MARK CASSOL MD PSC
MARK CASSOL MD PSC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003071200, based in Louisville, KY. It is classified under Ophthalmology Physician.
Getting there
Here is what surrounds this office in Louisville, based on OpenStreetMap data collected Sep 3, 2026. Parking is available about 0.23 mi away. The nearest transit stop is 447 ft away, served by West Broadway @ South 27th.
Getting here and what is nearby
Transit West Broadway @ South 26th 142 ft ~1 min
Transit West Broadway @ South 26th 152 ft ~1 min
Convenience Tony's Convenient Mart 148 ft ~1 min
2532 West Broadway, Louisville 40211
Convenience Dino's Food Mart 190 ft ~1 min
2601 West Broadway, Louisville 40211
Restaurant Popeyes 263 ft ~1 min
2618 West Broadway, Louisville 40211
Gas station Kroger 393 ft ~2 min
Transit West Broadway @ South 27th 447 ft ~2 min
Grocery Kroger 617 ft ~3 min
2710 West Broadway, Louisville 40211
07:00-21:00
Restaurant Subway 715 ft ~3 min
2716 West Broadway, Louisville 40211
Mo-Fr 08:00-21:00; Sa-Su 09:00-21:00
Parking 864 ft ~4 min
Restaurant McDonald's 852 ft ~4 min
2720 West Broadway, Louisville 40211
Mo-Sa 05:00-23:00 open "Dining in" || Su 06:00-22:00 open "Dining in" || Mo-Sa 05:00-24:00 open "Drive-through" || Su 06:00-23:00 open "Drive-through"
Parking 0.22 mi ~5 min
Parking 0.23 mi ~5 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 |
|---|---|---|
| 39515 | KY | Ophthalmology Physician primary |
This provider holds licence 39515 issued in KY. 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
- Part B Supplier - Clinic/group Practice
- PAC ID
- 2163570565
- Enrollment ID
- O20090501000186
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Clinic/group Practice. 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 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
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003071200 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jul 28, 2008 |
| Last updated | Jul 28, 2008 |
| Status | Active |
| Practice address |
2600 W. BROADWAY, SUITE 105 Louisville, KY 40211 (502) 772-3625 |
| Mailing address |
PO BOX 8073 Louisville, KY 40257 |
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 | 0 | 7 | 1 | 2 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 7 | 2 | 2 | 0 |
Sum = 40 · next multiple of 10 = 40 · check digit = 0 · actual last digit = 0
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.