Stephen Chen
Stephen Chen is an Orthopaedic Surgery Physician in Philadelphia, PA, registered under NPI 1003375072.
Getting there
Here is what surrounds this office in Philadelphia, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 424 ft away. The nearest transit stop is 0.40 mi away, served by Olney Avenue & 7th St.
Getting here and what is nearby
Parking 198 ft ~1 min
Parking Willowcrest lot 274 ft ~2 min
Parking 424 ft ~2 min
1201 West Tabor Road, Philadelphia
Convenience Rodriguez Groceries 1,001 ft ~4 min
Restaurant Dunkin' 0.21 mi ~5 min
1345 West Olney Avenue, Philadelphia 19141
04:00-17:00
Transit 0.22 mi ~5 min
Restaurant Philly Pretzel Factory 0.24 mi ~5 min
5600 North Broad Street, Philadelphia 19141
Restaurant Ron's Caribbean Cafe 0.32 mi ~7 min
Transit Olney Avenue & 7th St 0.38 mi ~8 min
Transit Olney Avenue & 7th St 0.40 mi ~9 min
Gas station Sunoco 0.40 mi ~8 min
Convenience APlus 0.41 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| MD479902 | PA | Orthopaedic Surgery Physician primary |
This provider holds licence MD479902 issued in PA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Orthopedic Surgery
- PAC ID
- 2567797467
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Pennsylvania | I20240513002527 | Practitioner - Orthopedic Surgery |
| Mississippi | I20260403001579 | Practitioner - Orthopedic Surgery |
Medicare enrolment is recorded as approved under the provider type Practitioner - Orthopedic Surgery. There are 2 separate enrolment records across 2 states (PA, MS). Multiple enrolments usually mean the provider bills Medicare from more than one practice location, or has kept an earlier enrolment after moving. Each record carries its own enrolment ID, listed above. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Orthopaedic Surgery covers
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system. NUCC Health Care Provider Taxonomy, code 207X00000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003375072 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 18, 2019 |
| Last updated | Jun 9, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Practice address |
5501 OLD YORK RD Philadelphia, PA 19141 (215) 456-7890 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 3 | 7 | 5 | 0 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 7 | 1 | 0 | 5 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.