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RITTER, JONMD NPI 1366460784 Clinician

Pathology · SAINT LOUIS, MO

Specialty Pathology — from billed Medicare claims
Trained UNIVERSITY OF MINNESOTA HOMEOPATHIC MEDICINE - NLG — medical school, self-reported to CMS
In practice about 38 years since medical school (class of 1988, self-reported to CMS)
Location SAINT LOUIS, MO · NPPES registered location
Active in data Billed Medicare 2020–2024 (5 consecutive years)
Scale 12 codes billed · 1,812 disclosed services (CY2024 — most recent year in data)
Current groups

Group affiliation since 2019

20192026
WASHINGTON UNIVERSITY
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 2025-04

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
88305 Pathology examination of tissue using a microscope, intermediate complexity
88341 Special stained specimen slides to examine tissue, each additional procedure
88331 Pathology examination of specimen during surgery, first tissue block
88307 Pathology examination of tissue using a microscope, moderately high complexity
88360 Microscopic genetic analysis of tumor, manual
88342 Special stained specimen slides to examine tissue, initial procedure
88363 Examination of archival tissue for genetic analysis
76098 X-ray of surgical specimen
88304 Pathology examination of tissue using a microscope, moderately low complexity
88309 Pathology examination of tissue using a microscope, high complexity
88312 Special stained specimen slides to identify organisms including interpretation and report
88311 Preparation of tissue for examination by removing any calcium present

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.