Mallory Hooker, RD
Mallory Hooker, RD is a Registered Dietitian in Chelsea, MA, registered under NPI 1003670514. 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 Chelsea, based on OpenStreetMap data collected Oct 13, 2026. Parking is available about 0.59 mi away at PreFlight Airport Parking. There is EV charging 0.49 mi from the office (ChargePoint) — useful if you are driving in from out of town. The nearest transit stop is 383 ft away, served by Broadway opp Green St. A pharmacy sits 0.46 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.34 mi away.
Getting here and what is nearby
Transit Broadway @ Eleanor St 134 ft ~1 min
Transit Broadway @ Eleanor St 185 ft ~1 min
Transit Broadway opp Green St 383 ft ~2 min
Restaurant Dunkin' 0.21 mi ~5 min
356 Eastern Avenue, Chelsea 02150
Mo-Su 05:00-21:00
Restaurant Burrito's Pizza & Grill 0.24 mi ~5 min
Parking 0.31 mi ~7 min
Parking 0.31 mi ~7 min
Coffee Pan Y Cafe 0.32 mi ~7 min
173 Washington Avenue, Chelsea 02150
Mo-Fr 06:00-19:00; Sa 07:00-14:00; Su 08:00-14:00
Coffee Starbucks 0.34 mi ~7 min
1100 Revere Beach Parkway, Chelsea 02150
Mo-Su 04:30-22:00
Restaurant New Brown Jug 0.40 mi ~9 min
1014 Revere Beach Parkway, Chelsea 02150
Mo-Su 11:00-01:00
Pharmacy Walgreens 0.46 mi ~10 min
1010 Broadway, Chelsea 02150
Hotel Holiday Inn Boston Logan Airport - Chelsea 0.48 mi ~10 min
1012 Broadway, Chelsea 02150
EV charging ChargePoint 0.49 mi ~10 min
Parking PreFlight Airport Parking 0.59 mi ~12 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 |
|---|---|---|
| LDN6779 | MA | Registered Dietitian primary |
This provider holds licence LDN6779 issued in MA. 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 Dietitian, Registered covers
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation. NUCC Health Care Provider Taxonomy, code 133V00000X
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 | 1003670514 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 6, 2024 |
| Last updated | Feb 6, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | RD |
| Practice address |
25 ELEANOR ST UNIT 19 Chelsea, MA 02150 (802) 417-7496 |
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 | 7 | 0 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 7 | 0 | 5 | 2 |
Sum = 46 · next multiple of 10 = 50 · check digit = 4 · actual last digit = 4
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.