DR. JOHN NAH KWAK MD
NPI 1871694653
Hospitalist in Columbus, OH
About Dr. John Nah Kwak Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN NAH KWAK MD (NPI 1871694653) is an individual hospitalist provider in Columbus, Ohio, licensed in Ohio (35069383) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. John Nah Kwak Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show John Kwak reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Columbus, OH 43214
- Reassigned Medicare billing, Ohio enrollment
- 231 clinicians in this Medicare group
Columbus, OH 43201
- Reassigned Medicare billing, Ohio enrollment
- 61 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 43214 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.
COLUMBUS, OH 43214
COLUMBUS, OH 43214
COLUMBUS, OH 43214
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 Kwak's NPI number?
The NPI number for John Kwak is 1871694653. It was assigned to this individual provider in the NPPES registry on September 26, 2006.
Where is John Kwak located?
John Kwak practices at 3525 Olentangy River Rd Suite 4330, Columbus, OH 43214. The listed phone number is (614) 255-6900.
What is John Kwak's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is John Kwak enrolled in Medicare?
Yes. John Kwak is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for John Kwak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Kwak reassigns Medicare benefits to 2 organizations: Central Ohio Hospitalists, Inc (Columbus, OH) and Medone Long-Term Acute Care LLC (Columbus, OH). 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 Kwak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for John Kwak was last updated on December 14, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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 Nah Kwak, MD · NPI 1871694653
Hospitalist physician in Columbus, Ohio. Individual provider, active in the CMS NPPES registry since September 26, 2006.
## Identity
- **NPI:** 1871694653 (Entity type: Individual)
- **Enumerated:** September 26, 2006
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 35069383 (Ohio)
- **Sole proprietor:** No
## Practice location
- **Address:** 3525 OLENTANGY RIVER RD, SUITE 4330, Columbus, OH 43214-3937
- **Phone:** (614) 255-6900
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Central Ohio Hospitalists, Inc (NPI 1659455145, Columbus, OH); Medone Long-Term Acute Care LLC (NPI 1902628548, Columbus, OH) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 14, 2007
- **Other identifiers:** Medicare UPIN G54124; Medicaid 2029325 (OH); Medicare PIN 4052644
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Source: [NPI Profile](https://npiprofile.com/npi/1871694653) · Data from the CMS NPPES public registry.