Medicare Enrolled
Dr. John Walker, MD
Family Medicine · The Woodlands, TX
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Walker from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Walker
Dr. John Walker is a family medicine specialist in The Woodlands, TX, with 20 years of NPI registration. Based on federal Medicare data, Dr. Walker performed 3,480 Medicare services in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Walker received a total of $4,084 from 40 pharmaceutical and/or device companies across 251 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. 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. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years of NPI registration
▲ Top 7% volume in TX
$4,084 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗3,480
Medicare services
Top 7% in TX for family medicine
Not available
Unique patients (not deduplicated)
$36
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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 |
|---|---|---|---|
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
650 | $75 | $330 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
491 | $8 | $10 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
298 | $53 | $222 |
| Comprehensive metabolic blood panel A blood test that measures a group of chemicals, including glucose, electrolytes, and kidney and liver function markers. |
241 | $10 | $43 |
| Lipid panel (cholesterol and triglycerides) A blood test that measures cholesterol and triglyceride levels. |
216 | $13 | $55 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
205 | $10 | $40 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
141 | $8 | $35 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
117 | $16 | $69 |
| Remote patient monitoring management, 20 min/month Management based on results from remote vital sign monitoring for the first 20 minutes per calendar month. |
106 | $36 | $157 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
99 | $13 | $61 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
97 | $125 | $357 |
| Remote patient monitoring device, 30 days Initial setup of devices for remote monitoring of body functions with daily data transmission or alerts. This service covers the first 30 days of the monitoring period. |
91 | $36 | $195 |
| Complete blood count (CBC) with differential An automated laboratory test that measures the levels of red blood cells, white blood cells, and platelets in the blood, including a breakdown of the different types of white blood cells. |
90 | $8 | $32 |
| Assessment of emotional or behavioral problems An evaluation to identify and understand emotional or behavioral issues. This process involves reviewing symptoms and behaviors to determine the nature of the concerns. |
83 | $3 | $16 |
| 3D screening mammography (tomosynthesis) A screening imaging test of the breast using 3D technology to detect potential abnormalities. |
49 | $51 | $126 |
| Screening mammography An X-ray of the breast used to detect breast cancer in women who have no signs or symptoms of the disease. |
49 | $124 | $324 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
44 | $11 | $105 |
| Respiratory virus detection test A laboratory test using immunoassay techniques to detect the presence of severe acute respiratory syndrome coronavirus and influenza viruses. |
33 | $64 | $220 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
32 | $71 | $261 |
| PSA test (prostate cancer screening) A blood test that measures the level of prostate-specific antigen to screen for prostate cancer. |
30 | $19 | $75 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
27 | $11 | $52 |
| Urinalysis with microscopic exam A urine test performed manually that includes examining the sample under a microscope to check for abnormalities. |
25 | $3 | $13 |
| Chest X-ray, 2 views An X-ray imaging test of the chest that captures two different angles to visualize the lungs, heart, and chest wall. |
24 | $14 | $60 |
| Vitamin B-12 level test A blood test that measures the amount of vitamin B-12 in your body. |
22 | $15 | $62 |
| PSA test (prostate cancer screening) | 22 | $18 | $75 |
| SARS-CoV-2 vaccine, 30 mcg/0.3 mL Administration of the SARS-CoV-2 (COVID-19) vaccine containing 30 micrograms of antigen in a 0.3 milliliter dose. |
21 | $39 | $120 |
| Vitamin D level test A blood test to measure the amount of Vitamin D-3 in your body. |
21 | $29 | $111 |
| Urine microalbumin test (kidney screening) A laboratory test that measures the amount of microalbumin, a small protein, in a urine sample. This test is used to detect early signs of kidney damage. |
20 | $6 | $23 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
20 | $120 | $446 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
18 | $3 | $10 |
| Bone density scan (DEXA) A test that uses low-dose X-rays to measure bone mineral density in the hip, pelvis, and spine. It helps assess bone strength and risk of fractures. |
17 | $37 | $126 |
| Folic acid level test A blood test that measures the amount of folic acid in the serum. |
16 | $14 | $60 |
| Annual wellness visit, initial visit A yearly appointment to review your health and create a personalized prevention plan. This initial visit focuses on preventive care and health assessment. |
16 | $160 | $529 |
| Initial preventive physical examination, new Medicare beneficiary A comprehensive preventive health visit for new Medicare beneficiaries during their first 12 months of enrollment. The service is conducted as a face-to-face visit and is limited to preventive care. |
14 | $160 | $512 |
| Adm sarscv2 bvl 50mcg/.5ml a | 13 | $39 | $120 |
| Free thyroxine (T4) test A blood test that measures the level of free thyroxine, a thyroid hormone, in the bloodstream. |
11 | $8 | $37 |
| Strep A rapid test A rapid test to detect Group A Streptococcus bacteria using an immunoassay method with direct visual observation. |
11 | $16 | $49 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. These counts do not measure clinical quality or years of experience.
