Julie Mercer
Julie Mercer is a Registered Nurse in Cambridge, MA, registered under NPI 1003386731. 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 Cambridge, based on OpenStreetMap data collected Sep 13, 2026. Parking is available about 0.41 mi away. There is EV charging 0.43 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 441 ft away, served by Beacon St @ Cooney St. A pharmacy sits 0.21 mi from the entrance (Skendarian Apothecary), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.32 mi away.
Getting here and what is nearby
Transit Cambridge St @ Camelia Ave 335 ft ~2 min
Transit Cambridge St @ Highland Ave 388 ft ~2 min
Transit Beacon St @ Cooney St 441 ft ~2 min
Restaurant Tall Order 444 ft ~2 min
Parking 507 ft ~2 min
Grocery Whole Foods Market 540 ft ~3 min
45 Beacon Street, Somerville 02143
Mo-Su 08:00-22:00
Pharmacy Walgreens 584 ft ~3 min
Restaurant Thai Hut 758 ft ~3 min
Pharmacy Inman Pharmacy 0.20 mi ~4 min
1414 Cambridge Street, Cambridge 02139
Mo-Fr 08:30-19:00; Sa 09:00-17:30; Su 09:00-15:00
Restaurant Moona 0.20 mi ~5 min
Pharmacy Skendarian Apothecary 0.21 mi ~5 min
1613 Cambridge Street, Cambridge 02138
Mo-Fr 08:00-18:00; Sa 09:00-14:00; Su 09:00-13:00
Coffee Broadsheet Coffee Roasters 0.23 mi ~5 min
Convenience Harvard Market 0.23 mi ~5 min
1627 Cambridge Street, Cambridge 02138
Mo-Fr 07:00-19:00; Sa 08:00-19:00
Coffee 1369 Coffee House 0.24 mi ~5 min
1369 Cambridge Street, Cambridge 02139
Mo-Fr 07:00-15:00; Sa-Su 08:00-16:00
Convenience Friendly Market 0.29 mi ~6 min
69;71 Springfield Street
Hotel Irving House 0.30 mi ~7 min
Coffee Barismo 0.32 mi ~7 min
Convenience 7-Eleven 0.34 mi ~7 min
Gas station Shell 0.34 mi ~7 min
287 Prospect Street, Cambridge 02139
Grocery Tropical Dimension Food Store 0.34 mi ~7 min
1262 Cambridge Street, Cambridge
Hotel The Amory Guest House 0.35 mi ~8 min
EV charging ChargePoint 0.38 mi ~8 min
Parking Broadway Garage 0.41 mi ~9 min
5 Felton Street
Parking 0.41 mi ~9 min
24 Dane Street, Somerville 02143
Grocery Market Basket 0.42 mi ~9 min
400 Somerville Avenue, Somerville 02143
Mo-Sa 07:00-21:00; Su 07:00-20:00
EV charging 0.43 mi ~9 min
Gas station Broadway Gas 0.44 mi ~9 min
320;322 Broadway
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 |
|---|---|---|
| RN622408 | MA | Registered Nurse primary |
This provider holds licence RN622408 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 Registered Nurse covers
(1) A registered nurse is a person qualified by graduation from an accredited nursing school (depending upon schooling, a registered nurse may receive either a diploma from a hospital program, an associate degree in nursing (A.D.N.) or a Bachelor of Science degree in nursing (B.S.N.), who is licensed or certified by the state, and is practicing within the scope of that license or certification. R.N.'s assist patient in recovering and maintaining their physical or mental health. They assist physicians during treatments and examinations and administer medications. (2) A provider who is trained and educated in a formal nursing education program at an accredited school of nursing, passes a national certification examination, and is licensed by the state to practice nursing. The individual provides nursing services to patients or clients in areas such as health promotion, disease prevention, acute and chronic care and restoration and maintenance of health across the life span. NUCC Health Care Provider Taxonomy, code 163W00000X
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 | 1003386731 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 26, 2018 |
| Last updated | Nov 26, 2018 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
1493 CAMBRIDGE ST Cambridge, MA 02139 (617) 591-4212 |
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 | 8 | 6 | 7 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 8 | 3 | 7 | 6 |
Sum = 59 · next multiple of 10 = 60 · check digit = 1 · actual last digit = 1
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.