Doctor profile · Federal record
Dr. Diana Sewell, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Student in an Organized Health Care Education/Training Program · Norwalk, CT
- NPI 1821247065
- Accepts Medicare
- MIPS 75.2 / 100 · 2023
- 21 yrs in practice
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
34 Maple St
Norwalk, CT 068503815
(203) 852-2000
Credentials & registration
- NPI registered
- September 2008 — 18 yrs on file
- Profile last updated
- January 25, 2017
- Year of graduation
- 2005 — 21 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- Connecticut #50154
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1821247065. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
484
Distinct HCPCS
5
Medicare allowed
$47,189
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 311 | 100 | $83 | |
99233 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | 82 | 48 | $125 | |
99238 |
Hospital discharge day management, 30 minutes or less | 39 | 39 | $85 | |
99239 |
Hospital discharge day management, more than 30 minutes | 29 | 28 | $121 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 23 | 23 | $182 |
In context: peer comparison
Among 20 peers in this city , average services per provider: 111. This provider delivers 4.4× the peer median.Frequently asked questions
What is Dr. Diana Sewell's medical specialty?
Dr. Diana Sewell practices Internal Medicine Physician in Norwalk, CT.
Where does Dr. Diana Sewell practice?
Dr. Diana Sewell practices at 34 Maple St, Norwalk, CT 068503815. Office phone: 2038522000.
What is Dr. Diana Sewell's NPI?
Dr. Diana Sewell's National Provider Identifier (NPI) is 1821247065, issued by NPPES.
Does Dr. Diana Sewell accept Medicare assignment?
Yes. Dr. Diana Sewell accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Diana Sewell commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Hospital discharge day management (HCPCS 99238). Source: CMS Medicare Physician & Other Practitioners file.