Gretchen Ostrander, ATC
Gretchen Ostrander, ATC is a provider specialising in Athletic Trainer in New York, NY, registered under NPI 1003263625.
Getting there
Here is what surrounds this office in New York, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.38 mi away at Surrey Garage. The nearest transit stop is 682 ft away, served by York Avenue & East 69th Street. A pharmacy sits 0.36 mi from the entrance (Goldberg's Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.23 mi away.
Getting here and what is nearby
Restaurant Dos Torros 638 ft ~3 min
1327 York Avenue, 10021
Mo-Fr 07:30-21:00, Sa-Su 08:00-21:00
Restaurant Chopt 640 ft ~3 min
1327 York Avenue, 10021
Mo-Th 10:30-21:00, Fr 10:30-20:00, Sa-Su 11:00-19:00
Transit York Avenue & East 72nd Street 665 ft ~3 min
Transit York Avenue & East 69th Street 673 ft ~3 min
Transit York Avenue & East 69th Street 682 ft ~3 min
Convenience Green Gourmet 816 ft ~4 min
Restaurant York Ave Pizza 787 ft ~3 min
434 East 72nd Street
Mo 10:00-20:00; Tu-Fr 10:00-21:00; Sa 11:00-21:00
Convenience York Grill & Juice Bar 873 ft ~4 min
Coffee Alex Cafe & Deli 998 ft ~4 min
Convenience Grace Convenience 0.20 mi ~5 min
Coffee Coffee Inn 0.23 mi ~5 min
Coffee Yia Yia's Homemade Greek Food 0.23 mi ~5 min
Hotel Ronald McDonald House New York 0.24 mi ~5 min
405 East 73rd Street
Pharmacy Duane Reade 0.24 mi ~5 min
1352 1st Avenue, New York 10021
00:00-24:00 open "Store" || Mo-Fr 08:00-13:30, 14:00-22:00; Sa 09:00-13:30, 14:00-18:00; Su 10:00-13:30, 14:00-18:00 open "Pharmacy"
Grocery Morton Williams 0.25 mi ~6 min
1331 1st Avenue, New York 10021
PH,Mo-Su 00:00-23:59
Grocery A Matter of Health 0.27 mi ~6 min
Grocery Foodtown 0.30 mi ~7 min
686 Main Street, New York 10044
Mo-Fr 07:00-22:00,10:00-20:00; Sa 07:00-22:00,10:00-18:00; Su 07:00-22:00,10:00-14:00
Pharmacy Vitahealth Apothecary 0.32 mi ~7 min
1235 1st Avenue
Parking 0.33 mi ~7 min
403 East 65th Street, New York 10065
Parking Motorgate Public Parking Garage 0.33 mi ~7 min
686 Main Street, 10044
Pharmacy Goldberg's Pharmacy 0.36 mi ~8 min
Mo-Th 08:30-20:00; Fr 08:30-19:00; Sa 09:00-16:00
Parking Surrey Garage 0.38 mi ~8 min
439 East 77th Street, 10075
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 |
|---|---|---|
| 002840-1 | NY | Athletic Trainer primary |
This provider holds licence 002840-1 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 Athletic Trainer covers
Athletic trainers are allied health care professionals who work in consultation with or under the direction of physicians, and specialize in the prevention, assessment, treatment and rehabilitation of injuries and illnesses. Currently, the entry-level employment requirements are a bachelor's degree with a major in athletic training from an accredited university or college. A majority of athletic trainers hold advanced degrees. National board certification is generally required as a condition of state licensure and employment. Most states regulate athletic trainers, and they practice within the scope of that license or regulation. Clinical practice includes emergency care, rehabilitation, reconditioning, therapeutic exercise, wellness programs, exercise physiology, kinesiology, biomechanics, nutrition, psychology and health care administration. NUCC Health Care Provider Taxonomy, code 2255A2300X
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 | 1003263625 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 24, 2016 |
| Last updated | Dec 20, 2023 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | ATC |
| Practice address |
535 E 70TH ST New York, NY 10021 (203) 257-5414 |
| Mailing address |
68 MAIN ST UNIT 4-2B Norwalk, CT 06851 |
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 | 6 | 3 | 6 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 6 | 6 | 6 | 4 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.