Industry Payment Transparency
Open Payments through 2024 ↗$4,084
Total received (2018-2024)
Avg $583/year across 7 years
Top 16% in TX for family medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
40
Companies
251
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$320
2023
$806
2022
$792
2021
$390
2020
$378
2019
$466
2018
$932
Payments by company (2024)
ABBVIE INC.
$84
PFIZER INC.
$67
Seqirus USA Inc
$45
Novo Nordisk Inc
$35
Amgen Inc.
$20
Boehringer Ingelheim Pharmaceuticals, Inc.
$19
Lilly USA, LLC
$17
Neos Therapeutics, LP
$17
AstraZeneca Pharmaceuticals LP
$16
Top 3 companies account for 61.2% of 2024 payments
All-time payments by company (2018-2024) ›
Novo Nordisk Inc
$1,001
Lilly USA, LLC
$488
AstraZeneca Pharmaceuticals LP
$294
GlaxoSmithKline, LLC.
$235
Boehringer Ingelheim Pharmaceuticals, Inc.
$216
Abbott Laboratories
$189
PFIZER INC.
$168
AbbVie Inc.
$133
Radius Health, Inc.
$113
Takeda Pharmaceuticals U.S.A., Inc.
$86
ABBVIE INC.
$84
Seqirus USA Inc
$82
Shire North American Group Inc
$81
SANOFI PASTEUR INC.
$78
Synergy Pharmaceuticals Inc
$74
AbbVie, Inc.
$69
Amgen Inc.
$61
Lucid Diagnostics Inc.
$53
Noven Therapeutics, LLC
$48
Allergan Inc.
$41
Merck Sharp & Dohme Corporation
$41
Eisai Inc.
$41
Dynavax Technologies Corporation
$35
Sanofi Pasteur Inc.
$35
Hologic Sales and Service, LLC
$32
Allergan, Inc.
$30
SANOFI-AVENTIS U.S. LLC
$28
Cranial Technologies, Inc
$28
Corium, LLC
$27
MEDLINE INDUSTRIES LP
$27
Bayer Healthcare Pharmaceuticals Inc.
$20
Ironshore Pharmaceuticals Inc.
$20
Biohaven Pharmaceutical Holding Company Ltd.
$19
IBSA Pharma Inc.
$19
Amarin Pharma Inc.
$18
Exact Sciences Corporation
$18
Neos Therapeutics, LP
$17
Aytu BioScience, Inc
$14
Medtronic, Inc.
$13
DERMIRA, INC.
$12
Top 3 companies account for 43.6% of all-time payments
Associated products mentioned in payments ›
AIRSUPRA · AZSTARYS · Adzenys XR-ODT · Aimovig · Androgel · Axium Sheath Braided DRG · BEXSERO · BREO · BREZTRI · BYSTOLIC · CHANTIX · Cologuard Collection Kit · Dayvigo · Doc Band · EMGALITY · ETERNA · FARXIGA · FASENRA · FLUBLOK QUADRIVALENT NORTHERN HEMISPHERE · FLUCELVAX QUADRIVALENT · FLUZONE HIGH-DOSE · FLUZONE QUADRIVALENT · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · Fluad · FreeStyle Libre 2 · GATTEX · Heplisav-B · JANUVIA · JARDIANCE · JORNAY PM · Kerendia · MENACTRA · MOUNJARO · MYDAYIS · NURTEC ODT · Natesto · Otezla · Ozempic · PNEUMOVAX 23 · PREVNAR 13 · PREVNAR 20 · PROCLAIM · Proclaim Family of SCS IPGs · QBREXZA · ROTATEQ · RYBELSUS · Rybelsus · SECUADO · SHINGRIX · SOLIQUA · SYNCHROMED · SYNTHROID · Synthroid · THINPREP 2000 PROCESSOR · TOUJEO · TRINTELLIX · TRULICITY · Tirosint · Tresiba · Trulance · Tymlos · UBRELVY · VRAYLAR · VYVANSE · Vascepa · Victoza · Wegovy · Xelstrym
Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Geographic Context
Family medicine physicians in nearby ZIP areas
635
County median income
$97,266
Nearest hospital to ZIP centroid (approximate)
ST LUKE'S THE WOODLANDS HOSPITAL
4.1 mi
4.1 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Walker is a clinical cardiology specialist, with above-average Medicare volume (top 7% in TX), with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Walker experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Walker performed 650 office visit, established patient (30-39 min) services. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Walker receive payments from pharmaceutical companies?
Yes. Dr. Walker received a total of $4,084 from 40 companies across 251 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Walker's costs compare to other family medicine physicians in The Woodlands?
Dr. Walker's average Medicare payment per service is $36. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Walker) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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. Data Coverage reflects 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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