William Ruby, D.O.
William Ruby, D.O. is a Family Medicine Physician in Naples, FL, registered under NPI 1003149691.
Getting there
Here is what surrounds this office in Naples, based on OpenStreetMap data collected Sep 8, 2026. Parking is available about 0.43 mi away. The nearest transit stop is 966 ft away, served by Davis Boulevard. If you arrive early, there is a coffee shop 0.25 mi away.
Getting here and what is nearby
Transit Sandpiper Street 469 ft ~2 min
Restaurant IHOP 471 ft ~2 min
Restaurant Olive Garden 541 ft ~3 min
Hotel Holiday Inn Express & Suites Naples Downtown - 5th Avenue 563 ft ~3 min
Transit Frederick Street 781 ft ~3 min
Hotel La Quinta Inn & Suites Naples Downtown 767 ft ~3 min
Transit Davis Boulevard 966 ft ~4 min
Coffee Cafe on the Bay 0.25 mi ~5 min
1500 5th avenue south
Parking 0.26 mi ~6 min
Parking 0.31 mi ~7 min
Gas station 7-Eleven 0.32 mi ~7 min
Convenience 7-Eleven 0.33 mi ~7 min
Restaurant Go Pita 0.38 mi ~8 min
2224 Tamiami Trail East, Naples 34112
Mo-Sa 11:00-20:00; Sa 11:00-15:00
Hotel Hyatt House Naples/5th Avenue 0.41 mi ~9 min
Parking 0.43 mi ~9 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 |
|---|---|---|
| OS10550 | FL | Family Medicine Physician primary |
This provider holds licence OS10550 issued in FL. 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 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 | 1003149691 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 14, 2009 |
| Last updated | Jan 24, 2011 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | D.O. |
| Practice address |
3339 E TAMIAMI TRL STE 145 Naples, FL 34112 (239) 252-8200 Fax (239) 252-8808 |
| Mailing address |
PO BOX 429 Naples, FL 34106 |
| Other identifiers |
001423600
· Medicaid (FL) |
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 | 4 | 9 | 6 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 4 | 9 | 6 | 9 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.