DR. TIRSA M FERRER MARRERO M.D.
NPI 1093909210
Internal Medicine - Pulmonary Disease in Milwaukee, WI
About Dr. Tirsa M Ferrer Marrero M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TIRSA M FERRER MARRERO M.D. (NPI 1093909210) is an individual pulmonary disease provider in Milwaukee, Wisconsin, licensed in Wisconsin (66180) and active in the NPI registry since August 2007. She is enrolled in Medicare PECOS, is affiliated with University Of Illinois Hospital And Clinics, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Other Identifiers 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
Dr. Tirsa M Ferrer Marrero M.d. 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 Tirsa Ferrer Marrero reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 clinicians in this Medicare group
South Beloit, IL 61080
- Reassigned Medicare billing, Illinois enrollment
- 2,127 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
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.
University Of Illinois Hospital And Clinics
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53226 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.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
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 Tirsa Ferrer Marrero's NPI number?
The NPI number for Tirsa Ferrer Marrero is 1093909210. It was assigned to this individual provider in the NPPES registry on August 30, 2007.
Where is Tirsa Ferrer Marrero located?
Tirsa Ferrer Marrero practices at 9200 W Wisconsin Ave Division Of Pulmonary Disease, Milwaukee, WI 53226. The listed phone number is (414) 955-7040.
What is Tirsa Ferrer Marrero's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Tirsa Ferrer Marrero enrolled in Medicare?
Yes. Tirsa Ferrer Marrero 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 Tirsa Ferrer Marrero's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tirsa Ferrer Marrero reassigns Medicare benefits to 2 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI) and The Board Of Trustees Of The University Of Illinois (South Beloit, IL). 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 Tirsa Ferrer Marrero's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Tirsa Ferrer Marrero affiliated with any hospitals?
According to CMS data, Tirsa Ferrer Marrero is affiliated with University Of Illinois Hospital And Clinics.
When was this NPI record last updated?
The NPPES record for Tirsa Ferrer Marrero was last updated on February 21, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 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.
# Dr. Tirsa M Ferrer Marrero, M.D. · NPI 1093909210
Pulmonary Disease physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since August 30, 2007.
## Identity
- **NPI:** 1093909210 (Entity type: Individual)
- **Enumerated:** August 30, 2007
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 66180 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9200 W WISCONSIN AVE, DIVISION OF PULMONARY DISEASE, Milwaukee, WI 53226-3522
- **Phone:** (414) 955-7040 · **Fax:** (414) 955-6211
## 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): The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI); The Board Of Trustees Of The University Of Illinois (NPI 1871905190, South Beloit, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** February 21, 2025
- **Other identifiers:** Medicaid 1093909210 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1093909210) · Data from the CMS NPPES public registry.