Ellen Tsay
Orthopaedic Surgery Physician · Philadelphia, PA
Ellen Tsay is an orthopaedic surgery physician with a practice address in Philadelphia, Pennsylvania, and NPI 1194354951, issued on Apr 3, 2020. Check the license (Pennsylvania MD487615, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Ellen Tsay
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- MD487615 PA
25MA12498400 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 833 Chestnut St Ste 1220, Philadelphia, PA 19107
- Phone
- (800) 321-9999
- Enumerated
- Apr 3, 2020
- Record last updated
- Oct 10, 2025
- Fax
- (267) 479-1321
- Medicare enrollment
- Enrolled (PECOS I20250714004307); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 1,253 in Pennsylvania → Look up another NPI →
Also registered at 833 Chestnut St Ste 1220
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ikechukwu Amakiri, MD, MBAOrthopaedic Surgery of the Spine Physician1114503125
- Joseph Carroll, PA-CPhysician Assistant1306478649
- Michael Ciccotti, M.D.Orthopaedic Surgery Physician1245287556
- Jonathan Dalton, M.D.Orthopaedic Surgery Physician1205399888
- Stuart Davidson, MDOrthopaedic Surgery Physician1225577539
- Sean Delany, MDSports Medicine (Physical Medicine & Rehabilitation) Physician1326664343
Verify Ellen Tsay in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD487615Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
21 Medicare Part D claims for 13 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
Industry payments in 2024: $124.73
4 payments; by number, the most common kind was food and beverage; the largest payer was Stryker Corporation. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Reconstructive Orthopaedic Associates II LLCBensalem, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Tsay among 1,253 orthopaedic surgery physician records in Pennsylvania
Ellen Tsay is one of 1,253 orthopaedic surgery physician records with a practice address in Pennsylvania. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 10% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2020 · median 2003 among the 777 with a school on file
- Record last updated2025 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in Pennsylvania
There are 1,253 orthopaedic surgery physician records in Pennsylvania.
All 1,253 in Pennsylvania → Every provider in Philadelphia → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Scot Brown, MDPhiladelphia, PA 191071639338890
- Michael Ciccotti, M.D.Philadelphia, PA 191071245287556
- Barbara Frieman, M.D.Philadelphia, PA 191071770537193
- Benjamin Gray, MDPhiladelphia, PA 191071841427556
- John Horneff, MDPhiladelphia, PA 191071053639302
- Mara Karamitopoulos, MDPhiladelphia, PA 191071538362298
- Christopher Kepler, M.D.Philadelphia, PA 191071114184389
- James Krieg, MDPhiladelphia, PA 191071659480317
Common questions
What is Ellen Tsay's NPI number?
Ellen Tsay's National Provider Identifier (NPI) is 1194354951, issued on Apr 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Tsay located?
The NPPES record lists a practice address at 833 Chestnut St Ste 1220, Philadelphia, PA, 19107. Phone: (800) 321-9999. Providers update this record themselves, so call before visiting.
How can I verify Ellen Tsay's license?
NPPES lists Pennsylvania license number MD487615, 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 Ellen Tsay prescribe under Medicare Part D?
In 2024, Ellen Tsay had 21 Medicare Part D claims for 13 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
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.