North Chelmsford - Orthopaedic Surgical Associates

Orthopaedic Surgical Associates & Merrimack Valley Spine Center (“OSA”) were recently notified of a data breach impacting a third-party vendor, ConnectOnCall. OSA takes the protection of patient information seriously. Following notification of this incident, OSA terminated the partnership with ConnectOnCall. Patients will receive notification letters of the incident directly from ConnectOnCall. Patients may contact ConnectOnCall and learn more about the incident from the notification letter, or at the following web address: https://www.phreesia.com/security-incident/

North Chelmsford

North Chelmsford 14 Research Place
North Chelmsford, MA 01863 Directions

Services

X-ray, Ultrasound Guided Injections, and Workers' Compensation

(978) 454-0706Online Scheduling

Physician Offices

Monday – Friday | 8:00 am – 5:00 pm

MRI

Monday – Friday | 7:00 am – 10:00 pm

Saturday | 7:00 am – 3:00 pm

Physicians & Staff

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Steven Alter, MD

Hand and Upper Extremity

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

Atul Bhat, MD

Physiatry
Spine

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

Steven T. DiSegna, MD

Hip and Knee Replacement

Practicing in:

North Chelmsford and Westford

(978) 454-0706Online Scheduling

Elisabeth R. Gennis, MD

Hand and Upper Extremity

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

Samuel D. Gerber, MD

Sports Medicine
Hip and Knee Replacement

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

Eric Holstein, MD

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

Mark A. Lapp, MD

Spine

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

Jeremy M. Moses, MD

Sports Medicine

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

David J. Prybyla, MD

Hip and Knee Replacement

Practicing in:

North Chelmsford and Westford

(978) 454-0706Online Scheduling

Scott A. Sigman, MD

Sports Medicine

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

Howard Wu, MD

Sports Medicine
Hip and Knee Replacement

Practicing in:

North Chelmsford

(978) 454-0706Online Scheduling

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Allison Devine, PA-CPhysician Assistant

Practicing in:

North Chelmsford

Roderick Mao, PA-CPhysician Assistant

Practicing in:

North Chelmsford

Gregory Sergeant, PA-CPhysician Assistant

Practicing in:

North Chelmsford

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Alexis Beauchesne, FNP-CNurse Practitioner

Practicing in:

North Chelmsford

Roula Johnstone, ACNPNurse Practitioner

Practicing in:

North Chelmsford

Jessica Karl, ACNPNurse Practitioner

Practicing in:

North Chelmsford

Stacey Murphy, FNP-CNurse Practitioner

Practicing in:

North Chelmsford

Kristen Proverb, NP-CNurse Practitioner

Practicing in:

North Chelmsford and Westford

June Stott, ACNPNurse Practitioner

Practicing in:

North Chelmsford