Jonathan Tsui, MD
Jonathan Tsui, MD is an Ophthalmology Physician in Philadelphia, PA, registered under NPI 1003347428. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Philadelphia, based on OpenStreetMap data collected Sep 20, 2026. Parking is available about 0.40 mi away. The nearest transit stop is 0.20 mi away, served by 40th and Baring Stop. A pharmacy sits 0.34 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 1,002 ft away.
Getting here and what is nearby
Transit Market St & 39th St 565 ft ~3 min
Coffee Corner Bakery 781 ft ~3 min
3737 Market Street, Philadelphia 19104
Mo-Fr 07:00-16:00; Sa 08:00-14:00
Transit 40th Street & Market Street 853 ft ~4 min
Hotel Red Cross House 856 ft ~4 min
Restaurant Santucci's Original Square Pizza 818 ft ~4 min
3700 Lancaster Avenue, Philadelphia 19104
Mo-Su 11:00-23:00
Coffee Shibam Coffee 916 ft ~4 min
3748 Lancaster Avenue, Philadelphia 19104
Su-Th 15:00-23:00; Fr-Sa 15:00-24:00
Gas station Getty Gas 915 ft ~4 min
Restaurant Han Dynasty 935 ft ~4 min
3711 Market Street, Philadelphia 19104
Mo-Th 11:30-21:30; Fr-Sa 11:30-22:00; Su 11:30-21:00
Restaurant Crown Fried Chicken 970 ft ~4 min
Coffee Luck You 1,002 ft ~4 min
3737 Lancaster Avenue, Philadelphia 19104
Mo-Su 10:00-20:00
Transit 40th and Baring Stop 0.20 mi ~5 min
Convenience Martinez Grocery 0.20 mi ~4 min
401 North 40th Street, Philadelphia 19104
Convenience Old Nelson 0.31 mi ~7 min
Parking 0.32 mi ~7 min
Parking 40th Street Parking Lot 0.33 mi ~7 min
4001 Walnut Street, Philadelphia 19104
Pharmacy CVS Pharmacy 0.33 mi ~7 min
Grocery Acme 0.33 mi ~7 min
4001 Walnut Street, Philadelphia 19104
Mo-Su 07:00-23:00
Pharmacy Walgreens 0.34 mi ~7 min
Grocery Eight Brothers 0.36 mi ~8 min
Hotel Sheraton Philadelphia University City Hotel 0.37 mi ~8 min
Hotel Hilton Inn at Penn 0.39 mi ~8 min
Convenience Old Nelson 0.40 mi ~8 min
3438-3448 Lancaster Avenue, Philadelphia 19104
Mo-Sa 08:00-22:00; Su 09:00-21:00
Parking 0.40 mi ~8 min
Ludlow Street, Philadelphia 19104
Grocery Giant 0.47 mi ~10 min
3401 Chestnut Street, Philadelphia 19104
07:00-22:00
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 |
|---|---|---|
| 25MA12411000 | NJ | Ophthalmology Physician primary |
| MD473726 | PA | Ophthalmology Physician |
Licences are recorded in 2 states: NJ, PA. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Ophthalmology
- PAC ID
- 8729497698
Enrolled in Medicare 2 times, across 2 states:
| State | Enrollment ID | Provider type |
|---|---|---|
| Pennsylvania | I20210505000474 | Practitioner - Ophthalmology |
| New Jersey | I20241202000213 | Practitioner - Ophthalmology |
Medicare enrolment is recorded as approved under the provider type Practitioner - Ophthalmology. There are 2 separate enrolment records across 2 states (PA, NJ). 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.
Licensed in 2 states
This provider holds licences in 2 states: New Jersey and Pennsylvania. The practice address on file is in Philadelphia, PA, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- MD473726
- Specialty
- Ophthalmology Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Ophthalmology covers
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses. NUCC Health Care Provider Taxonomy, code 207W00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207W00000X | Ophthalmology Physician | 25MA12411000 | NJ | primary |
| 207W00000X | Ophthalmology Physician | MD473726 | PA |
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 | 1003347428 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 27, 2017 |
| Last updated | Dec 17, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
51 N. 39TH STREET Philadelphia, PA 19104 (215) 662-8100 Fax (215) 662-1721 |
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 | 4 | 7 | 4 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 4 | 5 | 4 | 4 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.