Kara Lydon, RD, LDN, RYT
Kara Lydon, RD, LDN, RYT is a Registered Dietitian in Boston, MA, registered under NPI 1003357179.
Getting there
Here is what surrounds this office in Boston, based on OpenStreetMap data collected Sep 20, 2026. Parking is available about 0.24 mi away at Arlington Street Lot. There is EV charging 0.41 mi from the office (Tesla Destination Charger) — useful if you are driving in from out of town. The nearest transit stop is 679 ft away, served by Arlington St @ Saint James Ave. A pharmacy sits 0.25 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 622 ft away.
Getting here and what is nearby
Restaurant Beatnic 170 ft ~1 min
399 Boylston Street, Boston 02116
Mo-Su 11:00-21:00
Coffee Tatte Bakery & Cafe 229 ft ~1 min
399 Boylston Street, Boston 02116
Mo-Fr 07:00-20:00; Sa 08:00-20:00; Su 08:00-19:00
Restaurant Life Alive 212 ft ~1 min
431 Boylston Street, Boston 02116
Mo-Fr 07:00-21:00; Sa-Su 10:00-21:00
Coffee Nero Express 241 ft ~1 min
443 Boylston Street, Boston 02116
Restaurant The Parish Cafe 280 ft ~2 min
Transit Boylston St @ Berkeley St 293 ft ~2 min
Pharmacy Capsule 307 ft ~2 min
414 Boylston Street, Boston 02116
Mo-Fr 09:00-18:00; Sa 11:00-15:00
Hotel The Newbury Boston 439 ft ~2 min
Parking 418 ft ~2 min
Grocery Trader Joe's 440 ft ~2 min
500 Boylston Street, Boston 02116
Mo-Su 09:00-21:00
Transit Saint James Ave @ Arlington St 659 ft ~3 min
Coffee Thinking Cup 622 ft ~3 min
85 Newbury Street, Boston 02116
Mo-Fr 07:00-19:00; Sa-Su 07:00-21:00
Transit Arlington St @ Saint James Ave 679 ft ~3 min
Parking Back Bay Garage 799 ft ~4 min
Hotel Hotel Aka 0.20 mi ~4 min
154 Berkeley Street, Boston 02116
Parking Arlington Street Lot 0.24 mi ~5 min
Pharmacy CVS Pharmacy 0.25 mi ~5 min
Convenience 7-Eleven 0.26 mi ~6 min
Hotel 140 Clarendon 0.26 mi ~6 min
140 Clarendon Street, Boston 02116
Convenience 7-Eleven 0.33 mi ~7 min
Grocery DeLuca's Market 0.35 mi ~7 min
EV charging 0.40 mi ~9 min
EV charging Tesla Destination Charger 0.41 mi ~9 min
Convenience The Wild Duck Market Place 0.42 mi ~9 min
Grocery Star Market 0.48 mi ~10 min
53 Huntington Avenue, Boston 02116
Mo-Su 07:00-23:00
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 |
|---|---|---|
| 3090 | MA | Registered Dietitian primary |
This provider holds licence 3090 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 | 1003357179 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 9, 2017 |
| Last updated | Mar 9, 2017 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RD, LDN, RYT |
| Practice address |
30 NEWBURY ST THIRD FLOOR Boston, MA 02116 (716) 200-3236 |
| Mailing address |
140 ARBORWAY UNIT 5 Jamaica Plain, MA 02130 |
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 | 3 | 5 | 7 | 1 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 5 | 5 | 1 | 5 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.