Dr. Gregory May, M.D.

Orthopedic Surgery
30 procedures 1 hospital Aberdeen, WA
Latest available Medicare data — updated April 2026

Contact & Location

Phone: 360-532-3808
Practice phone listed in the NPI registry
1211 Skyview Dr
Aberdeen, WA 98520
NPI: 1265401533
Credentials: M.D.
Active Medicare provider (NPI verified)
20 years of practice experience
Licensed M.D.
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps
Hip replacement recovery kit Essentials every patient wishes they bought first
National Comparison by Procedure
Hip 15 vs 36 avg (4,532 surgeons)
Knee 15 vs 45 avg (6,599 surgeons)

Dr. Gregory May is a board-certified orthopedic surgeon practicing in Aberdeen, Washington. A Medicare provider since 2006, Dr. May has performed 15 Medicare-verified knee replacements (#123 in Washington) and 15 hip replacements, for a combined total of 30 procedures.

In Washington, Dr. May performs below average in knee (15 vs 41 avg), below average in hip (15 vs 38 avg).

Dr. May's reported Medicare volume is split between knee replacements (15 cases) and hip replacements (15 cases).

Dr. May is the only orthopedic surgeon in Aberdeen represented in the current Medicare dataset, serving as the primary local option for patients considering joint replacement surgery in the area.

Dr. May's Medicare data spans 12 years, beginning in 2013. Volume peaked at 68 procedures in 2013 before settling at 30 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.

Dr. May's 15 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 Medicare Cases

Hip Replacement
15 verified cases
#98 in Washington
Knee Replacement
15 verified cases
#123 in Washington
Estimated total: 80 – 90 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. May Compares

Procedure volume compared to the Washington state average.

Hip Below Avg
15 Avg: 38
Knee Below Avg
15 Avg: 41
Dr. May Washington Average

Volume Trend Analysis

Dr. May's recorded volume peaked at 68 procedures in 2013 and stood at 30 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.

Years of Data 12
2024 Volume 30
Peak Volume 68 (2013)
Trend Declining

Hospital Affiliations & Quality

H
Grays Harbor Community Hospital
2/5
Aberdeen, WA
Similar to national avg

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:

Hip Replacement Recovery Overview

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

Week 1-2 Walking with assistive device (walker or cane). Gentle range-of-motion exercises begin. Most patients can manage basic self-care.
Week 3-6 Transition to walking independently. Resume driving short distances. Physical therapy focuses on strength and balance.
Week 7-12 Return to most daily activities and light exercise. Stair climbing improves. Many patients return to desk work.
Month 4-6 Full recovery for most patients. Resume recreational activities, golf, swimming, and low-impact exercise.

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. May

How does Dr. May's procedure volume compare to other Washington surgeons?

Dr. May has performed 30 Medicare-verified joint replacement procedures. The Washington average is 59 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. May ranks #135 out of 198 orthopedic surgeons in Washington.

What types of joint replacement does Dr. May perform?

Dr. May's Medicare data shows procedures in knee replacement (15 cases) and hip replacement (15 cases).

Where is Dr. May's practice located?

Dr. May practices in Aberdeen, Washington. The office is located at 1211 Skyview Dr, Aberdeen, WA 98520. Patients in the surrounding area can consult Dr. May for joint replacement evaluation.

What does the Medicare data for Dr. May 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. May's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 30 procedures shown here.

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

Dr. May's Medicare-recorded volume peaked at 68 procedures in 2013 and was 30 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.

Does Dr. May perform more than one type of joint replacement?

Yes. Dr. May's Medicare data shows procedures in knee replacement (15 cases), hip replacement (15 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.

Which hospitals is Dr. May affiliated with?

According to CMS facility affiliation data, Dr. May is affiliated with Grays Harbor Community Hospital.

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

Grays Harbor Community Hospital (2 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.

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. Gregory May, M.D. -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/wa/dr-gregory-may-aberdeen.html

Link: https://orthoprocedures.com/surgeons/wa/dr-gregory-may-aberdeen.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.