Dr. Douglas Hartzler, MD
Contact & Location
602-648-5444
Phoenix, AZ 85018
About Dr. Hartzler
Dr. Douglas Hartzler is a board-certified orthopedic surgeon practicing in Phoenix, Arizona. A Medicare provider since 2005, Dr. Hartzler completed 27 hip replacements (#66 in Arizona), 25 knee replacements, and 13 shoulder replacements in the latest annual CMS data, totaling 65 Medicare-verified procedures.
In Arizona, Dr. Hartzler performs below the state average in hip (27 vs 40), below the state average in knee (25 vs 49), below the state average in shoulder (13 vs 31).
Dr. Hartzler performs all three major joint replacement procedures — hip, knee, and shoulder — indicating a broad scope of orthopedic practice. The largest share is hip replacements (27 cases), followed by knee replacements (25) and shoulder replacements (13).
Phoenix is home to 51 orthopedic surgeons in the current Medicare dataset. Patients in the Phoenix area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.
Medicare records for Dr. Hartzler extend back to 2014, covering 11 years of data. Over that period, recorded procedure volume increased from 13 to 65 in the most recent data, a 400% increase. This sustained growth reflects an expanding joint replacement practice.
Dr. Hartzler's 27 hip replacement procedures is below the national average of 36 among 4,532 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.
Verified Case Volume Trends (2013-Current)
| Year | Hip Replacement | Knee Replacement | Shoulder Replacement |
|---|---|---|---|
| 2013 | 0 | 0 | 0 |
| 2014 | 13 | 0 | 0 |
| 2015 | 0 | 16 | 0 |
| 2016 | 14 | 12 | 0 |
| 2017 | 17 | 22 | 0 |
| 2018 | 12 | 18 | 0 |
| 2019 | 23 | 23 | 0 |
| 2020 | 17 | 22 | 0 |
| 2021 | 36 | 30 | 0 |
| 2022 | 32 | 30 | 12 |
| 2023 | 23 | 27 | 0 |
| 2024 | 27 | 25 | 13 |
Verified Medicare Cases
How is this estimated?
Medicare Part B fee-for-service claims represent approximately 33–37% of all joint replacements performed nationally (source: CMS data, AJRR). This range estimates the surgeon's total practice volume across all payers. The verified Medicare count above is the definitive, audited figure.
How Dr. Hartzler Compares
Procedure volume compared to the Arizona state average.
Volume Trend Analysis
Dr. Hartzler's Medicare-recorded procedure volume has trended upward over 11 years, increasing 400% from 13 procedures in 2014 to 65 in the most recent data.
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 Hip Replacement
If you are considering hip replacement surgery, these evidence-based guides can help you prepare and recover:
Understanding the progression from conservative treatments to surgical intervention, and how to determine when hip replacement becomes the right choice.
What to Expect on the Day of SurgeryA step-by-step walkthrough of your surgical day, from pre-op preparation through anesthesia, the procedure itself, and the first hours of recovery.
Nutrition and Recovery After Joint ReplacementHow protein intake, anti-inflammatory foods, hydration, and targeted supplements support bone healing and tissue repair after surgery.
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.
Hip Replacement Recovery Overview
Recovery timelines vary by patient, but here is a general overview of what to expect after hip replacement surgery:
Individual recovery varies based on overall health, age, and adherence to physical therapy. View full hip replacement recovery guide and product recommendations
Frequently Asked Questions About Dr. Hartzler
How does Dr. Hartzler's procedure volume compare to other Arizona surgeons?
Dr. Hartzler has performed 65 Medicare-verified joint replacement procedures. This is in line with the Arizona average of 72 procedures per surgeon. Dr. Hartzler ranks #80 out of 191 orthopedic surgeons in Arizona.
What types of joint replacement does Dr. Hartzler perform?
Dr. Hartzler performs all three major joint replacement procedures: hip replacement (27 cases), knee replacement (25 cases), shoulder replacement (13 cases). This breadth indicates a comprehensive orthopedic joint replacement practice.
Are there other orthopedic surgeons near Dr. Hartzler in Phoenix?
Yes. There are 51 orthopedic surgeons in Phoenix 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 Arizona surgeons.
What does the Medicare data for Dr. Hartzler represent?
The procedure counts shown are based on the most recent Medicare Part B fee-for-service claims data, published by the Centers for Medicare and Medicaid Services (CMS). This captures approximately 33–37% of all joint replacements performed nationally. Dr. Hartzler's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 65 procedures shown here.
Has Dr. Hartzler's procedure volume changed over time?
Yes. Dr. Hartzler's Medicare-recorded volume has increased from 13 procedures in 2014 to 65 in the most recent data, a 400% increase over 11 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 74 procedures in 2022.
Does Dr. Hartzler perform more than one type of joint replacement?
Yes. Dr. Hartzler's Medicare data shows procedures in hip replacement (27 cases), knee replacement (25 cases), shoulder replacement (13 cases). Performing all three major joint replacements places Dr. Hartzler among the 5% of orthopedic surgeons nationally who cover hip, knee, and shoulder arthroplasty.
Which hospitals is Dr. Hartzler affiliated with?
According to CMS facility affiliation data, Dr. Hartzler is affiliated with Arizona Specialty Hospital.
How does Dr. Hartzler compare to other orthopedic surgeons in Phoenix?
Among the 51 orthopedic surgeons in Phoenix, Dr. Hartzler ranks #21 by total Medicare procedure volume. The highest-volume surgeon in Phoenix has 234 verified Medicare procedures.
What are the quality ratings for hospitals where Dr. Hartzler practices?
Arizona Specialty Hospital (hip/knee complication rate above national average). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.
Other Orthopedic Surgeons in Phoenix, Arizona
Dr. Hartzler's 65 Medicare procedures are below the Phoenix average of 144. The table below compares verified procedure volumes for orthopedic surgeons practicing in Phoenix.
| Surgeon | Procedures | Specialties |
|---|---|---|
| Dr. Steven Werner | 234 | Hip, Knee |
| Dr. Christina Khoury | 152 | Hip, Knee |
| Dr. Steven Hattrup | 147 | Shoulder |
| Dr. Michael Wilmink | 144 | Hip, Knee |
| Dr. Kenneth Schmidt | 135 | Hip, Knee |
| Dr. Lige Kaplan | 128 | 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.