ON CALL URGENT CARE LLC
ON CALL URGENT CARE LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003195959, based in Northampton, MA. It is classified under Addiction Medicine (Internal Medicine) Physician.
Getting there
Here is what surrounds this office in Northampton, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 0.39 mi away. The nearest transit stop is 0.45 mi away, served by Bridge / Dogwood.
Getting here and what is nearby
Transit LOCUST / PROSPECT 264 ft ~2 min
Parking 261 ft ~1 min
Transit LOCUST / PROSPECT 299 ft ~2 min
Convenience Zee-Mart 391 ft ~2 min
15 Locust Street, Northampton 01060
Mo-Su 05:00-23:00
Parking 443 ft ~2 min
Parking 0.39 mi ~8 min
185 Locust Street, Northampton 01060
Transit Bridge / Dogwood 0.45 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
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 Addiction Medicine covers
An internist doctor of osteopathy that specializes in the treatment of addiction disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Added Qualifications in the field of Addiction Medicine. NUCC Health Care Provider Taxonomy, code 207RA0401X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003195959 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Aug 10, 2011 |
| Last updated | Sep 5, 2023 |
| Status | Active |
| Practice address |
51 LOCUST ST Northampton, MA 01060 (413) 584-7425 Fax (413) 584-7440 |
| Mailing address |
4 OPEN SQUARE WAY SUITE 416 Holyoke, MA 01040 |
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 | 1 | 9 | 5 | 9 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 9 | 1 | 9 | 1 |
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.