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Alyssa M. Sebastianelli, MSN, BSN, CRNP, DNP

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About Me

Alyssa M. Sebastianelli, MSN, BSN, CRNP, DNP, joined Mount Nittany Health because of its strong reputation for delivering exceptional inpatient care. As a gastroenterology specialist, Alyssa is committed to providing personalized, patient-centered and evidence-based care. "My expertise lies in gastroenterology conditions; I aim to prevent, diagnose, and treat, thereby enhancing patients' quality of life," she said.

Alyssa is inspired by the relationships she builds with her patients. ""I really enjoy acting as a counselor to patients in their healthcare journey. I'm here to support and help them, answer their questions, and ease their worries,"" she explained.

A lifelong learner, Alyssa earned her Bachelor of Science in Nursing and Master of Science in Nursing from Penn State, where she also recently completed her Doctor of Nursing Practice (DNP) with a focus on leadership. Her DNP project, "Self-Management of Ascites in Patients with Cirrhosis," reflects her dedication to improving patient outcomes.

Outside of work, Alyssa enjoys spending time with family, friends and her dog, Gigi. She’s a big fan of Penn State athletics and loves outdoor activities. Having grown up in Centre County, Alyssa feels deeply connected to her community and values the region’s focus on well-being and quality healthcare.

Female

English

Credentials

Credentials

Medical Education
The Pennsylvania State University - University Park, PA

Insurance

Insurance

Accepted insurance providers

  • Aetna
  • Advantra
  • AmeriHealth Caritas Pennsylvania
  • AmeriHealth Caritas Pennsylvania CHC
  • AmeriHealth Caritas Northeast
  • AmeriHealth Caritas VIP Care
  • Capital Blue Cross (including Senior Blue, Keystone Health Plan Central, Health One and Blue CHIP)
  • Cigna (accepted system-wide, except by CEMA, the Emergency Department provider group)
  • Community Care Behavioral Health Organization (psychiatry)
  • Gateway Health Plan (Medical Assistance Product)
  • Geisinger Health Plan/Geisinger Gold/GHP Family
  • Government: CHAMPUS, Tricare/Black Lung Benefits Act
  • HealthAmerica/HealthAssurance/First Health
  • Highmark/PA Blue Shield (accepted system-wide, except by Centre Pathology Associates, the Pathology department provider group as of 1/1/26)
  • Medical Assistance
  • Medicare/Medicare Railroad
  • PA Health and Wellness
  • Preferred Health Services
  • Three Rivers Provider Network
  • United Behavioral Health (psychiatry)
  • United Healthcare/United Healthcare Student Resources
  • UPMC Health Plan/UPMC For Life/UPMC For You
Reviews

Reviews

4.8

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111 Ratings 17 Reviews
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  • Stars
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    February 3, 2026

    I am finally getting the answers care I need I am so happy about everything they have done.

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    January 28, 2026

    Alyssa is very thorough with her exams and asks me questions to know more about my issues.

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    January 27, 2026

    Alyssa listens, is very knowledgeable, takes time, extremely professional and empathetic.

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    January 5, 2026

    Excellent provider, clear and fast communication, trusted!

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    December 14, 2025

    Ms. Sebastinelli is outstanding!

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    December 3, 2025

    Alyssa was very personable, and patiently listened to all of my concerns. She explained the test that she recommended. She has followed up wme thru messages after the results of every test.

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    November 11, 2025

    Alyssa is always very helpful and listens to my concerns and offers solutions and allows me to be in the decision process.

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    November 6, 2025

    She is fantastic

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    September 20, 2025

    She was a great Dr. Act listened to me and included me in the plan for treatment.

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    August 27, 2025

    She was amazing. I was hesitant from transitioning my son from a major children's hospital to another provider, but she listened and was just as thorough as children's hospital was. She even explained what would be next

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    June 7, 2025

    Overall good. She Didn't make eye contact at first but then warmed up and felt like the NP really was listening.

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    May 3, 2025

    I seen a PA who was great at listening to my issues. She answered all my questions and gave me additional explanations on plans for future care.

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    April 20, 2025

    She was excellent!!!

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    April 19, 2025

    The provider was knowledgeable of my problem and understanding of my concerns.Informative of recommend follow up pertaining to my condition.

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    April 5, 2025

    Alyssa was excellent to work with and was very knowledgeable in my treatment.

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    April 3, 2025

    First visit here and was very pleased

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    March 1, 2025

    She was very nice explained everything to me