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Active NPI 1841265501 Individual Practitioner Male Practitioner

Stephen A Mendelson

Orthopaedic Surgery • Pittsburgh, PA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Stephen Mendelson is a certified Orthopaedic Surgery practicing in Pittsburgh, PA. With approximately 37 years of clinical experience since graduating from University Of Chicago, Pritzker School Of Medicine in 1989, Stephen Mendelson delivers high-quality medical care to the local community at 4401 PENN AVE.

Stephen Mendelson is affiliated with University Of Pittsburgh Physicians and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

4401 Penn Ave

Pittsburgh, PA 152241334

Telephone 4126925530
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

University Of Chicago, Pritzker School Of Medicine

Graduation Year

1989

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Orthopaedic Surgery in Pittsburgh, PA

Senior Veteran Specialist (>20 Yrs)
Practitioner Clinical Experience
37 Yrs +16.3 yrs vs City Avg
City Avg: 20.7 Yrs
State Avg: 27.5 Yrs
Regional Practice Density
147 Specialists

Practicing in Pittsburgh, PA (1345 Statewide)

Telehealth Adoption Rate
3.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Mendelson (37 Years) 37 Yrs
Pittsburgh Specialty Average (20.7 Years) 20.7 Yrs

Medical Specialties & State Licenses

CMS Verified: 2026-02-24
Orthopaedic Surgery Primary Specialty

NUCC Taxonomy Code: 207X00000X

State License PA MD059522L

An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.

Orthopaedic Surgery - Orthopaedic Surgery of the Spine

NUCC Taxonomy Code: 207XS0117X

State License PA MD059522L

Recognized by several state medical boards as a fellowship subspecialty program of orthopaedic surgery, orthopaedic surgeons of the spine deal with the evaluation and nonoperative and operative treatment of the full spectrum of primary spinal disorders including trauma, degenerative, deformity, tumor, and reconstructive.

Hospital & Practice Group Affiliations

University Of Pittsburgh Physicians

4401 Penn Ave, Pittsburgh, PA 152241334

Phone: 4126929513

University Of Pittsburgh Physicians

4401 Penn Ave, Pittsburgh, PA 152241334

Phone: 4126927280

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

6 Associated Practitioners
Dr. Mahima Rajan , DO

Student in an Organized Health Care Education/Training Program

NPI 1033964903

Doctor of Osteopathic Medicine (D.O.)

W Ward

Specialist

NPI 1396711461
Allyson Simunic , PA-C

Physician Assistant

NPI 1487258687

Physician Assistant (Certified)

Dr. Bahaureh Mohseni , DO

Pediatrics - Sports Medicine

NPI 1750841284

Doctor of Osteopathic Medicine (D.O.)

Kaylea Deruelle , PA-C

Physician Assistant

NPI 1801556212

Physician Assistant (Certified)

Erica Callahan

Nurse Anesthetist, Certified Registered

NPI 1912080300

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

12 Historical Events
📍
Updated Practice Location February 24, 2026

Registered at 4401 PENN AVE, PITTSBURGH, PA 152241334 (Tel: 4126925530)

📍
Updated Business Mailing Address February 24, 2026

Registered at 4401 PENN AVE, PITTSBURGH, PA 152241334

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) February 24, 2026

Orthopaedic Surgery (License #MD059522L in PA)

📍
Updated Practice Location May 24, 2021

Registered at 3705 5TH AVE, CHP, PEDIATRIC ORTHOPAEDIC SURGERY, PITTSBURGH, PA 152132584 (Tel: 4126925530)

📍
Updated Business Mailing Address May 24, 2021

Registered at 3705 5TH AVE, CHP, PEDIATRIC ORTHOPAEDIC SURGERY, PITTSBURGH, PA 152132584

👤
Provider Name / Credentials Updated May 24, 2021

Recorded as STEPHEN MENDELSON

NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 3705 5TH AVE, CHP, PEDIATRIC ORTHOPAEDIC SURGERY, PITTSBURGH, PA 152132524 (Tel: 4126925530)

📍
Updated Business Mailing Address July 08, 2007

Registered at 3705 5TH AVE, CHP, PEDIATRIC ORTHOPAEDIC SURGERY, PITTSBURGH, PA 152132524 (Tel: 4126925530)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as STEPHEN MENDELSON, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Specialist (License #MD059522L in PA)

🟢
Initial NPI Registration & Enumeration February 17, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1841265501
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 17, 2006
Last Update: February 24, 2026
Sole Proprietor: No

Mailing Address

4401 Penn Ave

Pittsburgh, PA 152241334

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.