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DR. FIONA CATHERINE MARLOW M.D.
NPI 1194392894
Internal Medicine in Ansonia, CT

Active since June 10, 2021PECOS Enrolled
121 WAKELEE AVE, ANSONIA, CT 06401(203) 503-3000 Get Directions Write a Review

NPPES record last updated: April 3, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Apr 3, 2025, Mar 15, 2023, Jun 10, 2021 (3 updates tracked since 2021).

About Dr. Fiona Catherine Marlow M.d. NPPES

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

DR. FIONA CATHERINE MARLOW M.D. (NPI 1194392894) is an individual internal medicine provider in Ansonia, Connecticut, licensed in Connecticut (80530) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1194392894
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. FIONA CATHERINE MARLOWCredential: M.D.
Location Address121 WAKELEE AVEAnsonia, CT 06401-1151
Mailing Address121 Wakelee AveAnsonia, CT 06401-1151 · (203) 440-7449
Phone(203) 503-3000
Sole ProprietorNo
Enumeration DateJune 10, 2021
Last NPPES UpdateApril 3, 20253 updates tracked since enumeration
NPPES CertifiedApril 3, 2025
✔ NPI 1194392894 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CT · 80530
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
121 WAKELEE AVE, Ansonia, CT 06401
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Fiona Catherine Marlow M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Fiona Marlow reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Cornell Scott Hill Health Corporation
8.4 mi
Federally Qualified Health Center (FQHC)
400-428 COLUMBUS AVENUE
New Haven, CT 06519
  • Reassigned Medicare billing, Connecticut enrollment
  • 468 clinicians in this Medicare group
NPI 1902921380 (203) 503-3000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06401 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 20

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

UNITY HOME HEALTH CARE. LLC
Home Health
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 734-4200
MALENA CONTE LPC
Counselor (Professional)
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 503-3000
LAUREN M HICKSON LPC
Counselor (Professional)
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 503-3650
NICOLE COMMERCIO
Counselor
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 503-3650
PATRICK STONE LPC
Counselor (Professional)
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 503-3000
ERIN JOAN SHAFFNER LPC
Counselor
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 503-3000
ROSIE LAURENT LCSW
Social Worker (Clinical)
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 503-3650
SHELIA MCLAUGHLIN
Counselor
121 WAKELEE AVE
ANSONIA, CT 06401
Naugatuck Valley Planning Region (203) 503-3650

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 Fiona Marlow's NPI number?

The NPI number for Fiona Marlow is 1194392894. It was assigned to this individual provider in the NPPES registry on June 10, 2021.

Where is Fiona Marlow located?

Fiona Marlow practices at 121 Wakelee Ave, Ansonia, CT 06401. The listed phone number is (203) 503-3000.

What is Fiona Marlow's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Fiona Marlow enrolled in Medicare?

Yes. Fiona Marlow is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Fiona Marlow's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Fiona Marlow reassigns Medicare benefits to Cornell Scott Hill Health Corporation (New Haven, CT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Fiona Marlow's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Fiona Marlow accept?

Health plans from Anthem Blue Cross and Blue Shield list Fiona Marlow as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Fiona Marlow was last updated on April 3, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.