OpenMedicare
Start Here
Explore
Fraud
Investigations
Data
Tools
About

Footer

OpenMedicare

Independent Medicare data journalism

Sister Sites

  • OpenMedicaid
  • OpenFeds
  • OpenSpending

Explore

  • Providers
  • Procedures
  • States
  • Specialties
  • Search

Fraud Analysis

  • Still Out There (AI)
  • Fraud Overview
  • Fraud Watchlist
  • Deep Dive Profiles
  • Impossible Numbers
  • Report Fraud

Investigations

  • The Algorithm Knows
  • How We Built the Model
  • Internal Medicine Crisis
  • Florida & California Fraud
  • Million Dollar Flagged
  • All Investigations

Tools

  • Provider Lookup
  • Compare
  • Cost Calculator
  • Your Medicare Dollar
  • Downloads

About

  • About OpenMedicare
  • Methodology
  • Glossary
  • Data Sources
  • API Docs
  • Updates
Data Sources: Centers for Medicare & Medicaid Services (CMS), Medicare Provider Utilization and Payment Data
Disclaimer: This site is an independent journalism project. Data analysis and editorial content are not affiliated with or endorsed by CMS or any government agency. All spending figures are based on publicly available Medicare payment records.
Sister Sites: OpenMedicaid ยท OpenFeds ยท OpenSpending

ยฉ 2026 OpenMedicare. Independent data journalism. Built by TheDataProject.ai

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Jon Keller
๐Ÿ”ฌ
MDIndividual

Jon Keller, MD

NPI: 1235225558
Palo Alto, CA
10 years of data
Pathology
$61.6M
Total Payments
2.1K
Beneficiaries
5.5M
Services
4.55x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$61.6M
Specialty median$84.1K
Rank #1 of 7 in specialty

๐Ÿ“‹ Key Findings

1Billed $61.6M over 10 years
24.55x markup ratio (above median)
399th percentile in Pathology by payments
42.2K services/day โ€” physically implausible
518 procedures with >3x markup

โš ๏ธ This provider averages 2.2K services per working day โ€” physically unusual for an individual practitioner

Based on 5.5M total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $61.6M in total Medicare payments ranks in the 99th percentile of Pathology providers nationally.

Averaging 2.2K services per working day raises questions about billing patterns.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

Submitted Charges vs. Medicare Payments

Average per-service amounts submitted by the provider compared to what Medicare actually paid โ€” the gap represents the markup.

YearAvg SubmittedAvg PaidMarkup RatioGap per ServiceTotal PaymentsServicesBeneficiaries
2014$50.07$11.334.42x$38.74$5.1M452.9K207
2015$50.47$11.514.38x$38.96$5.6M486.3K213
2016$46.66$11.514.05x$35.15$5.9M510.5K216
2017$46.61$11.414.09x$35.20$6.3M549.0K228
2018$48.13$10.984.38x$37.15$6.4M583.3K220
2019$49.83$9.915.03x$39.92$5.8M588.9K202
2020$51.84$11.734.42x$40.11$6.0M514.1K192
2021$54.90$11.804.65x$43.10$7.0M592.2K197
2022$54.99$11.704.70x$43.29$7.1M604.6K205
2023$57.75$10.945.28x$46.81$6.4M586.6K214

Top Procedures (20)

