Quick answers
- Does Fredric M. Pfeifer Ii accept Medicare assignment?
- Yes. Medicare's clinician data says Fredric M. Pfeifer Ii accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Fredric M. Pfeifer Ii see?
- In 2024, CMS data shows 5,324 Original Medicare patients and 93,585 services for Fredric M. Pfeifer Ii. This counts Original Medicare only and measures volume, not quality.
- What is Fredric M. Pfeifer Ii's NPI number?
- 1972507598. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Fredric M. Pfeifer Ii, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 5,324 |
|---|---|
| Services billed to Medicare | 93,585 |
| Different services or procedures | 174 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Injection, gadobutrol, 0.1 ml (A9585)53,377 services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)30,715 services
- Screening 3d breast mammography (77063)1,838 services
- Screening mammography (77067)1,835 services
- Dxa bone density measurement of hip, pelvis, spine (77080)458 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure64%
- Arthritis48%
- Anxiety24%
- Diabetes23%
- Ischemic heart disease23%
Hospitals where Fredric M. Pfeifer Ii works
Medicare's Facility Affiliation Data lists Fredric M. Pfeifer Ii at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Ascension Seton Cedar ParkCedar Park, TX · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 670043
- CHRISTUS Santa Rosa Hospital-San MarcosSan Marcos, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450272
- St David's Medical CenterAustin, TX · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 450431
Practice locations
Addresses where Fredric M. Pfeifer Ii is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 12; the Medicare profile lists all.
- 1110 N Sarah Dewitt Dr, Gonzales Health SystemGonzales, TX 78629 (830) 672‑7581
- 1201 W 38th StAustin, TX 78705
- 12800 W Parmer Ln, Suite 200Cedar Park, TX 78613 (855) 504‑4544
- 12801 Hacienda RdgAustin, TX 78738 (713) 461‑3573
- 1301 Medical PkwyCedar Park, TX 78613 (512) 379‑3600
Group practices
Medicare enrollment lists Fredric M. Pfeifer Ii as a member of these groups (CMS data updated October 2, 2026).
- Singleton Associates PA838 clinicians in the group
- Austin Radiological Association127 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Gonzales
Clinicians with the same Medicare primary specialty in Gonzales, TX — not a recommendation.
Other clinicians in Singleton Associates PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Kansas School Of Med (kc/wich/sal) |
| Graduation year | 1993 (33 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1972507598 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians