NEVVI Medicare utilization intelligence

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PORTER, GREGORYM.D. NPI 1790741262 Clinician

Anesthesiology · GRASS VALLEY, CA

Specialty Anesthesiology — from billed Medicare claims
Trained STATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE — medical school, self-reported to CMS
In practice about 36 years since medical school (class of 1990, self-reported to CMS)
Location GRASS VALLEY, CA · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 23 codes billed · 4,107 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20242026
INTERVENTIONAL PAIN SOLUTIONS PC
2024–2026

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 2024-06

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
99443 Telephone medical discussion with physician, 21-30 minutes
00142 Anesthesia for lens surgery
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
96138 Administration of psychological or neuropsychological test by technician, first 30 minutes
96132 Evaluation of neuropsychological test, first hour
96130 Evaluation of psychological test, first hour
99442 Telephone medical discussion with physician, 11-20 minutes
G0396 Alcohol and/or substance (other than tobacco) misuse structured assessment (e.g., audit, dast), and brief intervention 15 to 30 minutes
99213 Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more
97750 Test or measurement for functional capacity, each 15 minutes
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
64493 Injection of lower or sacral spine facet joint using imaging guidance, single level
64494 Injection of lower or sacral spine facet joint using imaging guidance, second level
G0444 Annual depression screening, 5 to 15 minutes
00140 Anesthesia for other procedure on eye
64483 Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, single level
99441 Telephone medical discussion with physician, 5-10 minutes
G0506 Comprehensive assessment of and care planning for patients requiring chronic care management services (list separately in addition to primary monthly care management service)
64484 Injection of anesthetic and/or steroid drug into sacral spine nerve root using imaging guidance, each additional level
64490 Injection of upper or middle spine facet joint using imaging guidance, single level
64491 Injection of upper or middle spine facet joint using imaging guidance, second level
00103 Anesthesia for procedure on eyelid
64635 Destruction of lower or sacral spinal facet joint nerves using imaging guidance, single facet joint

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.