Dr. James Walker, M.D.
What this data tells you about Dr. Walker
Dr. James Walker is a family medicine in Corpus Christi, TX, with 19 years in practice. Based on federal Medicare data, Dr. Walker performed 12,366 Medicare services across 6,469 unique beneficiaries.
Between the years covered by Open Payments, Dr. Walker received a total of $4,993 from 35 pharmaceutical and/or device companies across 324 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in family medicine. 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. Walker 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 |
|---|---|---|---|
| Blood draw (venipuncture) | 1,103 | $8 | $10 |
| Complete blood count (CBC) with differential | 1,070 | $8 | $16 |
| Comprehensive metabolic blood panel | 1,052 | $10 | $16 |
| Office visit, established patient (30-39 min) | 1,009 | $84 | $200 |
| Manual urinalysis test with examination using microscope, non-automated | 929 | $4 | $5 |
| Lipid panel (cholesterol and triglycerides) | 791 | $13 | $20 |
| Creatine kinase (cardiac enzyme) level, total | 688 | $6 | $10 |
| Office visit, established patient (20-29 min) | 671 | $56 | $150 |
| Magnesium level test | 644 | $6 | $10 |
| Hemoglobin A1c test (diabetes monitoring) | 633 | $9 | $15 |
| Thyroid stimulating hormone (TSH) test | 488 | $16 | $31 |
| Thyroid hormone, t3 measurement, total | 368 | $14 | $21 |
| Free thyroxine (T4) test | 352 | $9 | $14 |
| Apolipoprotein level | 282 | $20 | $22 |
| Creatinine test (kidney function) | 223 | $5 | $8 |
| Urine microalbumin test (kidney screening) | 216 | $6 | $8 |
| Vitamin D level test | 208 | $29 | $43 |
| Flu vaccine administration | 135 | $29 | $40 |
| Flu vaccine, high-dose | 131 | $71 | $75 |
| Glutamyltransferase (liver enzyme) level | 121 | $7 | $15 |
| Vitamin B-12 level test | 112 | $15 | $26 |
| Annual wellness visit, follow-up | 102 | $126 | $215 |
| Natriuretic peptide (heart and blood vessel protein) level | 70 | $38 | $50 |
| Respiratory infectious agent detection by rna for severe acute respiratory syndrome coronavirus 2 (covid 19), influenza a, influenza b, and respiratory syncytial virus, upper respiratory specimen, each reported as detected or not detected | 67 | $138 | $154 |
| Prostate cancer screening; prostate specific antigen test (psa) | 65 | $19 | $27 |
| Office visit, established patient, complex (40-54 min) | 63 | $134 | $250 |
| Ferritin level test (iron stores) | 60 | $13 | $26 |
| Insulin measurement, total | 56 | $10 | $20 |
| Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | 52 | $31 | $110 |
| Uric acid level test | 49 | $4 | $8 |
| PSA test (prostate cancer screening) | 44 | $18 | $27 |
| Basic metabolic blood panel | 43 | $8 | $13 |
| Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | 39 | $38 | $120 |
| Face-to-face behavioral counseling for obesity, 15 minutes | 38 | $25 | $40 |
| Iron level test | 37 | $6 | $11 |
| Electrocardiogram (EKG), 12-lead | 36 | $7 | $65 |
| Drug injection, under skin or into muscle | 33 | $8 | $30 |
| New patient office visit (45-59 min) | 32 | $90 | $250 |
| Office visit, established patient (10-19 min) | 29 | $31 | $75 |
| Iron binding capacity test | 27 | $9 | $15 |
| New patient office visit, complex (60-74 min) | 26 | $126 | $300 |
| Lactate dehydrogenase (enzyme) level | 24 | $6 | $10 |
| Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 22 | $281 | $315 |
| Pneumonia vaccine administration | 22 | $30 | $40 |
| Sed rate test (inflammation marker) | 20 | $3 | $4 |
| C-reactive protein test (inflammation marker) | 19 | $5 | $8 |
| Alpha-fetoprotein (afp) level, serum | 18 | $16 | $30 |
| Folic acid level test | 18 | $14 | $27 |
| Thyroxine (thyroid chemical), total | 16 | $7 | $10 |
| Administration of vaccine | 13 | $14 | $30 |
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 (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
4.9 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. Walker is a mixed practice specialist, with above-average Medicare volume (top 1% in TX), and high industry engagement (low-engagement, top 13%), with 19 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. Walker experienced with blood draw (venipuncture)?
Does Dr. Walker receive payments from pharmaceutical companies?
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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.
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