Jean Chalhoub, M.D
Jean Chalhoub, M.D is a Gastroenterology Physician in Staten Island, NY, registered under NPI 1003298407. This provider registers 3 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Staten Island, based on OpenStreetMap data collected Sep 17, 2026. Parking is available about 681 ft away. The nearest transit stop is 0.22 mi away, served by Seaview Avenue & Olympia Boulevard. A pharmacy sits 0.43 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.38 mi away.
Getting here and what is nearby
Transit Olympia Boulevard & Mason Avenue 66 ft ~1 min
Parking 218 ft ~1 min
Parking 390 ft ~2 min
Parking 681 ft ~3 min
Transit Seaview Avenue & Olympia Boulevard 0.20 mi ~4 min
Transit Seaview Avenue & Olympia Boulevard 0.22 mi ~5 min
Restaurant Trattoria Oliveto 0.35 mi ~8 min
1642 Hylan Boulevard, Staten Island 10305
Mo 12-21:30; Tu off; We,Th 12:00-21:30; Fr,Sa 12:00-22:00; Su 13:00-21:30
Convenience High End Convenience 0.37 mi ~8 min
Pharmacy North Health Pharmacy 0.37 mi ~8 min
Restaurant Bagels on the Boulevard 0.37 mi ~8 min
1728 Hylan Boulevard
Coffee Tim Hortons 0.38 mi ~8 min
1562 Hylan Boulevard, Staten Island 10305
Mo-We 05:00-24:00; Fr-Su 05:00-24:00
Convenience 7-Eleven 0.38 mi ~8 min
Gas station Shell 0.38 mi ~8 min
Restaurant Wendy's 0.38 mi ~8 min
1661 Hylan Boulevard, Staten Island 10305
09:00-22:00
Pharmacy Seaview Pharmacy 0.41 mi ~9 min
Pharmacy Walgreens 0.43 mi ~9 min
1759 Hylan Boulevard
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 |
|---|---|---|
| 311045 | NY | Gastroenterology Physician primary |
| 311045 | NY | Internal Medicine Physician |
This provider holds licence 311045 issued in NY. 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 - Gastroenterology
- PAC ID
- 5799033981
- Enrollment ID
- I20220324000617
Medicare enrolment is recorded as approved under the provider type Practitioner - Gastroenterology. 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 Gastroenterology covers
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs. NUCC Health Care Provider Taxonomy, code 207RG0100X
All registered taxonomy codes
This provider registers 3 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207RG0100X | Gastroenterology Physician Gastroenterology | 311045 | NY | primary |
| 207R00000X | Internal Medicine Physician | 311045 | NY | |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | NY |
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 | 1003298407 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 22, 2015 |
| Last updated | Feb 3, 2022 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | M.D |
| Practice address |
475 SEAVIEW AVENUE DEPARTMENT OF INTERNAL MEDICINE Staten Island, NY 10305 (718) 226-8855 |
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 | 2 | 9 | 8 | 4 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 9 | 7 | 4 | 0 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.