MR. SETH DAVID OSENKARSKI MSN, APRN, FNP-BC
NPI 1649819608
Nurse Practitioner - Family in Charleston, SC
About Mr. Seth David Osenkarski Msn, Aprn, Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. SETH DAVID OSENKARSKI MSN, APRN, FNP-BC (NPI 1649819608) is an individual family provider in Charleston, South Carolina, licensed in South Carolina (23106) and active in the NPI registry since December 2019. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Other Identifiers 1
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
Mr. Seth David Osenkarski Msn, Aprn, Fnp-bc 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
4Medicare enrollment records show Seth Osenkarski reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hanahan, SC 29410
- Reassigned Medicare billing, South Carolina enrollment
- 290 clinicians in this Medicare group
Myrtle Beach, SC 29577
- Reassigned Medicare billing, South Carolina enrollment
- 19 clinicians in this Medicare group
Greenville, SC 29611
- Reassigned Medicare billing, South Carolina enrollment
- 40 clinicians in this Medicare group
Canonsburg, PA 15317
- Reassigned Medicare billing, Pennsylvania enrollment
- 40 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 9
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 29405 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 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NORTH CHARLESTON, SC 29405
NORTH CHARLESTON, SC 29405
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 Seth Osenkarski's NPI number?
The NPI number for Seth Osenkarski is 1649819608. It was assigned to this individual provider in the NPPES registry on December 22, 2019.
Where is Seth Osenkarski located?
Seth Osenkarski practices at 4400 Dorchester Rd, Charleston, SC 29405. The listed phone number is (843) 278-8291.
What is Seth Osenkarski's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Seth Osenkarski enrolled in Medicare?
Yes. Seth Osenkarski 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 Seth Osenkarski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Seth Osenkarski reassigns Medicare benefits to 4 organizations: Palmetto Primary Care Physicians, LLC (Hanahan, SC), Mid-South Home Care Services, LLC (Myrtle Beach, SC), Oak Street Health Physicians Group Of South Carolina, LLC (Greenville, SC) and Ih Physician Services, PC (Canonsburg, PA). 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 Seth Osenkarski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Seth Osenkarski accept?
Health plans from BlueCross BlueShield of South Carolina, First Choice Next, Molina Healthcare and UnitedHealthcare list Seth Osenkarski 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.
When was this NPI record last updated?
The NPPES record for Seth Osenkarski was last updated on July 31, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Mr. Seth David Osenkarski, MSN, APRN, FNP-BC · NPI 1649819608
Family physician in Charleston, South Carolina. Individual provider, active in the CMS NPPES registry since December 22, 2019.
## Identity
- **NPI:** 1649819608 (Entity type: Individual)
- **Enumerated:** December 22, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 23106 (South Carolina)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4400 DORCHESTER RD, Charleston, SC 29405-6849
- **Phone:** (843) 278-8291 · **Fax:** (843) 279-3199
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Palmetto Primary Care Physicians, LLC (NPI 1639118524, Hanahan, SC); Mid-South Home Care Services, LLC (NPI 1033990544, Myrtle Beach, SC); Oak Street Health Physicians Group Of South Carolina, LLC (NPI 1023614914, Greenville, SC); Ih Physician Services, PC (NPI 1285435875, Canonsburg, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** July 31, 2026
- **Other identifiers:** Medicaid NP6773 (SC)
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Source: [NPI Profile](https://npiprofile.com/npi/1649819608) · Data from the CMS NPPES public registry.