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WellSpan General Surgery

WellSpan General Surgery - Lancaster County

WellSpan General Surgery
804 Grandview Dr.
Ephrata, PA 17522
(717) 733-4644

Map & Driving Directions

Monday - Friday 8:30 am - 4:30 pm
Saturday - Sunday Closed

Formerly known as Keyser & O'Connor Surgical Associates. To access our patient portal, please go to:

www.WellSpan.org/KOSAportal


WellSpan General Surgery
Ephrata Health Pavilion
175 Martin Ave., Suite 350
Ephrata, PA 17522-1763
(717) 733-2055
(717) 738-4114 Fax

Map & Driving Directions

Monday - Thursday 8 am - 5 pm
Friday 8 am - 4 pm
Saturday - Sunday Closed

Formerly Heritage Surgical Associates

WellSpan General Surgery

  • Meet Our Providers
    Jeffrey Keyser, DO

    Jeffrey Keyser, DO

    Practice Name: WellSpan General Surgery
    Primary Specialty: General Surgery


    Thomas O'Connor, DO

    Thomas O'Connor, DO

    Practice Name: WellSpan General Surgery
    Primary Specialty: General Surgery


    William Piepgrass, MD

    William Piepgrass, MD

    Practice Name: WellSpan General Surgery
    Primary Specialty: General Surgery


    Matthew Souder, MD

    Matthew Souder, MD

    Practice Name: WellSpan General Surgery
    Primary Specialty: General Surgery



WellSpan Cardiology Portal (Keyser & O''Connor)Services We Provide

General Surgery

  • Laparoscopic colon and gallbladder procedures
  • Laparoscopic hernia surgery
  • Thyroid and parathyroid surgery
  • Anorectal procedures
  • Thoracic surgery
  • Lung cancer surgery
  • Video-assisted thoracic surgery (VATS)

Vascular Surgery*

  • Aortic aneurysm repair (open and stent graft techniques)
  • Treatment of lower extremity claudication and rest pain arteriography, angioplasty and stenting
  • Carotid surgery
  • Dialysis surgery
  • Treatment of varicose veins

* Note that vascular surgery is performed at the Grandview Drive (Ephrata) and Highlands Drive (Lititz) locations.


Make an Appointment

Call our office during regular business hours. See details above in our list of office hours.

Request a Prescription Refill

Prescription refills should be addressed during your routine office visit.  If you need a written prescription before your next scheduled visit, please call the office during regular business hours 24-48 hours before you need it.

Health Questions

Please contact our office during regular business hours for general health and non-urgent questions.

After-hour Emergencies

We answer our phone 24-hours-a-day for emergencies. If you are experiencing a life-threatening condition, dial 911 or go to the closest emergency department immediately.


Prepare for Your  Appointment:

Our physicians and staff strive to partner with you and your family to achieve the best health care possible. To help us serve you and other patients better, please:

  • Give us as much notice as possible if you are unable to keep a scheduled appointment so we may offer that time to another patient.
  • Call as early as possible if you have an immediate need to be seen due to illness or injury.
  • Be prepared to give our receptionist complete information when you call, including the reason(s) for your visit. This will allow us to schedule the appropriate amount of time to address your needs.
  • Bring all medication in their original containers with you each visit so we can verify them and provide you with appropriate refills. Please note that we will not prescribe any new medicines by telephone.

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About the provider search

This search will provide you with WellSpan Medical Group and Northern Lancaster County (Ephrata) Medical Group primary care physicians and specialists. If we don’t have a WellSpan Medical Group physician to meet your criteria, the search will expand to include community physicians who partner with WellSpan Medical Group physicians through the WellSpan Provider Network or provide care to patients on the Medical Staffs of WellSpan’s Hospitals.

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Schedule Your Next Appointment Online with MyWellSpan

Use your MyWellSpan patient portal any time to view available appointments, and pick the date and time that best suits your schedule.

Go to MyWellSpan

New to this practice?

If you don't have a WellSpan primary care provider and would like to schedule a new patient appointment with a provider who is accepting patients, just log into your MyWellSpan account, and go to the Appointment Center section. As you progress through the scheduling process, you will be able to see the offices that are accepting new patients in relation to your zip code. If you are not enrolled in MyWellSpan, go to https://my.wellspan.org, call 1-866-638-1842 or speak with a member of the staff at a participating facility to sign up. New patient scheduling not available at all practices/programs.

Already a patient at this practice?

If you already have a relationship with a WellSpan practice, simply log into your account, and go to the Appointment Center section. As you progress through the scheduling process, you will be able to schedule an appointment with any provider or practice that already counts you as a patient. Online scheduling varies by practice/program.

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