Annmarie Butler, NP
Annmarie Butler, NP is an Adult Health Nurse Practitioner in Riverhead, NY, registered under NPI 1003249236. 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 Riverhead, based on OpenStreetMap data collected Sep 14, 2026. Parking is available about 0.31 mi away. The nearest transit stop is 0.32 mi away, served by Riverhead LIRR Stall 3. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Parking 0.21 mi ~5 min
Parking 0.28 mi ~6 min
Transit Riverhead LIRR 0.31 mi ~7 min
Parking 0.31 mi ~7 min
Transit Riverhead LIRR Stall 4 0.32 mi ~7 min
Transit Riverhead LIRR Stall 3 0.32 mi ~7 min
Coffee Railroad Cafe 0.32 mi ~7 min
159 Railroad Avenue, Riverhead 11901
Convenience Mae's Market 0.32 mi ~7 min
161 Railroad Avenue, Riverhead 11901
Restaurant Bagel Lovers Cafe 0.36 mi ~8 min
673 Osborne Avenue, Riverhead 11901
Convenience Atlantis Fresh Market 0.49 mi ~10 min
626 West Main Street, Riverhead 11901
Gas station BP 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 |
|---|---|---|
| 30306568 | NY | Adult Health Nurse Practitioner primary |
This provider holds licence 30306568 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 Adult Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 363LA2200X
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 | 1003249236 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 12, 2013 |
| Last updated | Nov 13, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | NP |
| Practice address |
729 ROANOKE AVE Riverhead, NY 11901 (631) 245-5000 |
| Mailing address |
213 SPRINGMEADOW DR UNIT M Holbrook, NY 11741 |
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 | 4 | 9 | 2 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 4 | 9 | 2 | 6 |
Sum = 54 · next multiple of 10 = 60 · 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.