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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.
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. Michael Heffernan
๐Ÿงด
MDIndividual

Michael Heffernan, MD

NPI: 1518923432
San Luis Obispo, CA
10 years of data
Dermatology
$11.2M
Total Payments
99.7K
Beneficiaries
135.1K
Services
1.52x
Markup Ratio

Peer Comparison

99th
percentile in specialty
This provider$11.2M
Specialty median$212.7K

๐Ÿ“‹ Key Findings

1Billed $11.2M over 10 years
21.52x markup ratio
399th percentile in Dermatology by payments
454 services/day โ€” unusually high
5Payments surged 346% in 2015

This provider averages 54 services per working day

Based on 135.1K total services over 10 years (250 working days/year). Learn about impossible service volumes โ†’

๐Ÿ”Ž Data Analysis

This provider's $11.2M in total Medicare payments ranks in the 99th percentile of Dermatology providers nationally.

Averaging 54 services per working day raises questions about billing patterns.

Medicare payments to this provider grew 489% 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 346% in 2015

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$189.52$125.151.51x$64.37$235.3K3.7K3.4K
2015$225.69$141.201.60x$84.49$1.0M13.5K9.5K
2016$232.54$146.211.59x$86.33$1.2M15.0K10.8K
2017$221.37$140.531.58x$80.84$1.1M15.5K11.2K
2018$240.51$158.431.52x$82.08$1.1M15.2K10.9K
2019$245.73$161.551.52x$84.18$1.2M14.4K10.5K
2020$244.00$161.801.51x$82.20$1.2M14.2K10.7K
2021$251.21$172.701.45x$78.51$1.3M14.2K10.8K
2022$230.85$152.731.51x$78.12$1.3M14.2K10.7K
2023$227.90$149.251.53x$78.65$1.4M15.3K11.4K

Top Procedures (20)

17311Removal and microscopic examination of growth of the head, neck, hands, feet, or genitals (first stage, up to 5 tissue blocks)
$1.9M
3.6K services$513.37/svc1.39x markup
99213Established patient office or other outpatient visit, typically 15 minutes
$1.2M
22.6K services$54.15/svc1.49x markup
17110Destruction of up to 14 skin growths
$1.2M
13.7K services$85.61/svc1.42x markup
17312Removal and microscopic examination of growth of the head, neck, hands, feet, or genitals
$963.5K
2.8K services$338.19/svc1.26x markup
17000Destruction of skin growth
$847.7K
23.4K services$36.17/svc1.97x markup
99214Established patient office or other outpatient, visit typically 25 minutes
$627.3K
7.0K services$90.00/svc1.45x markup
17313Removal and microscopic examination of growth of the trunk, arms, or legs (first stage, up to 5 tissue blocks)
$454.2K
922 services$492.59/svc1.37x markup
13132Repair of wound (2.6 to 7.5 centimeters) of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, and/or feet
$436.1K
2.1K services$209.05/svc2.44x markup
88305Pathology examination of tissue using a microscope, intermediate complexity
$351.7K
11.2K services$31.50/svc1.28x markup
J7308Aminolevulinic acid hcl for topical administration, 20%, single unit dosage form (354 mg)
$310.9K
1.2K services$254.40/svc1.28x markup
12032Repair of wound (2.6 to 7.5 centimeters) of the scalp, underarms, trunk, arms, and/or legs
$277.4K
1.1K services$241.64/svc1.36x markup
13121Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs
$256.6K
1.2K services$214.03/svc2.15x markup
11100Biopsy of single growth of skin and/or tissue
$253.6K
3.7K services$69.47/svc1.59x markup
99203New patient office or other outpatient visit, typically 30 minutes
$223.9K
3.1K services$72.01/svc1.58x markup
17004Destruction of 15 or more skin growths
$216.8K
1.7K services$124.58/svc1.33x markup
11102Tangential biopsy of single skin lesion
$208.5K
3.3K services$62.66/svc1.76x markup
17314Removal and microscopic examination of growth of the trunk, arms, or legs
$189.4K
577 services$328.18/svc1.26x markup
14061Tissue transfer repair of wound (10.1 to 30.0 sq centimeters) of eyelids, nose, ears, and/or lips
$172.2K
206 services$835.74/svc1.27x markup
11603Removal of malignant growth (2.1 to 3.0 centimeters) of the trunk, arms, or legs
$126.4K
1.1K services$119.57/svc2.52x markup
96567Application of light to aid destruction of premalignant and/or malignant skin growths, each session
$102.7K
987 services$104.01/svc1.42x markup
Show detailed table โ–พ
CodeDescriptionServicesPaymentsAvg/ServiceMarkup
17311Removal and microscopic examination of growth of the head, neck, hands, feet, or genitals (first stage, up to 5 tissue blocks)3.6K$1.9M$513.371.39x
99213Established patient office or other outpatient visit, typically 15 minutes22.6K$1.2M$54.151.49x
17110Destruction of up to 14 skin growths13.7K$1.2M$85.611.42x
17312Removal and microscopic examination of growth of the head, neck, hands, feet, or genitals2.8K$963.5K$338.191.26x
17000Destruction of skin growth23.4K$847.7K$36.171.97x
99214Established patient office or other outpatient, visit typically 25 minutes7.0K$627.3K$90.001.45x
17313Removal and microscopic examination of growth of the trunk, arms, or legs (first stage, up to 5 tissue blocks)922$454.2K$492.591.37x
13132Repair of wound (2.6 to 7.5 centimeters) of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, and/or feet2.1K$436.1K$209.052.44x
88305Pathology examination of tissue using a microscope, intermediate complexity11.2K$351.7K$31.501.28x
J7308Aminolevulinic acid hcl for topical administration, 20%, single unit dosage form (354 mg)1.2K$310.9K$254.401.28x
12032Repair of wound (2.6 to 7.5 centimeters) of the scalp, underarms, trunk, arms, and/or legs1.1K$277.4K$241.641.36x
13121Repair of wound (2.6 to 7.5 centimeters) of scalp, arms, and/or legs1.2K$256.6K$214.032.15x
11100Biopsy of single growth of skin and/or tissue3.7K$253.6K$69.471.59x
99203New patient office or other outpatient visit, typically 30 minutes3.1K$223.9K$72.011.58x
17004Destruction of 15 or more skin growths1.7K$216.8K$124.581.33x
11102Tangential biopsy of single skin lesion3.3K$208.5K$62.661.76x
17314Removal and microscopic examination of growth of the trunk, arms, or legs577$189.4K$328.181.26x
14061Tissue transfer repair of wound (10.1 to 30.0 sq centimeters) of eyelids, nose, ears, and/or lips206$172.2K$835.741.27x
11603Removal of malignant growth (2.1 to 3.0 centimeters) of the trunk, arms, or legs1.1K$126.4K$119.572.52x
96567Application of light to aid destruction of premalignant and/or malignant skin growths, each session987$102.7K$104.011.42x

Markup Analysis

Charge-to-Payment Ratio

1.52x

This provider submits charges 1.52 times higher than what Medicare actually pays.

What This Means

A markup ratio of 1.52x means for every $100 Medicare pays, this provider initially charges $152. This is lower than the national average.

Location

San Luis Obispo, 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 Dermatology providers in CA for peer comparison.

Michael Heffernan (you)
$11.2M
Artur Henke, MD
$35.6M
Show detailed table โ–พ
ProviderLocationTotal PaymentsStatus
Artur Henke, MDRoseville, CA$35.6Mโœ“ 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.

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