LAUREN CLARK-OSTROSKI
NPI 1366223760
Nurse Practitioner - Family in Philadelphia, PA
About Lauren Clark-ostroski NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAUREN CLARK-OSTROSKI (NPI 1366223760) is an individual family provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (SP028442) and active in the NPI registry since October 2023. She is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses
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
Lauren Clark-ostroski 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
2Medicare enrollment records show Lauren Clark-ostroski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19104
- Reassigned Medicare billing, Pennsylvania enrollment
- 199 clinicians in this Medicare group
Philadelphia, PA 19139
- Reassigned Medicare billing, Pennsylvania enrollment
- 27 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 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Hospital Of Univ Of Pennsylvania
Acute Care Hospitals · Philadelphia, PAPenn Presbyterian Medical Center
Acute Care Hospitals · Philadelphia, PAPennsylvania Hospital
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19104 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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHILADELPHIA, PA 19104
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 Lauren Clark-ostroski's NPI number?
The NPI number for Lauren Clark-ostroski is 1366223760. It was assigned to this individual provider in the NPPES registry on October 11, 2023.
Where is Lauren Clark-ostroski located?
Lauren Clark-ostroski practices at 3701 Market St Fl 7, Philadelphia, PA 19104. The listed phone number is (215) 349-5200.
What is Lauren Clark-ostroski's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Lauren Clark-ostroski enrolled in Medicare?
Yes. Lauren Clark-ostroski 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 Lauren Clark-ostroski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lauren Clark-ostroski reassigns Medicare benefits to 2 organizations: Trustees Of The University Of Pennsylvania (Philadelphia, PA) and Sayre Health Center (Philadelphia, 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 Lauren Clark-ostroski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Lauren Clark-ostroski affiliated with any hospitals?
According to CMS data, Lauren Clark-ostroski is affiliated with Hospital Of Univ Of Pennsylvania, Penn Presbyterian Medical Center and Pennsylvania Hospital.
When was this NPI record last updated?
The NPPES record for Lauren Clark-ostroski was last updated on August 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 55 days 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.
# Lauren Clark-Ostroski · NPI 1366223760
Family physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since October 11, 2023.
## Identity
- **NPI:** 1366223760 (Entity type: Individual)
- **Enumerated:** October 11, 2023
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** SP028442 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 3701 MARKET ST FL 7, Philadelphia, PA 19104-5508
- **Phone:** (215) 349-5200
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Trustees Of The University Of Pennsylvania (NPI 1124882949, Philadelphia, PA); Sayre Health Center (NPI 1831209113, Philadelphia, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** August 27, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1366223760) · Data from the CMS NPPES public registry.