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WALKER, JAMESM.D. NPI 1932218971 Clinician

Family Practice · CORPUS CHRISTI, TX

Specialty Family Practice — from billed Medicare claims
Trained UNIVERSITY OF TEXAS MEDICAL SCHOOL AT SAN ANTONIO — medical school, self-reported to CMS
In practice about 24 years since medical school (class of 2002, self-reported to CMS)
Location CORPUS CHRISTI, TX · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 53 codes billed · 13,971 disclosed services (CY2024 — most recent year in data)
Current groups
member of 2 groups; the volumes below are this clinician's personal volume and are not attributed to any single group

Group affiliation since 2019

20192026
SHEA PHYSICAL THERAPY SPECIALISTS LLC
2024–2026
CORPUS CHRISTI MEDICAL ASSOCIATES, P.A.
2019–2026

The roster archive begins in 2019, so a span starting at 2019 may reach back further. Membership spans only — no volume is attributed to any group here.

NPPES registry · CMS Doctors & Clinicians registry · Medicare Part B physician/supplier claims · NPPES record last updated 2012-04

Year: 2024 · 2023 · 2022  · 2021  · 2020 

Provider overview · all codes · CY2024

The full analytics for this provider

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The billed-volume positioning, practice focus, and economics behind this provider — computed on the same disclosed Medicare Part B data.

This provider's disclosed Medicare payments across all codes were in CY2024. Unlock to see the figure.

  • Payment, service & beneficiary totals — the disclosed scale, all codes
  • Practice profile — focus & reach — top codes by share of services
  • Office vs. facility setting mix — place-of-service code split
  • Volume over five years — discrete yearly counts, no rate
  • Peer positioning — service volume — percentile among specialty peers, cohort & year disclosed
  • Peer positioning — code breadth — how many codes billed, vs peers

Peer positioning shows billed-volume and code-breadth positions among specialty peers, not measures of care (a provider's true volume position can only be higher, never lower). All figures disclosed Medicare Part B fee-for-service; volumes are personal to this NPI, not attributed to any group.

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Procedures billed to Medicare Part B (2024)

Medicare Part B FFS · CY2024 · as published by CMS
CodeDescription Services Beneficiary-episodes Avg charge Avg Medicare payment
G2211 Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's
36415 Insertion of needle into vein for collection of blood sample
85025 Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
80053 Blood test, comprehensive group of blood chemicals
81000 Manual urinalysis test with examination using microscope, non-automated
80061 Blood test, lipids (cholesterol and triglycerides)
82550 Creatine kinase (cardiac enzyme) level, total
83036 Hemoglobin a1c level
84443 Blood test, thyroid stimulating hormone (tsh)
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
83735 Magnesium level
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
84480 Thyroid hormone, t3 measurement, total
84439 Thyroxine (thyroid chemical), free
82570 Creatinine level to test for kidney function or muscle injury
82043 Urine microalbumin (protein) level
82306 Vitamin d-3 level
G0444 Annual depression screening, 5 to 15 minutes
G0442 Annual alcohol misuse screening, 5 to 15 minutes
82977 Glutamyltransferase (liver enzyme) level
83525 Insulin measurement, total
G0136 Administration of a standardized, evidence-based social determinants of health risk assessment tool, 5-15 minutes
G0008 Administration of influenza virus vaccine
90662 Influenza vaccine split virus, preservative free
82607 Cyanocobalamin (vitamin b-12) level
83615 Lactate dehydrogenase (enzyme) level
G0447 Face-to-face behavioral counseling for obesity, 15 minutes
82728 Ferritin (blood protein) level
G0103 Prostate cancer screening; prostate specific antigen test (psa)
84550 Uric acid level, blood
83880 Natriuretic peptide (heart and blood vessel protein) level
83540 Iron level
G0446 Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes
83550 Iron binding capacity
84153 Psa (prostate specific antigen) measurement, total
80048 Blood test, basic group of blood chemicals (calcium, total)
82746 Folic acid level, serum
G0180 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
90677 Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use
G0009 Administration of pneumococcal vaccine
G0179 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
87631 Detection test by nucleic acid for multiple types of respiratory virus, multiple types or subtypes, 3-5 targets
86140 Measurement c-reactive protein for detection of infection or inflammation
85652 Red blood cell sedimentation rate, to detect inflammation, automated
99496 Transitional care management services for problem of high complexity
93000 Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report
82105 Alpha-fetoprotein (afp) level, serum
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more
G0438 Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more
0241U 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
G0402 Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment

These are this provider's own Medicare Part B fee-for-service volumes (CMS public data). CMS suppresses rows with fewer than 11 beneficiaries, so low-volume codes may be missing entirely — absence is not zero. Beneficiary-episodes count CMS's per-setting beneficiary figures, not unique patients. Average charge and average Medicare payment are weighted by service volume across office and facility settings. Volumes on this page are personal to the NPI and are not attributed to any physician group. See Methods & Sources.