Anni Xu
Emergency Medicine Physician · Williamsport, PA
Anni Xu is an emergency medicine physician with a practice address in Williamsport, Pennsylvania, and NPI 1336553841, issued on Jun 12, 2014. Check the license (Pennsylvania MD465161, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Anni Xu
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- MD465161 PA
Self-reported in NPPES; status is on the state search - Practice location
- 700 High St, Williamsport, PA 17701
- Phone
- (570) 321-2125
- Enumerated
- Jun 12, 2014
- Record last updated
- Dec 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20180920001539); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Stony Brook, School Of Medicine, 2014
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,911 in Pennsylvania → Look up another NPI →
Also registered at 700 High St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carol Adams, CRNACertified Registered Nurse Anesthetist1285938563
- Kristin Adams, M.D.Neurology Physician1326188756
- Comfort Adewunmi, DOInternal Medicine Physician1871120881
- Faryal AfzalHospitalist Physician1760659783
- Laura Aguirre, CRNPNurse Practitioner1093577942
- Kylie Akers, MS, OTR/LOccupational Therapist1396430492
Verify Anni Xu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD465161Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average emergency medicine physician in 2024
599 Medicare Part D claims for 398 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 3% of claims. 85 claims were for opioids.
Most prescribed
- Cefdinir74 claims
- Azithromycin52 claims
- Ondansetron Odt48 claims
- Prednisone39 claims
- Cyclobenzaprine Hcl35 claims
- Tramadol Hcl35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 81.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 3 group practices
- Dubois Regional Medical CenterDu Bois, PA
- Lock Haven Emergency Physicians PLLCLock Haven, PA
- Susquehanna Physician ServicesWilliamsport, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anni Xu among 3,911 emergency medicine physician records in Pennsylvania
Anni Xu is one of 3,911 emergency medicine physician records with a practice address in Pennsylvania. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 58% of them.
- NPI issued2014 · 58% of these records are older, 39% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2014 · median 2013 among the 2,231 with a school on file
- Record last updated2025 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 emergency medicine physician records list a practice address in Williamsport
They are 26 of the 1,371 NPPES records with a practice address in Williamsport, and 3,911 emergency medicine physician records in Pennsylvania.
All 3,911 in Pennsylvania → Every provider in Williamsport → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Maher Alhashimi, MDWilliamsport, PA 177011548290380
- Elizabeth CooperWilliamsport, PA 177011245645944
- Bhupinder Datta, MDWilliamsport, PA 177011205872421
- Michael Gerst, DOWilliamsport, PA 177011417114794
- Geoffrey Hayden, MDWilliamsport, PA 177011982798575
- Joshua Morley, MDWilliamsport, PA 177011023404217
- Jeffrey Myers, DOWilliamsport, PA 177011275509960
- Alejandro Ramon CubillosWilliamsport, PA 177011407262108
Common questions
What is Anni Xu's NPI number?
Anni Xu's National Provider Identifier (NPI) is 1336553841, issued on Jun 12, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Anni Xu located?
The NPPES record lists a practice address at 700 High St, Williamsport, PA, 17701. Phone: (570) 321-2125. Providers update this record themselves, so call before visiting.
How can I verify Anni Xu's license?
NPPES lists Pennsylvania license number MD465161, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Anni Xu prescribe under Medicare Part D?
In 2024, Anni Xu had 599 Medicare Part D claims for 398 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Anni Xu's MIPS final score?
The 2023 MIPS final score is 81.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.