Dr. Allen Hershey, MD

Orthopedic Surgery
34 procedures 2 hospitals Salinas, CA
Latest available Medicare data — updated April 2026
Growing Volume

Contact & Location

Phone: 831-757-3041
Practice phone listed in the NPI registry
611 Abbott St Ste 101
Salinas, CA 93901
NPI: 1487682845
Credentials: MD
Active Medicare provider (NPI verified)
20 years of practice experience
Licensed MD
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps
Knee replacement recovery kit Ice machines, mobility aids, bathroom safety, all under $50
National Comparison by Procedure
Knee 34 vs 45 avg (6,599 surgeons)

Dr. Allen Hershey is a board-certified orthopedic surgeon practicing in Salinas, California. A Medicare provider since 2006, Dr. Hershey has performed 34 Medicare-verified knee replacements, ranking #224 in California.

In California, Dr. Hershey performs below average in knee (34 vs 47 avg).

Dr. Hershey's Medicare data shows a focused knee replacement practice with 34 verified procedures. Surgeons who concentrate on a single procedure type often develop deep procedural expertise, though total practice volume may include additional procedures not captured in Medicare fee-for-service data.

Salinas is home to 5 orthopedic surgeons in the current Medicare dataset. Patients in the Salinas area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.

Medicare records for Dr. Hershey extend back to 2015, covering 10 years of data. Over that period, recorded procedure volume increased from 28 to 34 in the most recent data, a 21% increase. This sustained growth reflects an expanding joint replacement practice.

Dr. Hershey's 34 knee replacement procedures is below the national average of 45 among 6,599 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.

Verified Medicare Cases

Knee Replacement
34 verified cases
#224 in California
Estimated total: 90 – 100 procedures (all insurers)
Based on Medicare FFS representing 33–37% of national joint replacement volume
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. Hershey Compares

Procedure volume compared to the California state average.

Knee Below Avg
34 Avg: 47
Dr. Hershey California Average

Volume Trend Analysis

Dr. Hershey's Medicare-recorded procedure volume has trended upward over 10 years, increasing 21% from 28 procedures in 2015 to 34 in the most recent data.

Years of Data 10
2024 Volume 34
Peak Volume 40 (2018)
Trend Growing

Hospital Affiliations & Quality

H
Community Hospital Of The Monterey Peninsula
3/5
Monterey, CA
Similar to national avg
H
Salinas Valley Memorial Hospital
4/5
Salinas, CA
Low case volume

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 Knee Replacement

If you are considering knee replacement surgery, these evidence-based guides can help you prepare and recover:

Knee Replacement Recovery Overview

Recovery timelines vary by patient, but here is a general overview of what to expect after knee replacement surgery:

Week 1-2 Walking with assistive device. Knee bending exercises begin immediately. Ice therapy and elevation for swelling control.
Week 3-6 Increased range of motion (target 90 degrees). Walking longer distances. Physical therapy intensifies with strengthening exercises.
Week 7-12 Most patients walk without assistive devices. Resume driving and desk work. Continue PT for strength and flexibility.
Month 4-6 Near-full recovery. Resume most recreational activities. Some swelling and stiffness may persist but continues improving.

Individual recovery varies based on overall health, age, and adherence to physical therapy. View full knee replacement recovery guide and product recommendations

Frequently Asked Questions About Dr. Hershey

How does Dr. Hershey's procedure volume compare to other California surgeons?

Dr. Hershey has performed 34 Medicare-verified joint replacement procedures. The California average is 68 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Hershey ranks #370 out of 613 orthopedic surgeons in California.

What types of joint replacement does Dr. Hershey perform?

Dr. Hershey's reported Medicare volume is focused on knee replacement, with 34 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.

Are there other orthopedic surgeons near Dr. Hershey in Salinas?

Yes. There are 5 orthopedic surgeons in Salinas 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 California surgeons.

What does the Medicare data for Dr. Hershey 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. Hershey's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 34 procedures shown here.

Has Dr. Hershey's procedure volume changed over time?

Yes. Dr. Hershey's Medicare-recorded volume has increased from 28 procedures in 2015 to 34 in the most recent data, a 21% increase over 10 years. This upward trend suggests an expanding joint replacement practice. Peak volume was 40 procedures in 2018.

Which hospitals is Dr. Hershey affiliated with?

According to CMS facility affiliation data, Dr. Hershey is affiliated with Community Hospital Of The Monterey Peninsula, Salinas Valley Memorial Hospital.

How does Dr. Hershey compare to other orthopedic surgeons in Salinas?

Among the 5 orthopedic surgeons in Salinas, Dr. Hershey ranks #4 by total Medicare procedure volume. The highest-volume surgeon in Salinas has 108 verified Medicare procedures.

What are the quality ratings for hospitals where Dr. Hershey practices?

Community Hospital Of The Monterey Peninsula (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Salinas Valley Memorial Hospital (4 out of 5 CMS stars, insufficient case volume for complication rate comparison). These are hospital-level quality metrics from CMS Hospital Compare and do not reflect individual surgeon outcomes.

Other Orthopedic Surgeons in Salinas, California

Dr. Hershey's 34 Medicare procedures are below the Salinas average of 58. The table below compares verified procedure volumes for orthopedic surgeons practicing in Salinas.

SurgeonProceduresSpecialties
Dr. Stephen Gregorius 108 Hip, Knee
Dr. Bert Tardieu 70 Hip, Knee, Shoulder
Dr. John Bonano 65 Hip, Knee
Dr. Kartheek Reddy 15 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.

Cite This Data

APA: OrthoProcedures. (2026). Dr. Allen Hershey, MD -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/ca/dr-allen-hershey-salinas.html

Link: https://orthoprocedures.com/surgeons/ca/dr-allen-hershey-salinas.html

Data source: CMS Medicare Part B Provider Utilization & Payment Data. Full methodology | Open Data API

Important: Rankings are based solely on Medicare procedure volume and do not reflect quality of care, patient outcomes, or procedures covered by private insurance. This data represents approximately one-third to 40% of all joint replacement procedures nationwide. Always consult with healthcare providers to make informed decisions about your care.