Gretchen Hiwatig
Gretchen Hiwatig is a Registered Nurse in Long Island City, NY, registered under NPI 1003334608. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty. 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 Long Island City, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 0.43 mi away at LaGuardia Community College Parking Lot. The nearest transit stop is 318 ft away, served by 28th Street & Queens Plaza South. A pharmacy sits 0.28 mi from the entrance (Agustin Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 598 ft away.
Getting here and what is nearby
Transit Queens Plaza South & 28th Street 219 ft ~1 min
Restaurant Panda Express 230 ft ~1 min
Convenience Plaza Express 259 ft ~1 min
27-02 Queens Plaza South, Long Island City 11101
Pharmacy Walgreens 251 ft ~1 min
27-26 Queens Plaza South
07:00-22:00 open "Store" || Mo-Fr 09:00-20:00; Sa 09:00-18:00; Su 10:00-18:00 open "Pharmacy"
Restaurant Checkers 238 ft ~1 min
27-12 Queens Plaza South, Long Island City 11101
Mo-We 09:30-01:00; Th-Sa 09:30-02:00; Su 10:00-01:00
Restaurant Dunkin' 244 ft ~1 min
27-04 Queens Plaza South, Long Island City 11101
Mo-Sa 05:00-22:00; Su 06:00-22:00
Transit 28th Street & Queens Plaza South 303 ft ~2 min
Transit 28th Street & Queens Plaza South 318 ft ~2 min
Coffee Starbucks 323 ft ~2 min
25-14 Queens Plaza South, Long Island City 11101
Mo-Fr 05:30-19:00; Sa-Su 06:00-18:30
Convenience Green Valley 340 ft ~2 min
Parking MBA Parking 313 ft ~2 min
Coffee Gong Cha 383 ft ~2 min
Convenience Green Valley 372 ft ~2 min
25-12 Queens Plaza South
Pharmacy Healthy Living Pharmacy 434 ft ~2 min
42-15 Crescent Street
Hotel Courtyard 505 ft ~2 min
29-15 Queens Plaza North, Long Island City 11101
Coffee Heytea 598 ft ~3 min
42-20 27th Street, Long Island City 11101
Mo-Su 11:00-21:45
Hotel Hilton Garden Inn Long Island City/New York 603 ft ~3 min
Grocery City Acres Market 570 ft ~3 min
29-18 Queens Plaza South, Long Island City 11101
Mo-Su 07:00-23:00
Hotel Red Lion Inn & Suites 656 ft ~3 min
Grocery Koufuku Mart 633 ft ~3 min
Gas station Mobil 730 ft ~3 min
24-15 41st Avenue, Long Island City 11101
Grocery Foodcellar Market 0.26 mi ~6 min
43-18 Crescent Street, Long Island City 11101
Mo-Fr 07:30-21:00; Sa, Su 08:00-21:00
Pharmacy Agustin Pharmacy 0.28 mi ~6 min
Gas station Sunoco 0.31 mi ~7 min
13-12 Queens Plaza South
Parking 0.40 mi ~9 min
45-40 Court Square, 11101
Gas station Exxon 0.42 mi ~9 min
Queens Boulevard, New York 11101
Parking LaGuardia Community College Parking Lot 0.43 mi ~9 min
47th Avenue, 11101
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 |
|---|---|---|
| 636379-1 | NY | Registered Nurse primary |
| 636379-1 | NY | School Registered Nurse |
This provider holds licence 636379-1 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 Registered Nurse covers
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span. NUCC Health Care Provider Taxonomy, code 163W00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 163W00000X | Registered Nurse | 636379-1 | NY | primary |
| 163WS0200X | School Registered Nurse School | 636379-1 | 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 | 1003334608 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 2, 2017 |
| Last updated | Nov 5, 2017 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
2811 QUEENS PLZ N FL 5 Long Island City, NY 11101 (718) 391-8300 |
| Mailing address |
2237 ELLIS AVE Bronx, NY 10462 |
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 | 3 | 3 | 4 | 6 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 3 | 8 | 6 | 0 |
Sum = 52 · next multiple of 10 = 60 · check digit = 8 · actual last digit = 8
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.