DR. KI WON SEO M.D.
NPI 1003236423
Hospitalist in Plainview, NY
About Dr. Ki Won Seo M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KI WON SEO M.D. (NPI 1003236423) is an individual hospitalist provider in Plainview, New York, licensed in New York (290456) and active in the NPI registry since April 2014. He is enrolled in Medicare PECOS, is affiliated with East Jefferson General Hospital, and is a graduate of Other (2014).
NPPES Registry Identity
Specialties & Licenses 2
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. Ki Won Seo 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 Reassignments
8Medicare enrollment records show Ki Won Seo reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
White Plains, NY 10601
- Reassigned Medicare billing, New York enrollment
- 479 clinicians in this Medicare group
Ashtabula, OH 44004
- Reassigned Medicare billing, Ohio enrollment
- 272 clinicians in this Medicare group
Scottsdale, AZ 85254
- Reassigned Medicare billing, Pennsylvania enrollment
- 383 clinicians in this Medicare group
Scottsdale, AZ 85254
- Reassigned Medicare billing, Louisiana enrollment
- 104 clinicians in this Medicare group
Scottsdale, AZ 85254
- Reassigned Medicare billing, New York enrollment
- 354 clinicians in this Medicare group
Phoenix, AZ 85016
- Reassigned Medicare billing, Oregon enrollment
- 70 clinicians in this Medicare group
Gilroy, CA 95020
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1043354020 (California)
- 2,460 clinicians in this Medicare group
Mountain View, CA 94040
- Reassigned Medicare billing, California enrollment
- 217 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 4
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.
East Jefferson General Hospital
Acute Care Hospitals · Metairie, LASaint Vincent Hospital
Acute Care Hospitals · Erie, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11803 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
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 Ki Won Seo's NPI number?
The NPI number for Ki Won Seo is 1003236423. It was assigned to this individual provider in the NPPES registry on April 24, 2014.
Where is Ki Won Seo located?
Ki Won Seo practices at 54 Central Park Rd, Plainview, NY 11803. The listed phone number is (718) 670-2000.
What is Ki Won Seo's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Ki Won Seo enrolled in Medicare?
Yes. Ki Won Seo 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 Ki Won Seo's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ki Won Seo reassigns Medicare benefits to 8 organizations: East Post Road Medical Services PC (White Plains, NY), Apogee Medical Group Ohio Inc (Ashtabula, OH), Apogee Medical Group Of Pennsylvania PC (Scottsdale, AZ), Apogee Medical Group, Louisiana, Inc. (Scottsdale, AZ), Apogee Medical Group, New York, PC (Scottsdale, AZ) 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 Ki Won Seo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ki Won Seo accept?
Health plans from CareSource and HMO Louisiana list Ki Won Seo 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 Ki Won Seo affiliated with any hospitals?
According to CMS data, Ki Won Seo is affiliated with East Jefferson General Hospital and Saint Vincent Hospital.
When was this NPI record last updated?
The NPPES record for Ki Won Seo was last updated on January 4, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Ki Won Seo, M.D. · NPI 1003236423
Hospitalist physician in Plainview, New York. Individual provider, active in the CMS NPPES registry since April 24, 2014.
## Identity
- **NPI:** 1003236423 (Entity type: Individual)
- **Enumerated:** April 24, 2014
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 290456 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 54 CENTRAL PARK RD, Plainview, NY 11803-2012
- **Phone:** (718) 670-2000
## 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): East Post Road Medical Services PC (NPI 1841767274, White Plains, NY); Apogee Medical Group Ohio Inc (NPI 1477500999, Ashtabula, OH); Apogee Medical Group Of Pennsylvania PC (NPI 1568633535, Scottsdale, AZ); Apogee Medical Group, Louisiana, Inc. (NPI 1932347903, Scottsdale, AZ); Apogee Medical Group, New York, PC (NPI 1841520236, Scottsdale, AZ); and 3 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** January 4, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1003236423) · Data from the CMS NPPES public registry.