Dr. Nathan Shumway, D.O., FACP
What this data tells you about Dr. Shumway
Dr. Nathan Shumway is a medical oncology in San Antonio, TX, with 20 years in practice. Based on federal Medicare data, Dr. Shumway performed 72,895 Medicare services across 3,728 unique beneficiaries.
Between the years covered by Open Payments, Dr. Shumway received a total of $6,186 from 29 pharmaceutical and/or device companies across 52 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in medical 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. Shumway 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 |
|---|---|---|---|
| Iron infusion (Feraheme) | 22,440 | $0 | $5 |
| Iron sucrose injection (Venofer) | 20,900 | $0 | $2 |
| Anti-nausea injection (fosaprepitant) | 8,850 | $0 | $5 |
| Pembrolizumab injection (Keytruda) | 7,400 | $43 | $137 |
| Dexamethasone injection (steroid) | 2,002 | $0 | $1 |
| Complete blood count (CBC) with differential | 1,211 | $8 | $36 |
| Comprehensive metabolic blood panel | 1,146 | $10 | $64 |
| Blood draw (venipuncture) | 1,139 | $8 | $20 |
| Anti-nausea injection (Aloxi/palonosetron) | 890 | $1 | $114 |
| Flow cytometry, additional marker | 617 | $18 | $180 |
| Office visit, established patient (20-29 min) | 509 | $59 | $250 |
| Injection, granisetron hydrochloride, 100 mcg | 470 | $0 | $24 |
| Office visit, established patient (30-39 min) | 354 | $89 | $368 |
| Carcinoembryonic antigen (cea) protein level | 349 | $19 | $99 |
| Immunoglobulin level test | 312 | $9 | $56 |
| Administration of chemotherapy into vein, 1 hour or less | 300 | $97 | $707 |
| Infusion into a vein for therapy, prevention, or diagnosis, additional sequential infusion, 1 hour or less | 267 | $22 | $157 |
| Ferritin level test (iron stores) | 265 | $13 | $60 |
| Iron level test | 265 | $6 | $27 |
| Iron binding capacity test | 265 | $9 | $35 |
| Injection, carboplatin, 50 mg | 261 | $2 | $300 |
| Measurement of immunoglobulin light chains | 260 | $17 | $60 |
| Drug injection, under skin or into muscle | 223 | $10 | $96 |
| Injection, zoledronic acid, 1 mg | 215 | $6 | $431 |
| Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less | 178 | $46 | $313 |
| Prothrombin time test (blood clotting) | 111 | $4 | $30 |
| Microscopic examination for white blood cells with manual cell count | 85 | $4 | $22 |
| Lactate dehydrogenase (enzyme) level | 82 | $6 | $31 |
| Injection of additional new drug or substance into vein | 82 | $11 | $108 |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | 81 | $55 | $211 |
| Leuprolide acetate (for depot suspension), 7.5 mg | 81 | $133 | $3,675 |
| Complete blood count (CBC), automated | 80 | $6 | $34 |
| Administration of additional new drug or substance into vein, 1 hour or less | 80 | $49 | $344 |
| Injection, diphenhydramine hcl, up to 50 mg | 77 | $1 | $7 |
| Administration of chemotherapy into vein, each additional hour | 73 | $21 | $161 |
| Reticulated (young) platelet measurement | 71 | $35 | $143 |
| Drawing of blood for a medical problem | 70 | $65 | $264 |
| Irrigation of implanted venous access drug delivery device | 64 | $18 | $114 |
| Thyroid stimulating hormone (TSH) test | 61 | $16 | $80 |
| New patient office visit (45-59 min) | 55 | $110 | $565 |
| Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | 55 | $1 | $17 |
| Unclassified drugs | 51 | $1 | $8 |
| Vitamin B-12 level test | 47 | $15 | $76 |
| Folic acid level test | 44 | $14 | $73 |
| Haptoglobin (serum protein) level | 41 | $12 | $66 |
| Protein measurement, serum | 36 | $10 | $99 |
| Hospital follow-up visit, high complexity | 36 | $87 | $357 |
| Immunologic analysis technique on serum (immunofixation) | 35 | $21 | $160 |
| Administration of hormonal anti-neoplastic chemotherapy under skin or into muscle | 33 | $25 | $145 |
| Red blood count automated, with additional calculations | 31 | $5 | $26 |
| Chemotherapy administration, intravenous infusion technique; initiation of infusion in the office/clinic setting using office/clinic pump/supplies, with continuation of the infusion in the community setting (e.g., home, domiciliary, rest home or assisted l | 31 | $124 | $500 |
| Infusion, normal saline solution , 1000 cc | 30 | $2 | $19 |
| Hospital follow-up visit, moderate complexity | 27 | $61 | $247 |
| Coagulation assessment blood test, plasma or whole blood | 26 | $6 | $52 |
| Flow cytometry technique for dna or cell analysis, first marker | 25 | $56 | $298 |
| Infusion into a vein for hydration, 31-60 minutes | 17 | $25 | $256 |
| New patient office visit, complex (60-74 min) | 17 | $157 | $709 |
| Uric acid level test | 16 | $4 | $25 |
| Infusion into a vein for hydration, each additional hour | 16 | $10 | $75 |
| Office visit, established patient, complex (40-54 min) | 15 | $137 | $496 |
| Beta-2 microglobulin (protein) level | 13 | $16 | $96 |
| Stool analysis for blood to screen for colon tumors | 12 | $4 | $24 |
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 (69%) 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. Shumway is a mixed practice specialist, with above-average Medicare volume (top 14% in TX), and low-engagement industry engagement, with 20 years of practice experience.
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. Shumway experienced with iron infusion (feraheme)?
Does Dr. Shumway receive payments from pharmaceutical companies?
How do Dr. Shumway's costs compare to other medical oncologys in San Antonio?
What does Data Coverage mean?
Is this data up to date?
Explore related providers
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.
Provider corrections: Provider portal · Privacy questions: Privacy Policy · Terms: Terms of Use · Methodology: Methodology