Tammy Mefford, RN, HIS
Tammy Mefford, RN, HIS is a Hearing Instrument Specialist in Scottsdale, AZ, registered under NPI 1003017583.
Getting there
Here is what surrounds this office in Scottsdale, based on OpenStreetMap data collected Aug 29, 2026. Parking is available about 996 ft away. The nearest transit stop is 0.25 mi away, served by East Shea Boulevard and 68th Street. A pharmacy sits 387 ft from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 914 ft away.
Getting here and what is nearby
Coffee Light Heart Coffee 0.00 mi ~1 min
6969 East Shea Boulevard, Scottsdale 85254
Mo-Th 07:00-16:00; Fr 07:00-18:00; Sa 08:00-16:00; Su 11:00-16:00
Transit 291 ft ~2 min
Transit 357 ft ~2 min
Pharmacy Walgreens 387 ft ~2 min
7011 East Shea Boulevard, Scottsdale 85253
Restaurant Krispy Kreme 523 ft ~2 min
7055 East Shea Boulevard, Scottsdale 85253
Parking 689 ft ~3 min
Parking 738 ft ~3 min
Coffee U.S. Egg 912 ft ~4 min
Coffee Starbucks 914 ft ~4 min
Parking 996 ft ~4 min
Hotel Extended Stay America - Phoenix - Scottsdale 0.20 mi ~5 min
Convenience Shell 0.24 mi ~5 min
10444 East Shea Boulevard, Scottsdale 85254
Transit East Shea Boulevard and 68th Street 0.25 mi ~6 min
Gas station Shell 0.25 mi ~6 min
10444 East Shea Boulevard;North Scottsdale Road, Scottsdale 85254
Restaurant Denny's 0.25 mi ~6 min
10340 North Scottsdale Road, Scottsdale 85254
Restaurant Pizza Hut 0.26 mi ~6 min
Convenience Circle K 0.28 mi ~6 min
10200 North Scottsdale Road, Scottsdale 85253
Gas station Circle K 0.30 mi ~6 min
Gas station ARCO 0.30 mi ~7 min
10601 North Scottsdale Road, Scottsdale 85254
Convenience Arco 0.32 mi ~7 min
10601 North Scottsdale Road, Scottsdale 85254
Grocery Safeway 0.42 mi ~9 min
10773 North Scottsdale Road, Scottsdale 85254
Mo-Su 03:00-22:00
Hotel Hampton Inn & Suites Phoenix/Scottsdale on Shea Boulevard 0.44 mi ~9 min
Hotel Holiday Inn Express Scottsdale North 0.45 mi ~10 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 |
|---|---|---|
| HAD4345 | AZ | Hearing Instrument Specialist primary |
This provider holds licence HAD4345 issued in AZ. 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 Hearing Instrument Specialist covers
Individuals who test hearing for the selection, adaptation, fitting, adjusting, servicing, and sale of hearing aids. Hearing Instrument Specialist is a designation provided individuals who qualify by the National Hearing Aid Society NUCC Health Care Provider Taxonomy, code 237700000X
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 | 1003017583 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 30, 2007 |
| Last updated | Jul 8, 2007 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RN, HIS |
| Practice address |
6969 E SHEA BLVD SUITE 275 Scottsdale, AZ 85254 (480) 425-8800 Fax (480) 874-3245 |
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 | 0 | 1 | 7 | 5 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 1 | 5 | 5 | 7 |
Sum = 47 · next multiple of 10 = 50 · 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.