Doctor profile · Federal record
Dr. Mark Landreneau, MD
Neurology Physician (CMS: Neurology) · New Haven, CT
- NPI 1659646875
- Accepts Medicare
- 14 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
285 Nicoll St Ste 104
New Haven, CT 065112625
(203) 606-2395 - Mailing address
-
285 Nicoll St Apt 104
New Haven, CT 065110925
Credentials & registration
- NPI registered
- March 2012 — 14 yrs on file
- Profile last updated
- March 11, 2026
- Year of graduation
- 2012 — 14 yrs since
- Specialty taxonomy
- 2084N0400X — NUCC code
- State license (1)
- Connecticut #55629
- Medicaid
- CT #008072418
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1659646875. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
194
Distinct HCPCS
4
Medicare allowed
$23,469
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99222 |
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 63 | 62 | $135 | |
99221 |
Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | 49 | 48 | $86 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 41 | 40 | $180 | |
99232 |
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 41 | 33 | $82 |
In context: peer comparison
Among 28 peers in New Haven Neurology Physician, average services per provider: 52. This provider delivers 3.7× the peer median.Frequently asked questions
What is Dr. Mark Landreneau's medical specialty?
Dr. Mark Landreneau practices Neurology Physician in New Haven, CT.
Where does Dr. Mark Landreneau practice?
Dr. Mark Landreneau practices at 285 Nicoll St Ste 104, New Haven, CT 065112625. Office phone: 2036062395.
What is Dr. Mark Landreneau's NPI?
Dr. Mark Landreneau's National Provider Identifier (NPI) is 1659646875, issued by NPPES.
Does Dr. Mark Landreneau accept Medicare assignment?
Yes. Dr. Mark Landreneau accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Mark Landreneau commonly perform?
Top Medicare-reported procedures in 2023: Initial hospital care with straightforward or low-level medical decision making (HCPCS 99222); Initial hospital care with straightforward or low level of medical decision making (HCPCS 99221); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.