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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. MARION ELIZABETH DEERHAKE MD, PHD
NPI 1437892874
Psychiatry & Neurology - Neurology in New Haven, CT

Active since April 14, 2022PECOS Enrolled
20 YORK ST, NEW HAVEN, CT 06510(203) 688-4242 Get Directions Write a Review

NPPES record last updated: July 14, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 14, 2026, Apr 14, 2022 (2 updates tracked since 2022).

About Dr. Marion Elizabeth Deerhake Md, Phd NPPES

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

DR. MARION ELIZABETH DEERHAKE MD, PHD (NPI 1437892874) is an individual neurology provider in New Haven, Connecticut, licensed in Connecticut (84087) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437892874
Entity TypeIndividualFemale
Primary Taxonomy2084N0400X
Provider Legal NameDR. MARION ELIZABETH DEERHAKECredential: MD, PHD
Location Address20 YORK STNew Haven, CT 06510-3220
Mailing Address20 York StNew Haven, CT 06510-3220 · (203) 688-4242
Phone(203) 688-4242
Sole ProprietorNo
Enumeration DateApril 14, 2022
Last NPPES UpdateJuly 14, 20262 updates tracked since enumeration
NPPES CertifiedJuly 14, 2026
✔ NPI 1437892874 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 · 84087
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.

20 YORK ST, New Haven, CT 06510
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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 (PECOS)

Dr. Marion Elizabeth Deerhake Md, Phd 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 06510 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.

AUDREY P SENIOR APRN
Nurse Practitioner (Family)
20 YORK ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-5860
DR. YEISID F FIGUEREDO M.D.
Pediatrics (Neonatal-Perinatal Medicine)
20 YORK ST, DEPT OF NEONATOLOGY
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-2320
YALE NEW HAVEN HOSPITAL
Durable Medical Equipment & Medical Supplies (Customized Equipment)
20 YORK ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-2046
TAYLOR KINGSTON
Dietitian, Registered
20 YORK ST, FOOD AND NUTRITION EPB806
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-9185
DR. TRAVIS DANIEL BONTRAGER MD
Hospitalist
20 YORK ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-1734
NEEHARIKA THOTTEMPUDI MBBS
Psychiatry & Neurology (Neurology)
20 YORK ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242
TERESA JOSEPH D.O.
Internal Medicine (Nephrology)
20 YORK ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 737-8894
MR. BRAD ST. MARTIN MD
Obstetrics & Gynecology
20 YORK ST
NEW HAVEN, CT 06510
South Central Connecticut Planning Region (203) 688-4242

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 Marion Deerhake's NPI number?

The NPI number for Marion Deerhake is 1437892874. It was assigned to this individual provider in the NPPES registry on April 14, 2022.

Where is Marion Deerhake located?

Marion Deerhake practices at 20 York St, New Haven, CT 06510. The listed phone number is (203) 688-4242.

What is Marion Deerhake's specialty?

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

Is Marion Deerhake enrolled in Medicare?

Yes. Marion Deerhake is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Marion Deerhake was last updated on July 14, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.