David Altszuler, MD
David Altszuler, MD is a Cardiovascular Disease Physician in Hartford, CT, registered under NPI 1003177965.
Getting there
Here is what surrounds this office in Hartford, based on OpenStreetMap data collected Sep 2, 2026. Parking is available about 0.26 mi away. The nearest transit stop is 0.39 mi away.
Getting here and what is nearby
Parking 23 ft ~1 min
85 Seymour Street, Hartford 06106
Parking 460 ft ~2 min
80 Seymour Street, Hartford 06106
Restaurant McDonald's 1,022 ft ~4 min
172 Washington Street, Hartford 06106
Mo-Su 07:00-21:00
Parking 0.26 mi ~6 min
500 Hudson Street, Hartford 06106
Restaurant Aqui Me Quedo Restaurant 0.37 mi ~8 min
Grocery Viva Mexico Grocery Store 0.37 mi ~8 min
Convenience Angel Grocery Smoke Shop 0.38 mi ~8 min
636 Park Street, Hartford 06106
Restaurant Broasterant 0.38 mi ~8 min
Transit 0.39 mi ~8 min
Convenience Noble 0.45 mi ~10 min
Gas station Noble Gas + EV 0.45 mi ~9 min
Grocery C-Town 0.45 mi ~9 min
165 Wethersfield Avenue, Hartford 06114
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 |
|---|---|---|
| 62499 | CT | Cardiovascular Disease Physician primary |
This provider holds licence 62499 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 - Cardiovascular Disease (cardiology)
- PAC ID
- 1456685411
- Enrollment ID
- I20190625001097
Medicare enrolment is recorded as approved under the provider type Practitioner - Cardiovascular Disease (cardiology). 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 Cardiovascular Disease covers
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms. NUCC Health Care Provider Taxonomy, code 207RC0000X
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 | 1003177965 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 6, 2012 |
| Last updated | Aug 16, 2019 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MD |
| Practice address |
85 SEYMOUR ST STE 719 Hartford, CT 06106 (860) 522-0604 Fax (860) 522-0604 |
| Mailing address |
1062 BARNES RD STE 300 Wallingford, CT 06492 |
| Other identifiers |
008087874
· 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 | 7 | 7 | 9 | 6 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 7 | 5 | 9 | 3 |
Sum = 55 · next multiple of 10 = 60 · check digit = 5 · actual last digit = 5
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.