Matthew Mcconnell, M.D.
Matthew Mcconnell, M.D. is a Gastroenterology Physician in New Haven, CT, registered under NPI 1003182023. 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 New Haven, based on OpenStreetMap data collected Aug 31, 2026. Parking is available about 0.23 mi away at Amistad Street Garage. There is EV charging 0.36 mi from the office — useful if you are driving in from out of town. The nearest transit stop is 397 ft away, served by Boyer Center/Hope. A pharmacy sits 0.46 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.35 mi away.
Getting here and what is nearby
Transit 333 Cedar 262 ft ~1 min
Transit Boyer Center/Hope 375 ft ~2 min
Transit Boyer Center/Hope 397 ft ~2 min
Restaurant Dunkin' 772 ft ~3 min
51 York Street, New Haven 06511
Mo-Fr 04:30-18:00; Sa-Su 04:30-17:00
Restaurant Subway 808 ft ~4 min
66 York Street, New Haven 06511
Mo-Sa 10:00-22:00; Su 11:00-21:00
Convenience Sam's Food 833 ft ~4 min
Parking Howard Avenue Garage 907 ft ~4 min
790 Howard Avenue, New Haven 06519
Parking Temple Medical Garage 0.20 mi ~4 min
Pharmacy Walgreens 0.22 mi ~5 min
88 York Street, 06511
Restaurant Bonchon Chicken 0.22 mi ~5 min
170 College Street, New Haven 06510
Mo-Th 11:00-22:00, Fr-Sa 11:00-22:00, Su 11:00-22:00
Parking Amistad Street Garage 0.23 mi ~5 min
10 Amistad Street, New Haven 06511
Hotel New Haven Hotel 0.24 mi ~5 min
229 George Street, New Haven 06510
Coffee Prince Tea House 0.27 mi ~6 min
Coffee Midpoint 0.27 mi ~6 min
248 Crown Street, New Haven 06511
Mo,We,Th 08:00-21:00; Fr,Sa 08:00-23:00; Su 08:00-20:00
Convenience College Convenience 0.34 mi ~7 min
258 College Street, New Haven 06510
Coffee B.Natural 0.35 mi ~7 min
EV charging 0.36 mi ~8 min
Convenience COOK 2GO 0.36 mi ~8 min
1064 Chapel Street, New Haven 06510
Mo-Fr 07:00-00:00; Sa 07:00-01:00; Su 07:00-19:00
Hotel Omni New Haven Hotel at Yale 0.36 mi ~8 min
Pharmacy Rite Aid 0.36 mi ~8 min
Mo-Fr 08:00-20:00; Sa,Su 09:00-21:00
Hotel Graduate by Hilton New Haven 0.41 mi ~9 min
Pharmacy CVS Pharmacy 0.46 mi ~10 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 |
|---|---|---|
| 61439 | CT | Gastroenterology Physician primary |
This provider holds licence 61439 issued in CT. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Gastroenterology
- PAC ID
- 9436394533
- Enrollment ID
- I20180803001371
Medicare enrolment is recorded as approved under the provider type Practitioner - Gastroenterology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Gastroenterology covers
An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs. NUCC Health Care Provider Taxonomy, code 207RG0100X
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 | 1003182023 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 23, 2012 |
| Last updated | Aug 17, 2018 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | M.D. |
| Practice address |
333 CEDAR ST YNHH INTERNAL MEDICINE-GI,SECTION OF DIGESTIVE DISEASES New Haven, CT 06510 (203) 785-7012 |
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 | 8 | 2 | 0 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 8 | 4 | 0 | 4 |
Sum = 47 · next multiple of 10 = 50 · check digit = 3 · actual last digit = 3
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.