Mariel Macaskill
Mariel Macaskill is a Physician Assistant in Hempstead, NY, registered under NPI 1003630153. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
Here is what surrounds this office in Hempstead, based on OpenStreetMap data collected Oct 11, 2026. Parking is available about 273 ft away at Faculty/Staff Parking - Lot 76. There is EV charging 849 ft from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 979 ft away, served by Hempstead Turnpike & Duncan Road. If you arrive early, there is a coffee shop 948 ft away.
Getting here and what is nearby
Parking Faculty/Staff Parking - Lot 69 102 ft ~1 min
Parking Faculty/Staff Parking - Lot 68 212 ft ~1 min
Parking Faculty/Staff Parking - Lot 76 273 ft ~2 min
Restaurant Dunkin' on the Quad 390 ft ~2 min
1000 Fulton Avenue, Hempstead 11550
Mo-Th 07:30-18:00; Fr 00:00-14:00; Sa-Su 00:00-24:00
Coffee Breslin Kiosk 484 ft ~2 min
Coffee Axxin Library Cafe 525 ft ~2 min
EV charging 525 ft ~2 min
EV charging ChargePoint 644 ft ~3 min
Restaurant Au Bon Pain 666 ft ~3 min
116 California Avenue, Uniondale 11553
EV charging ChargePoint 849 ft ~4 min
Transit Hempstead Turnpike & Duncan Road 884 ft ~4 min
Transit Hempstead Turnpike & California Avenue 958 ft ~4 min
Coffee Starbucks 948 ft ~4 min
Transit Hempstead Turnpike & Duncan Road 979 ft ~4 min
Restaurant Popeyes 992 ft ~4 min
Gas station Exxon 0.33 mi ~7 min
Gas station BP 0.34 mi ~7 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 Physician Assistant covers
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician. NUCC Health Care Provider Taxonomy, code 363A00000X
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 | |
|---|---|---|---|---|
| 363A00000X | Physician Assistant | — | — | primary |
| 390200000X | Student in an Organized Health Care Education/Training Program | — | — |
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 | 1003630153 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 14, 2024 |
| Last updated | Jan 23, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Practice address |
1000 HEMPSTEAD TURNPIKE Hempstead, NY 11549 (516) 463-6600 |
| Mailing address |
45 VAUGHN HILL RD Bolton, MA 01740 |
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 | 6 | 3 | 0 | 1 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 3 | 0 | 1 | 1 |
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.