Dr. Robert Spang, MD

Orthopedic Surgery
13 procedures 2 hospitals Boston, MA
Latest available Medicare data — updated April 2026

Contact & Location

Phone: 617-726-2942
Practice phone listed in the NPI registry
Massachusetts General Hospital
Boston, MA 02114
NPI: 1689011835
Credentials: MD
Active Medicare provider (NPI verified)
13 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 13 vs 45 avg (6,599 surgeons)

Dr. Robert Spang is a board-certified orthopedic surgeon practicing in Boston, Massachusetts. A Medicare provider since 2013, Dr. Spang has performed 13 Medicare-verified knee replacements, ranking #152 in Massachusetts.

In Massachusetts, Dr. Spang performs below average in knee (13 vs 50 avg).

Dr. Spang's Medicare data shows a focused knee replacement practice with 13 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.

Boston is home to 50 orthopedic surgeons in the current Medicare dataset. Patients in the Boston area can compare surgeon volume and procedure specialization to find the right fit for their joint replacement needs.

Dr. Spang's Medicare record spans 3 years from 2020 through 2024. Procedure volume has remained consistent during that period, ranging from 12 to 14 procedures per year, reflecting a steady joint replacement practice.

Dr. Spang's 13 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
13 verified cases
#152 in Massachusetts
Estimated total: 40 – 40 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. Spang Compares

Procedure volume compared to the Massachusetts state average.

Knee Below Avg
13 Avg: 50
Dr. Spang Massachusetts Average

Volume Trend Analysis

Dr. Spang's procedure volume has been consistent across 3 years of Medicare data, ranging from 12 to 14 procedures per year. This stability suggests a well-established joint replacement practice.

Years of Data 3
2024 Volume 13
Peak Volume 14 (2020)
Trend Stable

Hospital Affiliations & Quality

H
Anna Jaques Hospital
3/5
Newburyport, MA
Similar to national avg
H
Beverly Hospital Corporation
3/5
Beverly, MA
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 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. Spang

How does Dr. Spang's procedure volume compare to other Massachusetts surgeons?

Dr. Spang has performed 13 Medicare-verified joint replacement procedures. The Massachusetts average is 74 procedures per surgeon. Medicare data captures roughly one-third of all joint replacements, so total volume may be higher. Dr. Spang ranks #193 out of 203 orthopedic surgeons in Massachusetts.

What types of joint replacement does Dr. Spang perform?

Dr. Spang's reported Medicare volume is focused on knee replacement, with 13 verified procedures. Some surgeons choose to concentrate on a single joint type to build deep procedural expertise.

Are there other orthopedic surgeons near Dr. Spang in Boston?

Yes. There are 50 orthopedic surgeons in Boston 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 Massachusetts surgeons.

What does the Medicare data for Dr. Spang 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. Spang's total practice volume — including private insurance and Medicare Advantage patients — is likely higher than the 13 procedures shown here.

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

Dr. Spang's procedure volume has been relatively stable over 3 years of Medicare data, ranging from 12 to 14 procedures per year between 2020 and 2024. Consistent volume over multiple years reflects a steady joint replacement practice.

Which hospitals is Dr. Spang affiliated with?

According to CMS facility affiliation data, Dr. Spang is affiliated with Anna Jaques Hospital, Beverly Hospital Corporation.

How does Dr. Spang compare to other orthopedic surgeons in Boston?

Among the 50 orthopedic surgeons in Boston, Dr. Spang ranks #48 by total Medicare procedure volume. The highest-volume surgeon in Boston has 305 verified Medicare procedures.

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

Anna Jaques Hospital (3 out of 5 CMS stars, hip/knee complication rate similar to national average); Beverly Hospital Corporation (3 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 Boston, Massachusetts

Dr. Spang's 13 Medicare procedures are below the Boston average of 182. The table below compares verified procedure volumes for orthopedic surgeons practicing in Boston.

SurgeonProceduresSpecialties
Dr. Carl Talmo 305 Hip, Knee
Dr. Young-Min Kwon 235 Hip, Knee
Dr. James Bono 204 Hip, Knee
Dr. Nicholas Pagani 178 Hip, Knee
Dr. Eric Smith 170 Hip, Knee
Dr. Dennis Burke 169 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. Robert Spang, MD -- Orthopedic Surgeon Profile. Retrieved from https://orthoprocedures.com/surgeons/ma/dr-robert-spang-boston.html

Link: https://orthoprocedures.com/surgeons/ma/dr-robert-spang-boston.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.