Elizabeth Holcomb, RN
Elizabeth Holcomb, RN is an Addiction (Substance Use Disorder) Registered Nurse in New Haven, CT, registered under NPI 1003102039.
Getting there
Here is what surrounds this office in New Haven, based on OpenStreetMap data collected Sep 5, 2026. Parking is available about 0.33 mi away. The nearest transit stop is 0.21 mi away, served by Boyer Center/Hope. A pharmacy sits 0.50 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.42 mi away.
Getting here and what is nearby
Parking Amistad Street Garage 445 ft ~2 min
10 Amistad Street, New Haven 06511
Transit Amistad/Cedar 522 ft ~2 min
Pharmacy Barney's Pharmacy 539 ft ~3 min
Convenience Columbus Market & Deli 820 ft ~4 min
Coffee Blue State Coffee 1,026 ft ~4 min
Transit Boyer Center/Hope 0.20 mi ~5 min
Transit Boyer Center/Hope 0.21 mi ~5 min
Parking Howard Avenue Garage 0.26 mi ~6 min
790 Howard Avenue, New Haven 06519
Convenience Congress Deli Mart 0.27 mi ~6 min
Convenience Congress Market 0.33 mi ~7 min
Parking 0.33 mi ~7 min
20 White Street, New Haven 06519
Restaurant Subway 0.33 mi ~7 min
Restaurant Dunkin' 0.34 mi ~7 min
Coffee Café George 0.42 mi ~9 min
Restaurant Chuan Du Hot Pot 0.42 mi ~9 min
27 Temple Street, New Haven 06510
Mo-Th 11:30-15:00,16:30-22:00; Fr-Sa 11:30-15:00,16:30-22:30; Su 12:00-22:00
Hotel New Haven Hotel 0.45 mi ~10 min
229 George Street, New Haven 06510
Hotel The Blake Hotel 0.48 mi ~10 min
Pharmacy Walgreens 0.50 mi ~10 min
88 York Street, 06511
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 |
|---|---|---|
| 87850 | CT | Addiction (Substance Use Disorder)… primary |
This provider holds licence 87850 issued in CT. 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 Addiction (Substance Use Disorder) covers
Definition to come... NUCC Health Care Provider Taxonomy, code 163WA0400X
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 | 1003102039 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 28, 2011 |
| Last updated | Jun 28, 2011 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | RN |
| Practice address |
232 CEDAR ST New Haven, CT 06519 (203) 503-3300 Fax (203) 781-0276 |
| Mailing address |
913 STATE ST New Haven, CT 06511 |
| Other identifiers |
004235900
· Medicaid (CT) 004235918 · Medicaid (CT) |
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 | 0 | 2 | 0 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 0 | 4 | 0 | 6 |
Sum = 41 · next multiple of 10 = 50 · 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.