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MARY LOUISE KERWIN DO
NPI 1003490814
Psychiatry & Neurology - Psychiatry in Jupiter, FL

Active since May 07, 2021PECOS EnrolledAccepts Medicare Assignment
110 FRONT ST, SUITE 300, INTERNAL SUITE 360, JUPITER, FL 33477(561) 379-4232 Get Directions Write a Review

NPPES record last updated: January 29, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 29, 2026, Aug 2, 2024, Oct 17, 2023 and 1 more (4 updates tracked since 2021).

About Mary Louise Kerwin Do NPPES

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

MARY LOUISE KERWIN DO (NPI 1003490814) is an individual psychiatry provider in Jupiter, Florida, licensed in Florida (OS20674) and active in the NPI registry since May 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1003490814
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameMARY LOUISE KERWINCredential: DO
Location Address110 FRONT ST, SUITE 300, INTERNAL SUITE 360Jupiter, FL 33477-5095
Mailing Address110 Front St, Suite 300, Internal Suite 360Jupiter, FL 33477-5095 · (561) 379-4232
Phone(561) 379-4232
Sole ProprietorNo
Medical School CMSOtherGraduated 2020
Enumeration DateMay 7, 2021
Last NPPES UpdateJanuary 29, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 29, 2026
✔ NPI 1003490814 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in FL · OS20674
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
110 FRONT ST, Jupiter, FL 33477
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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

Mary Louise Kerwin Do 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 ID4385183896
PECOS Enrollment IDI20240828003712, I20260114001528
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 33477 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
$179.05 typical visit price
range $58.56 – $179.05
Typical copayment $44.76 (range $14.64 – $44.76)
Most-billed visit code 99205
Established Patient
$73.00 typical visit price
range $18.44 – $144.68
Typical copayment $18.25 (range $4.61 – $36.17)
Most-billed visit code 99213
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

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

DR. JOSE G BARREAU M.D.
Internal Medicine (Hematology & Oncology)
110 FRONT ST
JUPITER, FL 33477
Palm Beach County (561) 839-9653

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 Mary Kerwin's NPI number?

The NPI number for Mary Kerwin is 1003490814. It was assigned to this individual provider in the NPPES registry on May 7, 2021.

Where is Mary Kerwin located?

Mary Kerwin practices at 110 Front St Suite 300, Internal Suite 360, Jupiter, FL 33477. The listed phone number is (561) 379-4232.

What is Mary Kerwin's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Mary Kerwin enrolled in Medicare?

Yes. Mary Kerwin 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 Mary Kerwin was last updated on January 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.