DR. TANIA RAMIREZ FONSECA M.D.
NPI 1346645900
Hospitalist in Lakeway, TX
About Dr. Tania Ramirez Fonseca M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TANIA RAMIREZ FONSECA M.D. (NPI 1346645900) is an individual hospitalist provider in Lakeway, Texas, licensed in Texas (R1623) and active in the NPI registry since October 2014. She is enrolled in Medicare PECOS, is affiliated with Baylor Scott & White Medical Center - Round Rock, and maintains a secondary practice location in Austin.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Dr. Tania Ramirez Fonseca 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
6Medicare enrollment records show Tania Ramirez Fonseca reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pflugerville, TX 78660
- Reassigned Medicare billing, Texas enrollment
- 2,795 clinicians in this Medicare group
San Antonio, TX 78205
- Reassigned Medicare billing, Texas enrollment
- 478 clinicians in this Medicare group
Mansfield, TX 76063
- Reassigned Medicare billing, Texas enrollment
- 994 clinicians in this Medicare group
Humble, TX 77338
- Reassigned Medicare billing, Texas enrollment
- 2,009 clinicians in this Medicare group
Laredo, TX 78041
- Reassigned Medicare billing, Texas enrollment
- 94 clinicians in this Medicare group
Cayey, PR 00737
- Reassigned Medicare billing, Puerto Rico enrollment
- 162 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baylor Scott & White Medical Center - Round Rock
Acute Care Hospitals · Round Rock, TXBaylor Scott & White Medical Center - Marble Falls
Acute Care Hospitals · Marble Falls, TXBaylor Scott & White Medical Center - Buda
Acute Care Hospitals · Buda, TXBaylor Scott & White Medical Center- Austin
Acute Care Hospitals · Austin, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78738 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.
Reported Quality Measures
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.
LAKEWAY, TX 78738
LAKEWAY, TX 78738
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 Tania Ramirez Fonseca's NPI number?
The NPI number for Tania Ramirez Fonseca is 1346645900. It was assigned to this individual provider in the NPPES registry on October 24, 2014.
Where is Tania Ramirez Fonseca located?
Tania Ramirez Fonseca practices at 100 Medical Pkwy, Lakeway, TX 78738. The listed phone number is (512) 571-5000.
What is Tania Ramirez Fonseca's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Tania Ramirez Fonseca enrolled in Medicare?
Yes. Tania Ramirez Fonseca 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 Tania Ramirez Fonseca's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tania Ramirez Fonseca reassigns Medicare benefits to 6 organizations: Scott & White Clinic (Pflugerville, TX), Sound Inpatient Physicians Of Texas I, Inc (San Antonio, TX), Lonestar Hospital Medicine Associates, PA (Mansfield, TX), Hospitalist Medicine Physicians Of Texas, PLLC (Humble, TX), Hcc Of Laredo LLC (Laredo, TX) and 1 more organization, listed in the Medicare section above. 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 Tania Ramirez Fonseca's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tania Ramirez Fonseca accept?
Health plans from Blue Cross and Blue Shield of Texas list Tania Ramirez Fonseca 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 Tania Ramirez Fonseca affiliated with any hospitals?
According to CMS data, Tania Ramirez Fonseca is affiliated with Baylor Scott & White Medical Center - Round Rock, Baylor Scott & White Medical Center - Marble Falls, Baylor Scott & White Medical Center - Buda and Baylor Scott & White Medical Center- Austin.
When was this NPI record last updated?
The NPPES record for Tania Ramirez Fonseca was last updated on January 5, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Tania Ramirez Fonseca, M.D. · NPI 1346645900
Hospitalist physician in Lakeway, Texas. Individual provider, active in the CMS NPPES registry since October 24, 2014.
## Identity
- **NPI:** 1346645900 (Entity type: Individual)
- **Enumerated:** October 24, 2014
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** R1623 (Texas)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 100 MEDICAL PKWY, Lakeway, TX 78738
- **Phone:** (512) 571-5000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Scott & White Clinic (NPI 1679691729, Pflugerville, TX); Sound Inpatient Physicians Of Texas I, Inc (NPI 1811321797, San Antonio, TX); Lonestar Hospital Medicine Associates, PA (NPI 1518237429, Mansfield, TX); Hospitalist Medicine Physicians Of Texas, PLLC (NPI 1629307095, Humble, TX); Hcc Of Laredo LLC (NPI 1942712252, Laredo, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** January 5, 2022
---
Source: [NPI Profile](https://npiprofile.com/npi/1346645900) · Data from the CMS NPPES public registry.