JOHN ANDREW KNOPF MD
NPI 1487116349
Radiology - Diagnostic Radiology in Lawrenceville, GA
About John Andrew Knopf Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN ANDREW KNOPF MD (NPI 1487116349) is an individual diagnostic radiology provider in Lawrenceville, Georgia, licensed in Georgia (103721) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Memorial University Medical Center, and maintains 5 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 5
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
John Andrew Knopf 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
3Medicare enrollment records show John Knopf reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Gainesville, GA 30501
- Reassigned Medicare billing, Georgia enrollment
- 170 clinicians in this Medicare group
Gainesville, GA 30501
- Reassigned Medicare billing, Georgia enrollment
- 161 clinicians in this Medicare group
Savannah, GA 31404
- Reassigned Medicare billing, Georgia and South Carolina enrollments
- Also billed through NPI 1922338656 (South Carolina)
- 46 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.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Memorial University Medical Center
Acute Care Hospitals · Savannah, GAMemorial Health Meadows Hospital
Acute Care Hospitals · Vidalia, GAEffingham Health System
Critical Access Hospitals · Springfield, GAHilton Head Regional Medical Center
Acute Care Hospitals · Hilton Head Island, SCCoastal Carolina Hospital
Acute Care Hospitals · Hardeeville, SCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30046 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAWRENCEVILLE, GA 30046
LAWRENCEVILLE, GA 30046
LAWRENCEVILLE, GA 30046
LAWRENCEVILLE, GA 30046
LAWRENCEVILLE, GA 30046
LAWRENCEVILLE, GA 30046
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 Knopf's NPI number?
The NPI number for John Knopf is 1487116349. It was assigned to this individual provider in the NPPES registry on April 1, 2019.
Where is John Knopf located?
John Knopf practices at 665 Duluth Hwy Ste 401, Lawrenceville, GA 30046. The listed phone number is (912) 659-6806.
What is John Knopf's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is John Knopf enrolled in Medicare?
Yes. John Knopf 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 Knopf's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Knopf reassigns Medicare benefits to 3 organizations: The Longstreet Clinic, PC (Gainesville, GA), Northeast Georgia Community Physicians LLC (Gainesville, GA) and Atlantic Radiology Associates, LLC (Savannah, GA). 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 Knopf's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Knopf accept?
Health plans from Alliant Health Plans, Inc. and Oscar Insurance Company list John Knopf 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 Knopf affiliated with any hospitals?
According to CMS data, John Knopf is affiliated with Memorial University Medical Center, Memorial Health Meadows Hospital, Effingham Health System, Hilton Head Regional Medical Center and Coastal Carolina Hospital.
When was this NPI record last updated?
The NPPES record for John Knopf was last updated on September 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# John Andrew Knopf, MD · NPI 1487116349
Diagnostic Radiology physician in Lawrenceville, Georgia. Individual provider, active in the CMS NPPES registry since April 1, 2019.
## Identity
- **NPI:** 1487116349 (Entity type: Individual)
- **Enumerated:** April 1, 2019
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** 103721 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 665 DULUTH HWY STE 401, Lawrenceville, GA 30046-4303
- **Phone:** (912) 659-6806
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): The Longstreet Clinic, PC (NPI 1326019977, Gainesville, GA); Northeast Georgia Community Physicians LLC (NPI 1881583730, Gainesville, GA); Atlantic Radiology Associates, LLC (NPI 1033136080, Savannah, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Medical College Of Georgia School Of Medicine, class of 2019
## Record status
- **NPPES last updated:** September 25, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1487116349) · Data from the CMS NPPES public registry.