MARK B FALK MD
NPI 1689606402
Emergency Medicine in Philadelphia, PA
About Mark B Falk Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARK B FALK MD (NPI 1689606402) is an individual emergency medicine provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD420316) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Mark B Falk Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Mark Falk 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
- 3,488 clinicians in this Medicare group
Pottsville, PA 17901
- Reassigned Medicare billing, Pennsylvania enrollment
- 4,429 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.
Physician 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHILADELPHIA, PA 19104
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 Mark Falk's NPI number?
The NPI number for Mark Falk is 1689606402. It was assigned to this individual provider in the NPPES registry on July 6, 2006.
Where is Mark Falk located?
Mark Falk practices at 3400 Spruce St Ground Silverstein Building, Philadelphia, PA 19104. The listed phone number is (215) 662-6963.
What is Mark Falk's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Mark Falk enrolled in Medicare?
Yes. Mark Falk is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mark Falk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Falk reassigns Medicare benefits to 2 organizations: University Of Penn-Medical Group (Philadelphia, PA) and Geisinger Clinic (Pottsville, 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 Mark Falk'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 Mark Falk was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Mark B Falk, MD · NPI 1689606402
Emergency Medicine physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since July 6, 2006.
## Identity
- **NPI:** 1689606402 (Entity type: Individual)
- **Enumerated:** July 6, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** MD420316 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 3400 SPRUCE ST, GROUND SILVERSTEIN BUILDING, Philadelphia, PA 19104-4206
- **Phone:** (215) 662-6963
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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 1073902169, Philadelphia, PA); Geisinger Clinic (NPI 1043261183, Pottsville, PA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified 076908 (PA); Medicare UPIN I01877 (PA)
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Source: [NPI Profile](https://npiprofile.com/npi/1689606402) · Data from the CMS NPPES public registry.