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

Methodologyโ€ขDownload Data
  1. Home
  2. Providers
  3. Michael Sherman
๐ŸŽ—๏ธ
MDIndividual

Michael Sherman, M.D., PHD

NPI: 1164643359
Walnut Creek, CA
10 years of data
Hematology-Oncology
$38.9M
Total Payments
430
Beneficiaries
3.3M
Services
2.6x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$38.9M
Specialty median$339.6K
Rank #28 of 60 in specialty

๐Ÿ“‹ Key Findings

1Billed $38.9M over 10 years
22.6x markup ratio (above median)
399th percentile in Hematology-Oncology by payments
41.3K services/day โ€” physically implausible
54 procedures with >3x markup

โš ๏ธ This provider averages 1.3K services per working day โ€” physically unusual for an individual practitioner

Based on 3.3M total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $38.9M in total Medicare payments ranks in the 99th percentile of Hematology-Oncology providers nationally.

Averaging 1.3K 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$29.73$11.412.61x$18.32$4.3M373.4K46
2015$27.44$10.612.59x$16.83$4.7M443.6K43
2016$32.51$12.892.52x$19.62$5.3M413.8K47
2017$28.88$11.222.57x$17.66$4.4M393.9K43
2018$31.48$11.732.68x$19.75$3.9M335.2K45
2019$32.47$12.292.64x$20.18$3.3M267.2K38
2020$29.79$10.922.73x$18.87$3.1M285.6K42
2021$28.92$11.292.56x$17.63$2.5M221.3K42
2022$25.50$9.642.65x$15.86$3.5M359.3K44
2023$46.48$18.242.55x$28.24$3.9M213.0K40

Top Procedures (20)

J2505Injection, pegfilgrastim, 6 mg
$6.4M
2.1K services$3.1K/svc2.12x markup
J0897Injection, denosumab, 1 mg
$5.6M
388.5K services$14.43/svc2.93x markup
78815Nuclear medicine study from skull base to mid-thigh with ct scan
$5.2M
3.6K services$1.5K/svc2.41x markup
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)โš  3.4x markup
$3.5M
1.2M services$2.94/svc3.40x markup
J9310Injection, rituximab, 100 mg
$2.1M
3.4K services$601.18/svc2.00x markup
J9035Injection, bevacizumab, 10 mg
$2.0M
37.4K services$54.20/svc2.12x markup
99214Established patient office or other outpatient visit, 30-39 minutes
$1.6M
15.6K services$100.68/svc2.28x markup
99215Established patient office or other outpatient visit, 40-54 minutes
$1.4M
10.2K services$141.40/svc2.19x markup
96413Administration of chemotherapy into vein, 1 hour or less
$1.1M
7.8K services$138.33/svc2.89x markup
A9595Piflufolastat f-18, diagnostic, 1 millicurie
$909.2K
1.9K services$476.75/svc1.47x markup
A9552Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries
$787.8K
3.5K services$223.60/svc1.69x markup
J9271Injection, pembrolizumab, 1 mg
$650.0K
15.2K services$42.76/svc2.88x markup
J9395Injection, fulvestrant, 25 mg
$622.7K
8.3K services$75.01/svc2.57x markup
78816Nuclear medicine study whole body with ct scan
$471.1K
335 services$1.4K/svc2.85x markup
J0641Injection, levoleucovorin, not otherwise specified, 0.5 mgโš  4.3x markup
$414.0K
516.7K services$0.80/svc4.25x markup
99213Established patient office or other outpatient visit, 20-29 minutes
$413.5K
6.5K services$63.22/svc2.44x markup
J2353Injection, octreotide, depot form for intramuscular injection, 1 mg
$410.0K
3.8K services$109.34/svc1.87x markup
J2469Injection, palonosetron hcl, 25 mcgโš  3.4x markup
$356.3K
32.0K services$11.13/svc3.44x markup
J2796Injection, romiplostim, 10 micrograms
$333.7K
4.8K services$69.85/svc2.93x markup
96375Injection of additional new drug or substance into veinโš  3.8x markup
$293.1K
14.9K services$19.67/svc3.82x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
J2505Injection, pegfilgrastim, 6 mg2.1K$6.4M$3.1K2.12x
J0897Injection, denosumab, 1 mg388.5K$5.6M$14.432.93x
78815Nuclear medicine study from skull base to mid-thigh with ct scan3.6K$5.2M$1.5K2.41x
J0881Injection, darbepoetin alfa, 1 microgram (non-esrd use)1.2M$3.5M$2.943.40x
J9310Injection, rituximab, 100 mg3.4K$2.1M$601.182.00x
J9035Injection, bevacizumab, 10 mg37.4K$2.0M$54.202.12x
99214Established patient office or other outpatient visit, 30-39 minutes15.6K$1.6M$100.682.28x
99215Established patient office or other outpatient visit, 40-54 minutes10.2K$1.4M$141.402.19x
96413Administration of chemotherapy into vein, 1 hour or less7.8K$1.1M$138.332.89x
A9595Piflufolastat f-18, diagnostic, 1 millicurie1.9K$909.2K$476.751.47x
A9552Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries3.5K$787.8K$223.601.69x
J9271Injection, pembrolizumab, 1 mg15.2K$650.0K$42.762.88x
J9395Injection, fulvestrant, 25 mg8.3K$622.7K$75.012.57x
78816Nuclear medicine study whole body with ct scan335$471.1K$1.4K2.85x
J0641Injection, levoleucovorin, not otherwise specified, 0.5 mg516.7K$414.0K$0.804.25x
99213Established patient office or other outpatient visit, 20-29 minutes6.5K$413.5K$63.222.44x
J2353Injection, octreotide, depot form for intramuscular injection, 1 mg3.8K$410.0K$109.341.87x
J2469Injection, palonosetron hcl, 25 mcg32.0K$356.3K$11.133.44x
J2796Injection, romiplostim, 10 micrograms4.8K$333.7K$69.852.93x
96375Injection of additional new drug or substance into vein14.9K$293.1K$19.673.82x

Markup Analysis

Charge-to-Payment Ratio

2.6x

This provider submits charges 2.6 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.6x means for every $100 Medicare pays, this provider initially charges $260. This is higher than the national average.

Location

Walnut Creek, CA

Provider Verification

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

Similar Providers

Other Hematology-Oncology providers in CA for peer comparison.

Michael Sherman (you)
$38.9M
Luke Dreisbach, M.D.
$77.2M
Sachin Gupta, M.D.
$55.1M
Ravi Rao, MDโš ๏ธ
$49.1M
Nerses Tchekmedyian, M.D.
$38.0M
Kishore Sehgal, M.D.
$36.2M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Luke Dreisbach, M.D.Rancho Mirage, CA$77.2Mโœ“ Clear
Sachin Gupta, M.D.Fresno, CA$55.1Mโœ“ Clear
Ravi Rao, MDFresno, CA$49.1Mโš ๏ธ Flagged
Nerses Tchekmedyian, M.D.Irvine, CA$38.0Mโœ“ Clear
Kishore Sehgal, M.D.Hemet, CA$36.2Mโœ“ Clear

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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