CHRISTOPHER J REES MD
NPI 1669406633
Emergency Medicine in Philadelphia, PA
About Christopher J Rees Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOPHER J REES MD (NPI 1669406633) is an individual emergency medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD045023L) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and is a graduate of Rutgers New Jersey Medical School (1989).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Christopher J Rees Md 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 Christopher Rees reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19107
- Reassigned Medicare billing, Pennsylvania enrollment
- 3,488 clinicians in this Medicare group
Philadelphia, PA 19106
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Clinical Care Associates Of The University Of Pennsylvania Health.
- 983 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 2
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.
Hospital Of Univ Of Pennsylvania
Acute Care Hospitals · Philadelphia, PAPennsylvania Hospital
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19107 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
PHILADELPHIA, PA 19107
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 Christopher Rees's NPI number?
The NPI number for Christopher Rees is 1669406633. It was assigned to this individual provider in the NPPES registry on July 10, 2006.
Where is Christopher Rees located?
Christopher Rees practices at 700 Spruce Street Pine Basement West, Philadelphia, PA 19107. The listed phone number is (215) 829-3264.
What is Christopher Rees's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Christopher Rees enrolled in Medicare?
Yes. Christopher Rees 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 Christopher Rees's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Rees reassigns Medicare benefits to 2 organizations: University Of Penn-Medical Group (Philadelphia, PA) and Clinical Care Associates Of The University Of Pennsylvania Health Syst (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 Christopher Rees's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christopher Rees accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Christopher Rees 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 Christopher Rees affiliated with any hospitals?
According to CMS data, Christopher Rees is affiliated with Hospital Of Univ Of Pennsylvania and Pennsylvania Hospital.
When was this NPI record last updated?
The NPPES record for Christopher Rees was last updated on April 4, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.
# Christopher J Rees, MD · NPI 1669406633
Emergency Medicine physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 10, 2006.
## Identity
- **NPI:** 1669406633 (Entity type: Individual)
- **Enumerated:** July 10, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD045023L (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 700 SPRUCE STREET, PINE BASEMENT WEST, Philadelphia, PA 19107-6130
- **Phone:** (215) 829-3264 · **Fax:** (215) 829-8044
## 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): University Of Penn-Medical Group (NPI 1669860854, Philadelphia, PA); Clinical Care Associates Of The University Of Pennsylvania Health Syst (NPI 1942319777, Philadelphia, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Rutgers New Jersey Medical School, class of 1989
## Record status
- **NPPES last updated:** April 4, 2012
- **Other identifiers:** Medicaid 001281200 (PA); Medicare UPIN F34056 (PA); Medicare PIN 720212 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1669406633) · Data from the CMS NPPES public registry.