Cynthia Santiago, M.D.
Cynthia Santiago, M.D. is a Family Medicine Physician in Port Jefferson Station, NY, registered under NPI 1003003856. 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 Port Jefferson Station, based on OpenStreetMap data collected Aug 28, 2026. Parking is available about 0.50 mi away. The nearest transit stop is 1,008 ft away.
Getting here and what is nearby
Restaurant Dunkin' 480 ft ~2 min
Restaurant Panera Bread 563 ft ~3 min
4959 Nesconset Highway, Port Jefferson Station 11776
Mo-Sa 07:00-21:00; Su 07:00-20:30
Restaurant Wendy's 642 ft ~3 min
4955 Nesconset Highway, Port Jefferson Station 11776
08:00-22:00
Gas station BP 726 ft ~3 min
Parking 811 ft ~4 min
Transit 1,008 ft ~4 min
Grocery Meat Farms 0.24 mi ~5 min
Gas station Sunoco 0.33 mi ~7 min
Grocery Uncle Giuseppes' 0.46 mi ~10 min
1108 Route 112, Port Jefferson 11776
Mo-Su 07:00-21:30; Sa 07:00-20:30
Parking 0.47 mi ~10 min
Parking 0.50 mi ~11 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 |
|---|---|---|
| 217808 | NY | Family Medicine Physician primary |
This provider holds licence 217808 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 - Family Practice
- PAC ID
- 6305813148
- Enrollment ID
- I20040913000368
Medicare enrolment is recorded as approved under the provider type Practitioner - Family 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 Family Medicine covers
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity. NUCC Health Care Provider Taxonomy, code 207Q00000X
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 | 1003003856 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 26, 2007 |
| Last updated | Dec 19, 2014 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | M.D. |
| Practice address |
5 ROOSEVELT AVE Port Jefferson Station, NY 11776 (631) 732-6984 Fax (631) 732-7019 |
| Other identifiers |
02162494
· Medicaid (NY) |
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 | 0 | 3 | 8 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 0 | 6 | 8 | 1 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
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.