Dr. David Johnson, M.D.
Contact & Location
207-283-1126
Biddeford, ME 04005
Dr. Johnson performs more joint replacement procedures than 4% of orthopedic surgeons in Maine, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #41 of 43 orthopedic surgeons in Maine.
About Dr. Johnson
Practice. Dr. David Johnson is a board-certified orthopedic surgeon practicing in Biddeford, Maine. The latest annual CMS data records 13 shoulder replacements. That is #10 in Maine for shoulder replacement. A Medicare provider since 2006.
Trend. Medicare records run from 2013 to 2024, 11 years. Volume peaked at 27 in 2019 and stands at 13 now. Reporting changes and payer mix can both move that number.
National context. Among 2,217 shoulder replacement surgeons tracked nationally, 13 procedures is below the national average of 29. Medicare covers part of all joint replacements, so true volume is likely higher.
Local context. Biddeford has 2 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.
Verified Case Volume Trends (2013-Current)
| Year | Shoulder Replacement |
|---|---|
| 2013 | 14 |
| 2014 | 0 |
| 2015 | 15 |
| 2016 | 21 |
| 2017 | 19 |
| 2018 | 23 |
| 2019 | 27 |
| 2020 | 18 |
| 2021 | 19 |
| 2022 | 20 |
| 2023 | 16 |
| 2024 | 13 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims are one payer stream among several, and the share they represent differs by procedure. In 2024 it was 29% to 37% for shoulder replacement. Each verified count above is divided by its own procedure's range, and the results are added, to estimate total practice volume across all payers. The verified Medicare count is the definitive, audited figure; this is a range derived from published national volume projections, not a measurement, and an individual practice can sit well outside it: how these ranges are derived, and their sources.
How Dr. Johnson Compares
Procedure volume compared to the Maine state average.
Volume Trend Analysis
Dr. Johnson's recorded volume peaked at 27 procedures in 2019 and stood at 13 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.
Hospital Affiliations & Quality
Quality ratings and complication rates are hospital-level metrics from CMS Hospital Compare and do not reflect individual surgeon performance. Star ratings updated quarterly. Complication data covers a rolling 3-year period.
Patient Resources: Preparing for Shoulder Replacement
If you are considering shoulder replacement surgery, these evidence-based guides can help you prepare and recover:
A step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
Home Safety: Creating Your Recovery SanctuaryRoom-by-room modifications, equipment recommendations, and fall-prevention strategies to prepare your home for a safe post-surgical recovery.
Medicare Coverage for Joint ReplacementWhat Medicare Part A and Part B cover for joint replacement surgery, including hospital stays, surgeon fees, anesthesia, and physical therapy.
Shoulder Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after shoulder replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full shoulder replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Johnson
How does Dr. Johnson's procedure volume compare to other Maine surgeons?
Dr. Johnson has performed 13 Medicare-verified joint replacement procedures. The Maine average is 52 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Johnson ranks #41 out of 43 orthopedic surgeons in Maine.
What types of joint replacement does Dr. Johnson perform?
Dr. Johnson's reported Medicare volume is focused on shoulder replacement, with 13 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.
How experienced is Dr. Johnson with shoulder replacement surgery?
Dr. Johnson ranks #10 in Maine for shoulder replacement with 13 Medicare-verified procedures. This high ranking among 43 state surgeons indicates significant experience with this specific procedure.
Are there other orthopedic surgeons near Dr. Johnson in Biddeford?
Yes. There are 2 orthopedic surgeons in Biddeford in the current Medicare dataset. Patients can compare procedure volumes and specializations to choose the surgeon who best fits their needs. Use the state page to view all Maine surgeons.
What does the Medicare data for Dr. Johnson represent?
The procedure counts shown are based on 2024 Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). Medicare fee-for-service is only one payer stream, and the share of national volume it represents differs by procedure. In 2024 the share was 29% to 37% for shoulder replacement, which puts Dr. Johnson's total volume across all insurers at roughly 40 to 40 procedures against the 13 verified here. Those shares are derived from published national volume projections rather than quoted from a single publication, and they are estimates with real uncertainty. The OrthoProcedures methodology page shows the full derivation, the sources, and the limits at orthoprocedures.com/data-methodology.html.
Has Dr. Johnson's procedure volume changed over time?
Dr. Johnson's Medicare-recorded volume peaked at 27 procedures in 2019 and was 13 in the most recent data. Volume fluctuations can reflect changes in payer mix, practice focus, or Medicare reporting rather than a change in overall surgical activity.
Which hospitals is Dr. Johnson affiliated with?
According to CMS facility affiliation data, Dr. Johnson is affiliated with Mainehealth Maine Medical Center.
What are the quality ratings for hospitals where Dr. Johnson practices?
Mainehealth Maine Medical Center (4 out of 5 CMS stars, hip/knee complication rate similar to national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Biddeford, Maine
Dr. Johnson's 13 Medicare procedures are below the Biddeford average of 41. The table below compares verified procedure volumes for orthopedic surgeons practicing in Biddeford.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Jeffrey Bush | 69 | Hip, Knee |
Patient Resources & Verification
Research reviews, verify credentials, and check official quality data through these trusted sources:
Medicare Care Compare and NPI Registry are official U.S. government sources. Google reviews reflect user-submitted feedback. OrthoProcedures.com does not verify the accuracy of third-party review content.