#162 Knee
#199 Hip

Dr. Robert Grob, D.O.

Orthopedic Surgery
45 procedures 4 hospitals Lehighton, PA
Latest available Medicare data — updated April 2026
Knee replacement recovery kit Ice machines, mobility aids, bathroom safety — under $50 essentials
National Comparison by Procedure
Hip 13 vs 36 avg (4,526 surgeons)
Knee 32 vs 45 avg (6,720 surgeons)

Dr. Robert Grob is a board-certified orthopedic surgeon practicing in Lehighton, Pennsylvania. Dr. Grob has performed 32 Medicare-verified knee replacements (#162 in Pennsylvania) and 13 hip replacements, for a combined total of 45 procedures.

In Pennsylvania, Dr. Grob performs below average in knee (32 vs 45 avg), below average in hip (13 vs 34 avg).

Dr. Grob's reported Medicare volume is split between knee replacements (32 cases) and hip replacements (13 cases).

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

Dr. Grob's Medicare data spans 11 years, beginning in 2013. Volume peaked at 63 procedures in 2014 before settling at 45 in the most recent data. Changes in Medicare reporting, payer mix shifts, or practice focus adjustments can all influence year-to-year volume.

Dr. Grob's 32 knee replacement procedures is below the national average of 45 among 6,720 surgeons. Medicare data captures roughly a third of all joint replacements, so actual volume is likely higher.

Verified Medicare Cases

Knee Replacement
32 verified cases
#162 in Pennsylvania
Hip Replacement
13 verified cases
#199 in Pennsylvania
Estimated total: 120 – 140 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. Grob Compares

Procedure volume compared to the Pennsylvania state average.

Hip Below Avg
13 Avg: 34
Knee Below Avg
32 Avg: 45
Dr. Grob Pennsylvania Average

Contact & Location

246 N 6th St
Lehighton, PA 18235
NPI: 1427055755
Credentials: D.O.
Active Medicare provider
Find Practice on Google Maps

Volume Trend Analysis

Dr. Grob's recorded volume peaked at 63 procedures in 2014 and stood at 45 in the most recent data. Year-to-year variation can reflect changes in payer mix, practice scope, or Medicare billing patterns.

Years of Data 11
2023 Volume 45
Peak Volume 63 (2014)
Trend Declining

Hospital Affiliations & Quality

H
St Luke'S Miners Memorial Hospital
★★★★☆
Coaldale, PA
Low case volume
H
St Luke'S Hospital - Carbon Campus
★★★★☆
Lehighton, PA
Similar to national avg
H
St Luke'S Hospital Bethlehem
★★★★★
Bethlehem, PA
Similar to national avg
H
St Luke'S Hospital - Monroe Campus
★★★★☆
Stroudsburg, PA
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.

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. Grob

How does Dr. Grob's procedure volume compare to other Pennsylvania surgeons?

Dr. Grob has performed 45 Medicare-verified joint replacement procedures. The Pennsylvania average is 63 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Grob ranks #191 out of 388 orthopedic surgeons in Pennsylvania.

What types of joint replacement does Dr. Grob perform?

Dr. Grob's Medicare data shows procedures in knee replacement (32 cases) and hip replacement (13 cases).

Where is Dr. Grob's practice located?

Dr. Grob practices in Lehighton, Pennsylvania. The office is located at 246 N 6th St, Lehighton, PA 18235. Patients in the surrounding area can consult Dr. Grob for joint replacement evaluation.

What does the Medicare data for Dr. Grob 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. Grob's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 45 procedures shown here.

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

Dr. Grob's Medicare-recorded volume peaked at 63 procedures in 2014 and was 45 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. Grob perform more than one type of joint replacement?

Yes. Dr. Grob's Medicare data shows procedures in knee replacement (32 cases), hip replacement (13 cases). Surgeons who perform multiple joint replacement types maintain broad technical skills across different anatomical joints.

Which hospitals is Dr. Grob affiliated with?

According to CMS facility affiliation data, Dr. Grob is affiliated with St Luke'S Miners Memorial Hospital, St Luke'S Hospital - Carbon Campus, St Luke'S Hospital Bethlehem, St Luke'S Hospital - Monroe Campus.

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

St Luke'S Miners Memorial Hospital (4 out of 5 CMS stars, insufficient case volume for complication rate comparison); St Luke'S Hospital - Carbon Campus (4 out of 5 CMS stars, hip/knee complication rate similar to national average); St Luke'S Hospital Bethlehem (5 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 Reviews & Ratings

OrthoProcedures.com focuses on verified Medicare procedure data. For patient reviews, ratings, and appointment scheduling, visit these trusted platforms:

These links lead to third-party websites. OrthoProcedures.com is not affiliated with these platforms and cannot verify the accuracy of reviews.

Cite This Data

APA: OrthoProcedures. (2026). Dr. Robert Grob, D.O. -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/pa/dr-robert-grob-lehighton.html

Link: https://orthoprocedures.com/surgeons/pa/dr-robert-grob-lehighton.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.