Dr. Alyssa Rieber, M.D.
What this data tells you about Dr. Rieber
Dr. Alyssa Rieber is a hematology & oncology specialist in Fredericksburg, TX, with 19 years of NPI registration. Based on federal Medicare data, Dr. Rieber performed 149,797 Medicare services across 5,307 unique beneficiaries.
Between the years covered by Open Payments, Dr. Rieber received a total of $1,205 from 13 pharmaceutical and/or device companies across 48 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Rieber is Very High — reflecting how much public federal data is available about this provider. This is not a quality rating. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Darbepoetin injection (Aranesp) for anemia | 48,830 | $2 | $20 |
| Iron infusion (Feraheme) | 29,070 | $0 | $5 |
| Pembrolizumab injection (Keytruda) | 20,900 | $43 | $137 |
| Anti-nausea injection (fosaprepitant) | 15,450 | $0 | $5 |
| Iron sucrose injection (Venofer) | 11,200 | $0 | $2 |
| Immune globulin infusion (Octagam) | 4,480 | $33 | $235 |
| Dexamethasone injection (steroid) | 3,010 | $0 | $1 |
| Injection, granisetron hydrochloride, 100 mcg | 1,730 | $0 | $24 |
| Complete blood count (CBC) with differential | 1,413 | $8 | $36 |
| Blood draw (venipuncture) | 1,407 | $8 | $20 |
| Comprehensive metabolic blood panel | 1,252 | $10 | $64 |
| Anti-nausea injection (Aloxi/palonosetron) | 1,070 | $1 | $114 |
| Immunoglobulin level test | 763 | $9 | $56 |
| Flow cytometry, additional marker | 735 | $18 | $180 |
| Office visit, established patient (30-39 min) | 602 | $88 | $368 |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | 561 | $22 | $157 |
| Administration of chemotherapy into vein, 1 hour or less | 501 | $98 | $707 |
| Lactate dehydrogenase (enzyme) level | 387 | $6 | $31 |
| Office visit, established patient (20-29 min) | 359 | $62 | $250 |
| Measurement of immunoglobulin light chains | 346 | $17 | $60 |
| Ferritin level test (iron stores) | 318 | $13 | $60 |
| Iron level test | 317 | $6 | $27 |
| Iron binding capacity test | 317 | $9 | $35 |
| Office visit, established patient, complex (40-54 min) | 312 | $130 | $496 |
| Injection, zoledronic acid, 1 mg | 312 | $6 | $431 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 280 | $46 | $313 |
| Drug injection, under skin or into muscle | 264 | $10 | $96 |
| Injection, diphenhydramine hcl, up to 50 mg | 187 | $1 | $7 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | 185 | $55 | $211 |
| Beta-2 microglobulin (protein) level | 173 | $16 | $96 |
| Administration of additional new drug or substance into vein, 1 hour or less | 148 | $48 | $344 |
| Administration of chemotherapy into vein, each additional hour | 136 | $21 | $161 |
| Leuprolide acetate (for depot suspension), 7.5 mg | 135 | $134 | $3,675 |
| Reticulated (young) platelet measurement | 127 | $35 | $143 |
| Carcinoembryonic antigen (cea) protein level | 126 | $19 | $99 |
| Uric acid level test | 123 | $4 | $25 |
| Injection of additional new drug or substance into vein | 123 | $11 | $108 |
| Infusion, normal saline solution , 1000 cc | 121 | $2 | $19 |
| Telephone medical discussion with physician, 5-10 minutes | 105 | $39 | $143 |
| Infusion into a vein for therapy, prevention, or diagnosis, each additional hour | 101 | $15 | $100 |
| Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries | 99 | $91 | $657 |
| Vitamin B-12 level test | 93 | $15 | $76 |
| Nuclear medicine study from skull base to mid-thigh with ct scan | 90 | $1,111 | $4,802 |
| Unclassified drugs | 90 | $1 | $9 |
| Folic acid level test | 88 | $14 | $73 |
| PSA test (prostate cancer screening) | 88 | $18 | $94 |
| Microscopic examination for white blood cells with manual cell count | 84 | $4 | $22 |
| Complete blood count (CBC), automated | 84 | $6 | $34 |
| Magnesium level test | 81 | $7 | $29 |
| Infusion into a vein for hydration, each additional hour | 80 | $10 | $75 |
| Drawing of blood for a medical problem | 72 | $65 | $264 |
| New patient office visit, complex (60-74 min) | 71 | $162 | $709 |
| Red blood count automated, with additional calculations | 69 | $5 | $26 |
| Telephone medical discussion with physician, 11-20 minutes | 67 | $61 | $231 |
| Phosphate level test | 62 | $5 | $24 |
| Enhancing oncology model (eom) monthly enhanced oncology services (meos) payment for eom enhanced services | 60 | $69 | $70 |
| Infusion into a vein for hydration, 31-60 minutes | 54 | $24 | $256 |
| Thyroid stimulating hormone (TSH) test | 51 | $16 | $80 |
| Irrigation of implanted venous access drug delivery device | 49 | $17 | $114 |
| Immunologic analysis for detection of tumor antigen, quantitative; ca 125 | 41 | $20 | $128 |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | 40 | $23 | $145 |
| New patient office visit (45-59 min) | 36 | $102 | $565 |
| Immunologic analysis for detection of tumor antigen, quantitative; ca 15-3 | 32 | $20 | $128 |
| Flow cytometry technique for dna or cell analysis, first marker | 32 | $55 | $298 |
| Alpha-fetoprotein (afp) level, serum | 30 | $16 | $102 |
| Injection, alteplase recombinant, 1 mg | 30 | $69 | $211 |
| Protein measurement, serum | 28 | $11 | $99 |
| Immunologic analysis technique on serum (immunofixation) | 27 | $22 | $160 |
| Testosterone (hormone) level, total | 24 | $25 | $143 |
| Haptoglobin (serum protein) level | 20 | $11 | $66 |
| Declotting of central venous tube | 14 | $25 | $121 |
| C-reactive protein test (inflammation marker) | 12 | $5 | $33 |
| New patient office visit (30-44 min) | 12 | $68 | $372 |
| Nuclear medicine study whole body with ct scan | 11 | $1,105 | $4,929 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
Associated products mentioned in payments ›
Most payments (59%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
0.0 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This measures how much public data is available about a provider — not how good they are. How we calculate this →
Summary
Dr. Rieber is a mixed practice specialist, with above-average Medicare volume (top 3% in TX), with low-engagement industry engagement, with 19 years of NPI registration.
This summary is auto-generated from federal data. It describes data availability and patterns — not clinical quality. Read our methodology →
Frequently Asked Questions
Is Dr. Rieber experienced with darbepoetin injection (aranesp) for anemia?
Does Dr. Rieber receive payments from pharmaceutical companies?
How do Dr. Rieber's costs compare to other hematology & oncology specialists in Fredericksburg?
What does Data Coverage mean?
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. The Transparency Score measures data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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