MICHAEL KOSOFSKY MD
NPI 1639794134
Emergency Medicine in Philadelphia, PA
About Michael Kosofsky Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL KOSOFSKY MD (NPI 1639794134) is an individual emergency medicine provider in Philadelphia, Pennsylvania, licensed in California (A186156) and active in the NPI registry since June 2020. He is enrolled in Medicare PECOS and is a graduate of Temple University School Of Medicine (2020).
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
Michael Kosofsky 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
4Medicare enrollment records show Michael Kosofsky reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Blythe, CA 92225
- Reassigned Medicare billing, California enrollment
- Also billed through NPI 1073554002 (California)
- 2,323 clinicians in this Medicare group
Chula Vista, CA 91910
- Reassigned Medicare billing, California enrollment
- 44 clinicians in this Medicare group
La Jolla, CA 92037
- Reassigned Medicare billing, California enrollment
- 31 clinicians in this Medicare group
La Jolla, CA 92037
- Reassigned Medicare billing, California enrollment
- 33 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 7
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 19140 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHILADELPHIA, PA 19140
PHILADELPHIA, PA 19140
PHILADELPHIA, PA 19140
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 Michael Kosofsky's NPI number?
The NPI number for Michael Kosofsky is 1639794134. It was assigned to this individual provider in the NPPES registry on June 10, 2020.
Where is Michael Kosofsky located?
Michael Kosofsky practices at 3401 N Broad St, Philadelphia, PA 19140. The listed phone number is (603) 493-4417.
What is Michael Kosofsky's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Michael Kosofsky enrolled in Medicare?
Yes. Michael Kosofsky 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 Michael Kosofsky's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Kosofsky reassigns Medicare benefits to 4 organizations: Cep America-California (Blythe, CA), Chula Vista Emergency Room Physicians, A Medical Corporation (Chula Vista, CA), La Jolla Emergency Specialists (La Jolla, CA) and La Jolla Observation Medicine (La Jolla, CA). 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 Michael Kosofsky'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 Michael Kosofsky was last updated on June 12, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Michael Kosofsky, MD · NPI 1639794134
Emergency Medicine physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since June 10, 2020.
## Identity
- **NPI:** 1639794134 (Entity type: Individual)
- **Enumerated:** June 10, 2020
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A186156 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3401 N BROAD ST, Philadelphia, PA 19140-5103
- **Phone:** (603) 493-4417
## 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): Cep America-California (NPI 1710826581, Blythe, CA); Chula Vista Emergency Room Physicians, A Medical Corporation (NPI 1780021782, Chula Vista, CA); La Jolla Emergency Specialists (NPI 1710315353, La Jolla, CA); La Jolla Observation Medicine (NPI 1780122986, La Jolla, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Temple University School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** June 12, 2023
---
Source: [NPI Profile](https://npiprofile.com/npi/1639794134) · Data from the CMS NPPES public registry.