DR. JOHN ROBERT GUZEK MD
NPI 1861460545
Internal Medicine in Scranton, PA
About Dr. John Robert Guzek Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN ROBERT GUZEK MD (NPI 1861460545) is an individual internal medicine provider in Scranton, Pennsylvania, licensed in Pennsylvania (MD022387E) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Geisinger-community Medical Center, and is a graduate of University Of Pittsburgh School Of Medicine (1978).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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 Robert Guzek 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
8Medicare enrollment records show John Guzek reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Scranton, PA 18510
- Reassigned Medicare billing, Pennsylvania enrollment
- 124 clinicians in this Medicare group
Scranton, PA 18510
- Reassigned Medicare billing, Pennsylvania enrollment
- 98 clinicians in this Medicare group
Dunmore, PA 18510
- Reassigned Medicare billing, Pennsylvania enrollment
- 4,429 clinicians in this Medicare group
Wilkes Barre, PA 18764
- Reassigned Medicare billing, Pennsylvania enrollment
- 78 clinicians in this Medicare group
Hanover, MD 21076
- Reassigned Medicare billing, Pennsylvania enrollment
- 41 clinicians in this Medicare group
Ligonier, PA 15658
- Reassigned Medicare billing, Pennsylvania enrollment
- 2,881 clinicians in this Medicare group
Whiteriver, AZ 85941
- Reassigned Medicare billing, Texas enrollment
- 214 clinicians in this Medicare group
Scottsdale, AZ 85254
- Reassigned Medicare billing, Pennsylvania enrollment
- 383 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 5
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Geisinger-Community Medical Center
Acute Care Hospitals · Scranton, PAGeisinger Wyoming Valley Medical Center
Acute Care Hospitals · Wilkes Barre, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 18510 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.
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 Guzek's NPI number?
The NPI number for John Guzek is 1861460545. It was assigned to this individual provider in the NPPES registry on March 9, 2006.
Where is John Guzek located?
John Guzek practices at 700 Quincy Ave, Scranton, PA 18510. The listed phone number is (866) 519-0457.
What is John Guzek's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is John Guzek enrolled in Medicare?
Yes. John Guzek 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 Guzek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Guzek reassigns Medicare benefits to 8 organizations: Scranton Quincy Clinic Company LLC (Scranton, PA), Advanced Inpatient Medicine PC (Scranton, PA), Geisinger Clinic (Dunmore, PA), Advanced Inpatient Medicine Associates PC (Wilkes Barre, PA), Advanced Inpatient Medicine Lehigh PC (Hanover, MD) and 3 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 Guzek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Guzek accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list John Guzek 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 Guzek affiliated with any hospitals?
According to CMS data, John Guzek is affiliated with Geisinger-Community Medical Center and Geisinger Wyoming Valley Medical Center.
When was this NPI record last updated?
The NPPES record for John Guzek was last updated on January 8, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. John Robert Guzek, MD · NPI 1861460545
Internal Medicine physician in Scranton, Pennsylvania. Individual provider, active in the CMS NPPES registry since March 9, 2006.
## Identity
- **NPI:** 1861460545 (Entity type: Individual)
- **Enumerated:** March 9, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD022387E (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 700 QUINCY AVE, Scranton, PA 18510-1798
- **Phone:** (866) 519-0457 · **Fax:** (570) 770-5263
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Scranton Quincy Clinic Company LLC (NPI 1619254026, Scranton, PA); Advanced Inpatient Medicine PC (NPI 1871725366, Scranton, PA); Geisinger Clinic (NPI 1821405408, Dunmore, PA); Advanced Inpatient Medicine Associates PC (NPI 1396168589, Wilkes Barre, PA); Advanced Inpatient Medicine Lehigh PC (NPI 1437537875, Hanover, MD); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Pittsburgh School Of Medicine, class of 1978
## Record status
- **NPPES last updated:** January 8, 2014
- **Other identifiers:** Medicare UPIN B33470 (PA); Medicare PIN 230894YGDB (PA); Medicaid 1013404940005 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1861460545) · Data from the CMS NPPES public registry.