NORTH SHORE MEDICAL GROUP OF MT SINAI SCHOOL OF MEDICINE
NORTH SHORE MEDICAL GROUP OF MT SINAI SCHOOL OF MEDICINE is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003121013, based in Lake Ronkonkoma, NY. It is classified under Internal Medicine Physician.
Getting there
Here is what surrounds this office in Lake Ronkonkoma, based on OpenStreetMap data collected Sep 6, 2026. Parking is available about 322 ft away. The nearest transit stop is 0.35 mi away.
Getting here and what is nearby
Parking 133 ft ~1 min
Parking 263 ft ~1 min
Parking 322 ft ~2 min
Restaurant McDonald's 477 ft ~2 min
174 Portion Road, Lake Ronkonkoma 11779
07:00-21:00
Restaurant Burger King 609 ft ~3 min
254 Portion Road, Lake Ronkonkoma 11779-2347
07:00-21:00
Gas station Mobil 894 ft ~4 min
Restaurant Wendy's 0.26 mi ~6 min
106 Portion Road, Lake Ronkonkoma 11779
Grocery Giunta's Meat Farms 0.26 mi ~6 min
318 Portion Road, Lake Ronkonkoma 11779
Grocery Aldi 0.34 mi ~7 min
Transit 0.35 mi ~8 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
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 | 1003121013 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Aug 13, 2010 |
| Last updated | Aug 13, 2010 |
| Status | Active |
| Practice address |
201 PORTION RD SUITE C Lake Ronkonkoma, NY 11779 (631) 585-5959 |
| Other names |
North Shore Medical Group Former Legal Name |
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 | 2 | 1 | 0 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 2 | 2 | 0 | 2 |
Sum = 37 · next multiple of 10 = 40 · check digit = 3 · actual last digit = 3
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.