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MARK MATTHEW LANDRENEAU MD
NPI 1659646875
Psychiatry & Neurology - Neurology in New Haven, CT

Active since March 21, 2012PECOS EnrolledAccepts Medicare Assignment
285 NICOLL ST STE 104, NEW HAVEN, CT 06511(203) 606-2395 Get Directions Write a Review

NPPES record last updated: March 11, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Mar 11, 2026, Jul 23, 2019, May 10, 2017 (3 updates tracked since 2017).

About Mark Matthew Landreneau Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK MATTHEW LANDRENEAU MD (NPI 1659646875) is an individual neurology provider in New Haven, Connecticut, licensed in Connecticut (55629) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (2012).

NPPES Registry Identity

NPI1659646875
Entity TypeIndividualMale
Primary Taxonomy2084N0400X
Provider Legal NameMARK MATTHEW LANDRENEAUCredential: MD
Location Address285 NICOLL ST STE 104New Haven, CT 06511-2625
Mailing Address285 Nicoll St Apt 104New Haven, CT 06511-0925 · (203) 606-2395
Phone(203) 606-2395
Sole ProprietorNo
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 2012
Enumeration DateMarch 21, 2012
Last NPPES UpdateMarch 11, 20263 updates tracked since enumeration
NPPES CertifiedMarch 11, 2026
✔ NPI 1659646875 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians
Taxonomy Code2084N0400X
License✔ Licensed in CT · 55629
Definition
A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.
285 NICOLL ST STE 104, New Haven, CT 06511
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Other Identifiers 1

Medicaid008072418CT

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mark Matthew Landreneau Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID6305158809
PECOS Enrollment IDI20180626000175
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
112 services108 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
47 services34 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
23 services23 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06511 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.84 typical visit price
range $60.82 – $183.10
Typical copayment $34.71 (range $15.20 – $45.77)
Most-billed visit code 99204
Established Patient
$106.68 typical visit price
range $19.76 – $149.26
Typical copayment $26.67 (range $4.94 – $37.31)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CENTERED PLLC
Clinical Nurse Specialist (Psychiatric/Mental Health)
285 NICOLL ST STE 104
NEW HAVEN, CT 06511
South Central Connecticut Planning Region (203) 606-2395
ROBERT G KRAUSE APRN
Clinical Nurse Specialist (Psychiatric/Mental Health)
285 NICOLL ST STE 104
NEW HAVEN, CT 06511
South Central Connecticut Planning Region (203) 606-2395

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Landreneau's NPI number?

The NPI number for Mark Landreneau is 1659646875. It was assigned to this individual provider in the NPPES registry on March 21, 2012.

Where is Mark Landreneau located?

Mark Landreneau practices at 285 Nicoll St Ste 104, New Haven, CT 06511. The listed phone number is (203) 606-2395.

What is Mark Landreneau's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Is Mark Landreneau enrolled in Medicare?

Yes. Mark Landreneau is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Mark Landreneau was last updated on March 11, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.