JOHN T GENECZKO JR. M.D.
NPI 1902875727
Internal Medicine - Gastroenterology in Durham, NC
About John T Geneczko Jr. M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN T GENECZKO JR. M.D. (NPI 1902875727) is an individual gastroenterology provider in Durham, North Carolina, licensed in Indiana (01036161A) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS, is affiliated with Duke University Hospital, and is a graduate of University Of Michigan Medical School (1978).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 8
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 T Geneczko Jr. M.d. 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 Reassignment
Medicare enrollment records show John Geneczko reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Durham, NC 27710
- Reassigned Medicare billing, North Carolina enrollment
- 3,671 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
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.
Duke University Hospital
Acute Care Hospitals · Durham, NCPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 27710 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.
DURHAM, NC 27710
DURHAM, NC 27710
DURHAM, NC 27710
DURHAM, NC 27710
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 Geneczko's NPI number?
The NPI number for John Geneczko is 1902875727. It was assigned to this individual provider in the NPPES registry on March 15, 2006.
Where is John Geneczko located?
John Geneczko practices at 200 Trent Dr 3662 Dumc, Durham, NC 27710. The listed phone number is (919) 684-1817.
What is John Geneczko's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is John Geneczko enrolled in Medicare?
Yes. John Geneczko 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 organization bills Medicare for John Geneczko's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Geneczko reassigns Medicare benefits to Duke Health Integrated Practice, Inc. (Durham, NC). The 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 Geneczko's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Geneczko accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of North Carolina, Ambetter of Tennessee and Blue Cross and Blue Shield of NC and 1 other insurer list John Geneczko 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 Geneczko affiliated with any hospitals?
According to CMS data, John Geneczko is affiliated with Duke University Hospital.
When was this NPI record last updated?
The NPPES record for John Geneczko was last updated on May 28, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# John T Geneczko Jr., M.D. · NPI 1902875727
Gastroenterology physician in Durham, North Carolina. Individual provider, active in the CMS NPPES registry since March 15, 2006.
## Identity
- **NPI:** 1902875727 (Entity type: Individual)
- **Enumerated:** March 15, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 01036161A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 TRENT DR, 3662 DUMC, Durham, NC 27710-2479
- **Phone:** (919) 684-1817 · **Fax:** (919) 681-8147
## 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:** Duke Health Integrated Practice, Inc. (NPI 1205553369, Durham, NC), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Michigan Medical School, class of 1978
## Record status
- **NPPES last updated:** May 28, 2013
- **Other identifiers:** Medicare PIN 100011228 (IN); Medicaid GE15365010 (IN); Other 9397086 (IN); and 5 more
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Source: [NPI Profile](https://npiprofile.com/npi/1902875727) · Data from the CMS NPPES public registry.