Anni Xu, - Medicare Emergency Medicine in Williamsport, PA

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Anni Xu, is a medicare enrolled "Emergency Medicine" physician in Williamsport, Pennsylvania. She went to State University Of New York At Stony Brook, School Of Medicine and graduated in 2014 and has 11 years of diverse experience with area of expertise as Emergency Medicine. She is a member of the group practice Lock Haven Emergency Physicians Pllc, Susquehanna Physician Services, Dubois Regional Medical Center and her current practice location is 700 High St, Williamsport, Pennsylvania. You can reach out to her office (for appointments etc.) via phone at (570) 321-2125.

Anni Xu is licensed to practice in Pennsylvania (license number MD465161) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1336553841.

Contact Information

Anni Xu,
700 High St,
Williamsport, PA 17701-3100
(570) 321-2125
Not Available

Map and Direction




Physician's Profile

Full NameAnni Xu
GenderFemale
SpecialityEmergency Medicine
Experience11 Years
Location700 High St, Williamsport, Pennsylvania
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Anni Xu attended and graduated from State University Of New York At Stony Brook, School Of Medicine in 2014
  NPI Data:
  • NPI Number: 1336553841
  • Provider Enumeration Date: 06/12/2014
  • Last Update Date: 12/05/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 7113291915
  • Enrollment ID: I20180920001539

Medical Identifiers

Medical identifiers for Anni Xu such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1336553841NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207P00000XEmergency Medicine MD465161 (Pennsylvania)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Williamsport Regional Medical CenterWilliamsport, PAHospital
Penn Highland DuboisDubois, PAHospital
Upmc Susquehanna MuncyMuncy, PAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Lock Haven Emergency Physicians Pllc05473944478
Susquehanna Physician Services2264336460510
Dubois Regional Medical Center5890689715361

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Anni Xu allows following entities to bill medicare on her behalf.
Entity NameJ C Blair Memorial Hospital
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1790996445
PECOS PAC ID: 2668378407
Enrollment ID: O20031211000322
Entity NameSusquehanna Physician Services
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992743868
PECOS PAC ID: 2264336460
Enrollment ID: O20040412001371
Entity NameEmergency Physician Associates Of Pennsylvania Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1619990900
PECOS PAC ID: 5597663252
Enrollment ID: O20040913000755
Entity NameDubois Regional Medical Center
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1992802391
PECOS PAC ID: 5890689715
Enrollment ID: O20050411000464
Entity NameEmergency Care Services Of Pennsylvania Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1114955010
PECOS PAC ID: 1759301799
Enrollment ID: O20051206000046
Entity NameLock Haven Emergency Physicians Pllc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1710201322
PECOS PAC ID: 0547394447
Enrollment ID: O20100813000754

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Anni Xu is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Anni Xu,
1201 Grampian Blvd,
Williamsport, PA 17701-1900

Ph: () -		Anni Xu,
700 High St,
Williamsport, PA 17701-3100

Ph: (570) 321-2125

Reviews and Comments


Emergency Medicine Doctors in Williamsport, PA

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Mak Sarich, MD
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Rafay Khan, DO
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Dr. Gregory S Little, MD
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Bhupinder Datta, MD
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Gregory Frailey,
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Elizabeth Cooper,
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Medicare: Accepting Medicare Assignments
Practice Location: 700 High St, Williamsport, PA 17701
Phone: 570-321-2125    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.