NEVVI Medicare utilization intelligence

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PARKER, WILLIAMM.D. NPI 1295778686 Clinician

General Surgery · SAN ANTONIO, TX

Specialty General Surgery — from billed Medicare claims
Trained UNIVERSITY OF TEXAS MEDICAL SCHOOL AT HOUSTON — medical school, self-reported to CMS
In practice about 37 years since medical school (class of 1989, self-reported to CMS)
Location SAN ANTONIO, TX · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 12 codes billed · 1,649 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
INTERVENTIONAL PARTNERS PLLC
2020–2026
NH PHYSICIANS GROUP, PLLC
2019

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 2024-03

Year: 2024 · 2023 · 2022  · 2021  · 2020 

Provider overview · all codes · CY2024

The full analytics for this provider

Premium

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
93970 Ultrasound study of arm or leg veins with compression and maneuvers
36478 Laser destruction of incompetent vein of arm or leg using imaging guidance
93971 Ultrasound study of one arm or leg veins with compression and maneuvers
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
36475 Destruction of first incompetent vein of arm or leg using radiofrequency and imaging guidance
36479 Laser destruction of incompetent veins of arm or leg using imaging guidance, subsequent
36465 Injection of chemical agent into single incompetent vein of leg using ultrasound guidance
36466 Injection of chemical agent into multiple incompetent veins of same leg using ultrasound guidance
99487 Complex chronic care management services for two or more chronic conditions, first 60 minutes of clinical staff time directed by health care professional, per calendar month
36476 Destruction of subsequent incompetent veins of arm or leg using radiofrequency and imaging guidance
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more

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.