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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

CORTNEY ESSAK MD
NPI 1437778446
Internal Medicine - Hematology & Oncology in Livonia, MI

Active since April 09, 2020PECOS Enrolled
36475 FIVE MILE RD, LIVONIA, MI 48154(734) 655-4800 Get Directions Write a Review

NPPES record last updated: July 6, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 6, 2026, Apr 9, 2020 (2 updates tracked since 2020).

About Cortney Essak Md NPPES

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

CORTNEY ESSAK MD (NPI 1437778446) is an individual hematology & oncology provider in Livonia, Michigan, licensed in Michigan (4301518446) and active in the NPI registry since April 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1437778446
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameCORTNEY ESSAKCredential: MD
Location Address36475 FIVE MILE RDLivonia, MI 48154-1971
Mailing Address36475 Five Mile RdLivonia, MI 48154-1971
Phone(734) 655-4800
Sole ProprietorNo
Enumeration DateApril 9, 2020
Last NPPES UpdateJuly 6, 20262 updates tracked since enumeration
NPPES CertifiedJuly 6, 2026
✔ NPI 1437778446 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in MI · 4301518446
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
36475 FIVE MILE RD, Livonia, MI 48154
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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)

Cortney Essak Md 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 48154 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
$177.36 typical visit price
range $58.04 – $177.36
Typical copayment $44.34 (range $14.51 – $44.34)
Most-billed visit code 99205
Established Patient
$102.35 typical visit price
range $18.32 – $143.49
Typical copayment $25.58 (range $4.58 – $35.87)
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.

MS. ANDREA NICOLE YURCAK PA-C
Physician Assistant
36475 FIVE MILE RD
LIVONIA, MI 48154
Wayne County (734) 655-1230
ST MARY MERCY HOSPITAL
Health Educator
36475 FIVE MILE RD
LIVONIA, MI 48154
Wayne County (734) 655-4800
SAIF MAZIN FINDAKLY
Pharmacist
36475 FIVE MILE RD
LIVONIA, MI 48154
Wayne County (734) 655-4800
NICOLE TRUBLOWSKI CRNA
Nurse Anesthetist, Certified Registered
36475 FIVE MILE RD
LIVONIA, MI 48154
Wayne County (734) 786-2317
RACHEL M SAWICKI
Speech-Language Pathologist
36475 FIVE MILE RD
LIVONIA, MI 48154
Wayne County (734) 655-2955
DR. ANIRBAN NAYAK M.D.
Student in an Organized Health Care Education/Training Program
36475 FIVE MILE RD
LIVONIA, MI 48154
Wayne County (734) 655-2727
NAVJIT SINGH GIRGLA
Student in an Organized Health Care Education/Training Program
36475 FIVE MILE RD
LIVONIA, MI 48154
Wayne County (734) 655-4800
OLGA YAEKOUB M.D.
Student in an Organized Health Care Education/Training Program
36475 FIVE MILE RD, ST. MARY MERCY HOSPITAL
LIVONIA, MI 48154
Wayne County (734) 655-2727

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 Cortney Essak's NPI number?

The NPI number for Cortney Essak is 1437778446. It was assigned to this individual provider in the NPPES registry on April 9, 2020.

Where is Cortney Essak located?

Cortney Essak practices at 36475 Five Mile Rd, Livonia, MI 48154. The listed phone number is (734) 655-4800.

What is Cortney Essak's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Cortney Essak enrolled in Medicare?

Yes. Cortney Essak is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Cortney Essak was last updated on July 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 49 days 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.