KELSEY HASSIG DO
NPI 1750888384
Internal Medicine - Infectious Disease in Philadelphia, PA
About Kelsey Hassig Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KELSEY HASSIG DO (NPI 1750888384) is an individual infectious disease provider in Philadelphia, Pennsylvania, licensed in New Jersey (25MB12274600) and active in the NPI registry since April 2018. She is enrolled in Medicare PECOS, is affiliated with Cooper University Hospital, and is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
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
Kelsey Hassig Do 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 Kelsey Hassig reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Philadelphia, PA 19125
- Reassigned Medicare billing, Pennsylvania enrollment
- 232 clinicians in this Medicare group
Camden, NJ 08103
- Reassigned Medicare billing, New Jersey enrollment
- Medicare enrollment name: Cmc Department Of Medicine Group PA
- 399 clinicians in this Medicare group
New York, NY 10016
- Reassigned Medicare billing, Texas enrollment
- 62 clinicians in this Medicare group
Sleepy Hollow, NY 10591
- Reassigned Medicare billing, Pennsylvania enrollment
- 6 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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Cooper University Hospital
Acute Care Hospitals · Camden, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19125 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 17
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PHILADELPHIA, PA 19125
PHILADELPHIA, PA 19125
PHILADELPHIA, PA 19125
PHILADELPHIA, PA 19125
PHILADELPHIA, PA 19125
PHILADELPHIA, PA 19125
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 Kelsey Hassig's NPI number?
The NPI number for Kelsey Hassig is 1750888384. It was assigned to this individual provider in the NPPES registry on April 10, 2018.
Where is Kelsey Hassig located?
Kelsey Hassig practices at 1080 N Delaware Ave Ste 800, Philadelphia, PA 19125. The listed phone number is (267) 463-5800.
What is Kelsey Hassig's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Kelsey Hassig enrolled in Medicare?
Yes. Kelsey Hassig 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 Kelsey Hassig's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kelsey Hassig reassigns Medicare benefits to 4 organizations: Greater Philadelphia Health Action, Inc. (Philadelphia, PA), Cmc Department Of Medicine (Camden, NJ), Ccmma Tx PLLC (New York, NY) and Critical Care Medical Management Associates PLLC (Sleepy Hollow, NY). 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 Kelsey Hassig's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kelsey Hassig accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Buckeye Health Plan list Kelsey Hassig 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 Kelsey Hassig affiliated with any hospitals?
According to CMS data, Kelsey Hassig is affiliated with Cooper University Hospital.
When was this NPI record last updated?
The NPPES record for Kelsey Hassig was last updated on September 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 30 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.
# Kelsey Hassig, DO · NPI 1750888384
Infectious Disease physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since April 10, 2018.
## Identity
- **NPI:** 1750888384 (Entity type: Individual)
- **Enumerated:** April 10, 2018
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** 25MB12274600 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 1080 N DELAWARE AVE STE 800, Philadelphia, PA 19125-4338
- **Phone:** (267) 463-5800
## 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): Greater Philadelphia Health Action, Inc. (NPI 1427533280, Philadelphia, PA); Cmc Department Of Medicine (NPI 1104945005, Camden, NJ); Ccmma Tx PLLC (NPI 1841829819, New York, NY); Critical Care Medical Management Associates PLLC (NPI 1194090878, Sleepy Hollow, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** September 21, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1750888384) · Data from the CMS NPPES public registry.