Dr. Gregory Mendez, M.D.

Orthopedic Surgery

59 procedures1 hospitalBaltimore, MDUpdated May 2026

Contact & Location

410-539-2227
Phone: 410-539-2227
Practice phone listed in the NPI registry
301 Saint Paul St
Baltimore, MD 21202
Current practice address per the CMS NPPES registry (self-reported to the registry, last updated July 2022). Registry checked August 2026.
NPI: 1528598331
Credentials: M.D.
Active Medicare provider (NPI verified)
9 years of practice experience
Licensed M.D.
Licensed surgical specialist
Board-certified orthopedic surgeon
Contact information available
Find Practice on Google Maps
National Comparison by Procedure
Hip 31 vs 36 national avg 0.9x
avg
Knee 28 vs 45 national avg 0.6x
avg

Compared with 4,542 hip surgeons and 6,612 knee surgeons in the 2024 Medicare dataset.

Dr. Mendez performs more hip replacement procedures than 48% of orthopedic surgeons in Maryland, based on 2024 Medicare claims volume.Derived from the state ranking shown on this page: #46 of 89 ranked hip surgeons in Maryland.

About Dr. Mendez

Practice. Dr. Gregory Mendez is a board-certified orthopedic surgeon practicing in Baltimore, Maryland. The latest annual CMS data records 31 hip replacements and 28 knee replacements, 59 procedures in all. That is #46 in Maryland for hip replacement. A Medicare provider since 2017.

Trend. Dr. Mendez first appears in the Medicare data in 2024. With 1 year on record, the trend is still short.

National context. Among 4,542 hip replacement surgeons tracked nationally, 31 procedures is near the national average of 36.

Local context. Baltimore has 41 orthopedic surgeons in the current Medicare data. Comparing volume and procedure mix across them is one way to narrow a shortlist.

Verified Medicare Cases

Hip Replacement
31 verified cases
#46 in Maryland
Knee Replacement
28 verified cases
#81 in Maryland
Estimated 2024 total: 190 – 250 procedures (all insurers)
Medicare fee-for-service share of national volume in 2024: 25% to 33% for hip replacement, 23% to 28% for knee replacement
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 25% to 33% for hip replacement, 23% to 28% for knee 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. Mendez Compares

Procedure volume compared to the Maryland state average.

Hip Below Avg
31 Avg: 42
Knee Below Avg
28 Avg: 49
Dr. Mendez Maryland Average

Hospital Affiliations & Quality

H
Mercy Medical Center Inc
4/5
Baltimore, MD
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. Mendez

How does Dr. Mendez's procedure volume compare to other Maryland surgeons?

Dr. Mendez has performed 59 Medicare-verified joint replacement procedures. This is in line with the Maryland average of 71 procedures per surgeon. Dr. Mendez ranks #72 out of 166 orthopedic surgeons in Maryland.

What types of joint replacement does Dr. Mendez perform?

Dr. Mendez's Medicare data shows procedures in hip replacement (31 cases) and knee replacement (28 cases).

Are there other orthopedic surgeons near Dr. Mendez in Baltimore?

Yes. There are 41 orthopedic surgeons in Baltimore 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 Maryland surgeons.

What does the Medicare data for Dr. Mendez 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 25% to 33% for hip replacement, 23% to 28% for knee replacement, which puts Dr. Mendez's total volume across all insurers at roughly 190 to 250 procedures against the 59 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.

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

Yes. Dr. Mendez's Medicare data shows procedures in hip replacement (31 cases), knee replacement (28 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.

Which hospitals is Dr. Mendez affiliated with?

According to CMS facility affiliation data, Dr. Mendez is affiliated with Mercy Medical Center Inc.

How does Dr. Mendez compare to other orthopedic surgeons in Baltimore?

Among the 41 orthopedic surgeons in Baltimore, Dr. Mendez ranks #18 by total Medicare procedure volume. The highest-volume surgeon in Baltimore has 331 verified Medicare procedures.

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

Mercy Medical Center Inc (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 Baltimore, Maryland

Dr. Mendez's 59 Medicare procedures are below the Baltimore average of 169. The table below compares verified procedure volumes for orthopedic surgeons practicing in Baltimore.

SurgeonProceduresSpecialties
Dr. Joseph Ciotola 331 Hip, Knee, Shoulder
Dr. Frank Ebert 190 Hip, Knee
Dr. Marc Hungerford 180 Hip, Knee
Dr. Robert McKinstry 160 Hip, Knee
Dr. Mark Hasenauer 146 Hip, Knee
Dr. Harpal Khanuja 119 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.

Cite This Data

APA: OrthoProcedures. (2026). Dr. Gregory Mendez, M.D. -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/md/dr-gregory-mendez-baltimore.html

Link: https://orthoprocedures.com/surgeons/md/dr-gregory-mendez-baltimore.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.