Jillian Chan, MD
Jillian Chan, MD is a Neurology Physician in Ronkonkoma, NY, registered under NPI 1003159740.
Getting there
Here is what surrounds this office in Ronkonkoma, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 0.26 mi away. The nearest transit stop is 277 ft away.
Getting here and what is nearby
Transit 277 ft ~2 min
Parking 0.21 mi ~5 min
Parking 0.22 mi ~5 min
Parking 0.26 mi ~6 min
Restaurant Phayathai Restaurant 0.29 mi ~6 min
735 Hawkins Avenue, Lake Ronkonkoma 11779
Mo-Th 11:30-20:30; Fr 11:30-21:30; Sa 12:00-21:30; Su 12:00-20:30
Restaurant Wendy's 0.35 mi ~7 min
106 Portion Road, Lake Ronkonkoma 11779
Restaurant McDonald's 0.38 mi ~8 min
174 Portion Road, Lake Ronkonkoma 11779
07:00-21:00
Gas station Mobil 0.46 mi ~10 min
Grocery Aldi 0.49 mi ~10 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 |
|---|---|---|
| 292652 | NY | Neurology Physician primary |
This provider holds licence 292652 issued in NY. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Neurology covers
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures. NUCC Health Care Provider Taxonomy, code 2084N0400X
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 | 1003159740 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 1, 2013 |
| Last updated | Oct 6, 2018 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
650 HAWKINS AVE STE 7 Ronkonkoma, NY 11779 (631) 737-0055 Fax (631) 737-0076 |
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 | 1 | 5 | 9 | 7 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 5 | 9 | 7 | 8 |
Sum = 60 · next multiple of 10 = 60 · 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.