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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. Basil Hamblin
๐Ÿฉบ
MDIndividual

Basil Hamblin, MD

NPI: 1114095106
Point Reyes Station, CA
10 years of data
Family Practice
$4.4M
Total Payments
21.4K
Beneficiaries
61.3K
Services
2.46x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$4.4M
Specialty median$55.2K

๐Ÿ“‹ Key Findings

1Billed $4.4M over 10 years
22.46x markup ratio (above median)
399th percentile in Family Practice by payments
4Payments surged 92% in 2023
51 procedure with >3x markup
โœ“ No flags detected

๐Ÿ”Ž Data Analysis

This provider's $4.4M in total Medicare payments ranks in the 99th percentile of Family Practice providers nationally.

Medicare payments to this provider grew 307% from 2014 to 2023.

AI-generated analysis based on Medicare payment data.

Annual Medicare Payments

Annual Services Provided

Avg Payment per Service

Markup Ratio Over Time

๐Ÿ“ˆ

Notable: Payments increased 92% in 2023

Year-over-year payment surges can indicate changes in practice volume, new services, or billing pattern shifts.

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$135.40$54.282.49x$81.12$286.7K4.9K2.2K
2015$156.72$64.532.43x$92.19$323.1K5.3K2.2K
2016$147.88$58.542.53x$89.34$267.7K4.5K1.9K
2017$141.14$60.012.35x$81.13$257.3K4.1K1.8K
2018$179.12$62.992.84x$116.13$282.0K4.7K1.6K
2019$195.60$73.642.66x$121.96$414.3K6.3K2.2K
2020$193.33$75.932.55x$117.40$418.3K6.0K2.3K
2021$218.29$92.922.35x$125.37$412.3K5.4K2.1K
2022$201.45$80.322.51x$121.13$606.3K7.4K2.1K
2023$208.06$89.082.34x$118.98$1.2M12.6K3.0K

Top Procedures (20)

99309Subsequent nursing facility visit, typically 25 minutes per day
$1.3M
14.8K services$87.23/svc2.25x markup
99308Subsequent nursing facility visit, typically 15 minutes per day
$1.1M
19.4K services$56.21/svc2.67x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$610.1K
6.6K services$92.39/svc2.62x markup
99306Initial nursing facility visit, typically 45 minutes per day
$250.8K
1.8K services$142.57/svc2.50x markup
99215Established patient office or other outpatient, visit typically 40 minutes
$229.5K
1.6K services$145.98/svc2.19x markup
99310Subsequent nursing facility visit, typically 35 minutes per day
$138.1K
1.1K services$123.62/svc2.36x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$118.6K
1.9K services$60.94/svc2.69x markup
99496Transitional care management services, highly complexity, requiring face-to-face visits within 7 days of dischargeโš  3.2x markup
$96.5K
585 services$165.04/svc3.18x markup
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit
$68.5K
491 services$139.45/svc1.85x markup
99497Advance care planning by the physician or other qualified health care professional
$55.0K
765 services$71.91/svc2.67x markup
99233Subsequent hospital inpatient care, typically 35 minutes per day
$52.6K
628 services$83.70/svc2.02x markup
90662Vaccine for influenza for injection into muscle
$48.6K
933 services$52.12/svc1.27x markup
99350Established patient home visit, typically 60 minutes
$41.8K
286 services$146.14/svc2.59x markup
99315Nursing facility discharge day management, 30 minutes or less
$39.2K
655 services$59.87/svc2.61x markup
G0008Administration of influenza virus vaccine
$31.2K
1.1K services$28.09/svc2.21x markup
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month
$22.3K
412 services$54.03/svc1.81x markup
G0506Comprehensive assessment of and care planning for patients requiring chronic care management services (list separately in addition to primary monthly care management service)
$22.2K
381 services$58.39/svc2.14x markup
90670Pneumococcal vaccine for injection into muscle
$22.2K
124 services$178.87/svc1.62x markup
99483Assessment of and care planning for patient with impaired thought processing, typically 50 minutes
$17.9K
81 services$221.20/svc2.50x markup
99205New patient office or other outpatient visit, typically 60 minutes
$16.5K
103 services$159.81/svc2.82x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
99309Subsequent nursing facility visit, typically 25 minutes per day14.8K$1.3M$87.232.25x
99308Subsequent nursing facility visit, typically 15 minutes per day19.4K$1.1M$56.212.67x
99214Established patient office or other outpatient, visit typically 25 minutes6.6K$610.1K$92.392.62x
99306Initial nursing facility visit, typically 45 minutes per day1.8K$250.8K$142.572.50x
99215Established patient office or other outpatient, visit typically 40 minutes1.6K$229.5K$145.982.19x
99310Subsequent nursing facility visit, typically 35 minutes per day1.1K$138.1K$123.622.36x
99213Established patient office or other outpatient visit, typically 15 minutes1.9K$118.6K$60.942.69x
99496Transitional care management services, highly complexity, requiring face-to-face visits within 7 days of discharge585$96.5K$165.043.18x
G0439Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit491$68.5K$139.451.85x
99497Advance care planning by the physician or other qualified health care professional765$55.0K$71.912.67x
99233Subsequent hospital inpatient care, typically 35 minutes per day628$52.6K$83.702.02x
90662Vaccine for influenza for injection into muscle933$48.6K$52.121.27x
99350Established patient home visit, typically 60 minutes286$41.8K$146.142.59x
99315Nursing facility discharge day management, 30 minutes or less655$39.2K$59.872.61x
G0008Administration of influenza virus vaccine1.1K$31.2K$28.092.21x
99490Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month412$22.3K$54.031.81x
G0506Comprehensive assessment of and care planning for patients requiring chronic care management services (list separately in addition to primary monthly care management service)381$22.2K$58.392.14x
90670Pneumococcal vaccine for injection into muscle124$22.2K$178.871.62x
99483Assessment of and care planning for patient with impaired thought processing, typically 50 minutes81$17.9K$221.202.50x
99205New patient office or other outpatient visit, typically 60 minutes103$16.5K$159.812.82x

Markup Analysis

Charge-to-Payment Ratio

2.46x

This provider submits charges 2.46 times higher than what Medicare actually pays.

What This Means

A markup ratio of 2.46x means for every $100 Medicare pays, this provider initially charges $246. This is higher than the national average.

Location

Point Reyes Station, CA

Provider Verification

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

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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.

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