GREGORY L. CHARLOP MD
NPI 1558449355
Anesthesiology in Marietta, GA
About Gregory L. Charlop Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY L. CHARLOP MD (NPI 1558449355) is an individual anesthesiology provider in Marietta, Georgia, licensed in California (A76196) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Gregory L. Charlop Md 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
9Medicare enrollment records show Gregory Charlop reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Atlanta, GA 30328
- Reassigned Medicare billing, Georgia enrollment
- 31 clinicians in this Medicare group
Atlanta, GA 30342
- Reassigned Medicare billing, Georgia enrollment
- 50 clinicians in this Medicare group
Atlanta, GA 30342
- Reassigned Medicare billing, Georgia enrollment
- 201 clinicians in this Medicare group
Gainesville, GA 30501
- Reassigned Medicare billing, Georgia enrollment
- 489 clinicians in this Medicare group
Macon, GA 31201
- Reassigned Medicare billing, Georgia enrollment
- 66 clinicians in this Medicare group
Milledgeville, GA 31061
- Reassigned Medicare billing, Georgia enrollment
- 63 clinicians in this Medicare group
Savannah, GA 31404
- Reassigned Medicare billing, Georgia enrollment
- 468 clinicians in this Medicare group
Bradenton, FL 34208
- Reassigned Medicare billing, Georgia enrollment
- 386 clinicians in this Medicare group
Addison, TX 75001
- Reassigned Medicare billing, Georgia and Texas enrollments
- 9 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.
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 Gregory Charlop's NPI number?
The NPI number for Gregory Charlop is 1558449355. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Gregory Charlop located?
Gregory Charlop practices at 3645 High Green Dr, Marietta, GA 30068. The listed phone number is (650) 281-1297.
What is Gregory Charlop's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Gregory Charlop enrolled in Medicare?
Yes. Gregory Charlop 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 Gregory Charlop's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Charlop reassigns Medicare benefits to 9 organizations: Precision Anesthesia Partners LLC (Atlanta, GA), North Perimeter Anesthesia LLC (Atlanta, GA), Concordia Anesthesiology, Inc (Atlanta, GA), Gi Anesthesia Of Georgia LLC (Gainesville, GA), Overwatch Anesthesia (Macon, GA) and 4 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 Gregory Charlop's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Charlop accept?
Health plans from Oscar Health and Oscar Insurance Company list Gregory Charlop 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.
When was this NPI record last updated?
The NPPES record for Gregory Charlop was last updated on November 2, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.
# Gregory L. Charlop, MD · NPI 1558449355
Anesthesiology physician in Marietta, Georgia. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1558449355 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A76196 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3645 HIGH GREEN DR, Marietta, GA 30068-2530
- **Phone:** (650) 281-1297
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Precision Anesthesia Partners LLC (NPI 1083284335, Atlanta, GA); North Perimeter Anesthesia LLC (NPI 1457716516, Atlanta, GA); Concordia Anesthesiology, Inc (NPI 1619296464, Atlanta, GA); Gi Anesthesia Of Georgia LLC (NPI 1326569187, Gainesville, GA); Overwatch Anesthesia (NPI 1528616810, Macon, GA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, Geffen School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** November 2, 2021
- **Other identifiers:** Medicaid 00A761960 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1558449355) · Data from the CMS NPPES public registry.