Doctor profile · Federal record
Dr. Zack Williams, MD
Internal Medicine Physician · New Britain, CT
- NPI 1861831505
- 13 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
100 Grand St
New Britain, CT 060522016
(860) 224-5661
fax (860) 224-5785
Credentials & registration
- NPI registered
- June 2013 — 13 yrs on file
- Profile last updated
- December 20, 2021
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Connecticut #55414
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1861831505. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
472
Distinct HCPCS
3
Medicare allowed
$62,004
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 300 | 113 | $123 | |
99239 |
Hospital discharge day management, more than 30 minutes | 97 | 93 | $119 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 75 | 71 | $180 |
In context: peer comparison
Among 25 peers in this city , average services per provider: 100. This provider delivers 4.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
69
Patients
54
Total drug cost
$423
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Prednisone | Generic | 23 | 20 | $177 |
| Ciprofloxacin Hcl | Generic | 19 | 18 | $106 |
| Azithromycin | Generic | 16 | 16 | $88 |
| Metoprolol Tartrate | Generic | 11 | 0 | $52 |
Frequently asked questions
What is Dr. Zack Williams's medical specialty?
Dr. Zack Williams practices Internal Medicine Physician in New Britain, CT.
Where does Dr. Zack Williams practice?
Dr. Zack Williams practices at 100 Grand St, New Britain, CT 060522016. Office phone: 8602245661.
What is Dr. Zack Williams's NPI?
Dr. Zack Williams's National Provider Identifier (NPI) is 1861831505, issued by NPPES.
What procedures does Dr. Zack Williams commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99239); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.