80053Blood test, comprehensive group of blood chemicalsโš  5.5x markup
$5.0M
433.5K services$11.61/svc5.50x markup
80061Blood test, lipids (cholesterol and triglycerides)โš  5.5x markup
$4.4M
315.5K services$14.00/svc5.51x markup
84443Blood test, thyroid stimulating hormone (tsh)โš  5.0x markup
$4.3M
219.5K services$19.39/svc4.98x markup
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell countโš  5.1x markup
$4.1M
459.6K services$8.91/svc5.06x markup
U0003Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r
$4.0M
48.9K services$81.55/svc1.23x markup
36415Insertion of needle into vein for collection of blood sampleโš  3.8x markup
$3.6M
1.0M services$3.52/svc3.77x markup
82306Vitamin d-3 levelโš  3.4x markup
$3.6M
104.1K services$34.60/svc3.40x markup
83036Hemoglobin a1c levelโš  5.1x markup
$2.5M
226.2K services$11.08/svc5.08x markup
80048Blood test, basic group of blood chemicals (calcium, total)โš  5.5x markup
$2.1M
219.6K services$9.42/svc5.51x markup
84153Psa (prostate specific antigen) measurement, totalโš  5.1x markup
$1.3M
63.1K services$20.97/svc5.10x markup
82607Cyanocobalamin (vitamin b-12) levelโš  5.1x markup
$1.3M
72.5K services$17.27/svc5.06x markup
83970Parathormone (parathyroid hormone) levelโš  5.3x markup
$1.2M
27.3K services$45.55/svc5.25x markup
87086Bacterial colony count, urineโš  5.0x markup
$1.0M
110.5K services$9.31/svc5.04x markup
82728Ferritin (blood protein) levelโš  5.2x markup
$827.2K
53.6K services$15.44/svc5.19x markup
83880Natriuretic peptide (heart and blood vessel protein) levelโš  5.1x markup
$741.5K
18.0K services$41.19/svc5.11x markup
G0103Prostate cancer screening; prostate specific antigen test (psa)โš  4.1x markup
$725.6K
34.0K services$21.33/svc4.11x markup
U0005Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, cdc or non-cdc, making use of high throughput technologies, completed within
$718.3K
28.9K services$24.81/svc1.03x markup
87186Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilutionโš  5.5x markup
$666.9K
66.7K services$9.99/svc5.54x markup
82570Creatinine level to test for kidney function or muscle injuryโš  5.4x markup
$616.7K
104.7K services$5.89/svc5.39x markup
85027Complete blood cell count (red cells, white blood cell, platelets), automated testโš  3.9x markup
$544.2K
72.8K services$7.47/svc3.93x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
80053Blood test, comprehensive group of blood chemicals433.5K$5.0M$11.615.50x
80061Blood test, lipids (cholesterol and triglycerides)315.5K$4.4M$14.005.51x
84443Blood test, thyroid stimulating hormone (tsh)219.5K$4.3M$19.394.98x
85025Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count459.6K$4.1M$8.915.06x
U0003Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, making use of high throughput technologies as described by cms-2020-01-r48.9K$4.0M$81.551.23x
36415Insertion of needle into vein for collection of blood sample1.0M$3.6M$3.523.77x
82306Vitamin d-3 level104.1K$3.6M$34.603.40x
83036Hemoglobin a1c level226.2K$2.5M$11.085.08x
80048Blood test, basic group of blood chemicals (calcium, total)219.6K$2.1M$9.425.51x
84153Psa (prostate specific antigen) measurement, total63.1K$1.3M$20.975.10x
82607Cyanocobalamin (vitamin b-12) level72.5K$1.3M$17.275.06x
83970Parathormone (parathyroid hormone) level27.3K$1.2M$45.555.25x
87086Bacterial colony count, urine110.5K$1.0M$9.315.04x
82728Ferritin (blood protein) level53.6K$827.2K$15.445.19x
83880Natriuretic peptide (heart and blood vessel protein) level18.0K$741.5K$41.195.11x
G0103Prostate cancer screening; prostate specific antigen test (psa)34.0K$725.6K$21.334.11x
U0005Infectious agent detection by nucleic acid (dna or rna); severe acute respiratory syndrome coronavirus 2 (sars-cov-2) (coronavirus disease [covid-19]), amplified probe technique, cdc or non-cdc, making use of high throughput technologies, completed within28.9K$718.3K$24.811.03x
87186Evaluation of antimicrobial drug (antibiotic, antifungal, antiviral), microdilution or agar dilution66.7K$666.9K$9.995.54x
82570Creatinine level to test for kidney function or muscle injury104.7K$616.7K$5.895.39x
85027Complete blood cell count (red cells, white blood cell, platelets), automated test72.8K$544.2K$7.473.93x

Markup Analysis

Charge-to-Payment Ratio

4.55x

This provider submits charges 4.55 times higher than what Medicare actually pays.

What This Means

A markup ratio of 4.55x means for every $100 Medicare pays, this provider initially charges $455. This is higher than the national average.

Location

Palo Alto, CA

Provider Verification

Always verify provider credentials and location before scheduling appointments. This data reflects Medicare payments and may not include all practice locations.

Related

Browse
โ† Back to Provider Directory
State
All providers in CA โ†’
Specialty
All Pathology providers โ†’
Tool
Compare this provider โ†’
Analysis
Fraud Watchlist โ†’
Search
Search all providers โ†’

Share This Provider

Share this provider's Medicare payment information

Share:

Data Sources

  • โ€ข Centers for Medicare & Medicaid Services (CMS)
  • โ€ข Medicare Provider Utilization and Payment Data (2014-2023)
  • โ€ข National Plan and Provider Enumeration System (NPPES)

Last Updated: February 2026 (data through 2023, the latest CMS release)

Note: All data is from publicly available Medicare records. OpenMedicare is an independent journalism project not affiliated with CMS.

Believe this data is inaccurate? Dispute this data