What is John Knopf's NPI number?

John Knopf's National Provider Identifier (NPI) is 1487116349, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Knopf's specialty?

John Knopf is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).

Where is John Knopf located?

John Knopf's practice location on file with NPPES is 665 Duluth Hwy Ste 401, Lawrenceville, GA 30046-4303.

What is John Knopf's phone number?

The practice phone number listed in the NPPES registry for John Knopf is (912) 659-6806.

Does John Knopf accept Medicare?

John Knopf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is John Knopf's NPI active?

Yes — John Knopf's NPI (1487116349) is active in the NPPES registry as of the last update on 2025-09-25.

IndividualActiveAccepts Medicare

John Knopf, MD

NPI 1487116349 · Diagnostic Radiology Physician · Lawrenceville, GA

Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)

John Knopf, MD is a Diagnostic Radiology Physician provider in Lawrenceville, GA (NPI 1487116349).

Provider details

NPI number: 1487116349
Entity type: Individual
Primary specialty: Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: No
License: 103721 (GA)

Specialties & taxonomies

Diagnostic Radiology PhysicianPrimary2085R0202XLicense 103721 (GA)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(75/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
7 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
6 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

665 Duluth Hwy Ste 401

Lawrenceville, GA 30046-4303

Phone: (912) 659-6806

Approximate (ZIP-level) locationGet directions

More GA providers

Mailing address

Po Box 1190

Lawrenceville, GA 30046-1190

Additional practice locations (5)

1270 Friendship Rd
Braselton, GA 30517-5608
Phone: (770) 535-9391
Fax: (770) 533-4701
801 Austin Drive
Demorest, GA 30535-4513
Phone: (770) 535-9391
Fax: (770) 533-4701
835 Austin Drive
Demorest, GA 30535-4513
Phone: (770) 535-9391
Fax: (770) 533-4701
655 Jesse Jewell Pkwy Se
Gainesville, GA 30501-3854
Phone: (770) 535-9391
Fax: (770) 533-4701
725 Jesse Jewell Pkwy Se
Gainesville, GA 30501-3834
Phone: (770) 535-9391
Fax: (770) 533-4701

Enumerated: 2019-04-01
Last updated: 2025-09-25
Certified: 2025-09-25

Frequently asked questions

What is John Knopf's NPI number?: John Knopf's National Provider Identifier (NPI) is 1487116349, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is John Knopf's specialty?: John Knopf is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
Where is John Knopf located?: John Knopf's practice location on file with NPPES is 665 Duluth Hwy Ste 401, Lawrenceville, GA 30046-4303.
What is John Knopf's phone number?: The practice phone number listed in the NPPES registry for John Knopf is (912) 659-6806.
Does John Knopf accept Medicare?: John Knopf is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is John Knopf's NPI active?: Yes — John Knopf's NPI (1487116349) is active in the NPPES registry as of the last update on 2025-09-25.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.