantomasso, DO · NPI 1396064481
Anesthesiology physician in Macon, Georgia. Individual provider, active in the CMS NPPES registry since May 27, 2010.
## Identity
- **NPI:** 1396064481 (Entity type: Individual)
- **Enumerated:** May 27, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** OS017509 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 777 HEMLOCK ST, Macon, GA 31201-2102
- **Phone:** (478) 633-2147 · **Fax:** (478) 742-9670
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 10 organizations under Medicare reassignment (form CMS-855R): American Anesthesiology Associates Of Georgia, LLC (NPI 1528068673, Stone Mountain, GA); Premier Anesthesia Of Georgia LLC (NPI 1811403207, Snellville, GA); Hospitalist Medicine Physicians Of Georgia - Tcs, PC (NPI 1033926191, Columbus, GA); Tmc-West Georgia Anesthesia Associates Inc. (NPI 1740252022, Carrollton, GA); Hospitalist Medicine Physicians Of Alabama-Tcs Inc (NPI 1750989877, Brentwood, TN); and 5 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** July 20, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1396064481) · Data from the CMS NPPES public registry.