MARISSA MAAS
NPI 1023644671
Urology in Philadelphia, PA
About Marissa Maas NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARISSA MAAS (NPI 1023644671) is an individual urology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD494817) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, is affiliated with Temple Health - Chestnut Hill Hospital, and maintains a secondary practice location in Los Angeles.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Marissa Maas 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 Reassignment
Medicare enrollment records show Marissa Maas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Philadelphia, PA 19111
- Reassigned Medicare billing, Pennsylvania enrollment
- 1,991 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Temple Health - Chestnut Hill Hospital
Acute Care Hospitals · Philadelphia, PATemple University Hospital
Acute Care Hospitals · Philadelphia, PAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19111 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 19111
PHILADELPHIA, PA 19111
PHILADELPHIA, PA 19111
PHILADELPHIA, PA 19111
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 Marissa Maas's NPI number?
The NPI number for Marissa Maas is 1023644671. It was assigned to this individual provider in the NPPES registry on March 16, 2020.
Where is Marissa Maas located?
Marissa Maas practices at 333 Cottman Ave, Philadelphia, PA 19111. The listed phone number is (215) 728-2570.
What is Marissa Maas's specialty?
The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.
Is Marissa Maas enrolled in Medicare?
Yes. Marissa Maas 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 organization bills Medicare for Marissa Maas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Maas reassigns Medicare benefits to Temple Faculty Practice Plan, Inc (Philadelphia, PA). The 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 Marissa Maas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Marissa Maas affiliated with any hospitals?
According to CMS data, Marissa Maas is affiliated with Temple Health - Chestnut Hill Hospital and Temple University Hospital.
When was this NPI record last updated?
The NPPES record for Marissa Maas was last updated on July 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.
# Marissa Maas · NPI 1023644671
Urology physician in Philadelphia, Pennsylvania. Individual provider, active in the CMS NPPES registry since March 16, 2020.
## Identity
- **NPI:** 1023644671 (Entity type: Individual)
- **Enumerated:** March 16, 2020
- **Primary specialty:** Urology · taxonomy 208800000X
- **State license:** MD494817 (Pennsylvania)
- **Sole proprietor:** No
## Practice location
- **Address:** 333 COTTMAN AVE, Philadelphia, PA 19111-2434
- **Phone:** (215) 728-2570
## 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:** Temple Faculty Practice Plan, Inc (NPI 1093298887, Philadelphia, PA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** July 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1023644671) · Data from the CMS NPPES public registry.