Expertise in
33
conditions

Dr. Corey J. Lager

Endocrinology
Bronson Diabetes & Endocrinology Center-Portage
7901 S 12th St Ste 200, 
Portage, MI 
Clinical Trials:Currently Recruiting for 1 Trial
Accepting New Patients
Offers Telehealth
Referral required
Before you request
Expertise in
33
conditions
Bronson Diabetes & Endocrinology Center-Portage
7901 S 12th St Ste 200, 
Portage, MI 

Overview

Corey Lager is an Endocrinologist practicing medicine in Portage, Michigan.

Dr. Lager is highly rated in 33 conditions, according to our data. His clinical expertise encompasses Familial Isolated Hyperparathyroidism, Parathyroid Hyperplasia, Type 1 Diabetes (T1D), Gastric Bypass, and Sleeve Gastrectomy.

He is actively involved in clinical research, co-authoring 8 peer reviewed articles and participating in 2 clinical trials. Dr. Lager is currently accepting new patients.

Specialties

Endocrinology

Licenses

Internal Medicine in MI

Hospital Affiliations

Bronson Lakeview Hospital
Bronson Battle Creek Hospital
Bronson South Haven Hospital
Sturgis Hospital
Bronson Methodist Hospital

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
Capital Blue Cross
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • OTHER MEDICARE PART D
  • PPO
CareFirst
  • HMO
  • POS
  • PPO
CareSource
  • HMO
Celtic
  • HMO
  • INSURANCE PLAN
  • PPO
Change Healthcare
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Cigna
  • EPO
  • HMO
  • PPO
EmblemHealth
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE PART D
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Highmark
  • EPO
  • HMO
  • PPO
Horizon Healthcare
  • EPO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Kaiser Permanente
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER MEDICARE
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Meridian Choice
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Netcare Life And Health Insurance
  • OTHER COMMERCIAL
  • PPO
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
Priority Health
  • HMO
  • POS
Spectrum Priority Health
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
Trustmark
  • PPO
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
University of Michigan Health
  • HMO
  • INSURANCE PLAN
  • MEDICARE MAPD
Walgreens
  • MEDICARE DISCOUNT CARD
  • MEDICARE PDP
  • OTHER MEDICARE
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 25 Less Insurance Carriers -

Locations

Bronson Diabetes & Endocrinology Center-Portage
7901 S 12th St Ste 200, Portage, MI 49024

Additional Areas of Focus

Dr. Lager has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Hypoparathyroidism
Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

2 Clinical Trials

Prospective Multicenter Natural History Study of Lipodystrophy Syndromes to Determine Prevalence, Incidence and Predictors of Diabetes and Severe Hypertriglyceridemia, and Their Complications
Prospective Multicenter Natural History Study of Lipodystrophy Syndromes to Determine Prevalence, Incidence and Predictors of Diabetes and Severe Hypertriglyceridemia, and Their Complications
Enrollment Status: Recruiting
Publish Date: March 19, 2026
An Investigator-Initiated Open-Label, Randomized Study of Gemcabene in Adults With Familial Partial Lipodystrophy Disease (FPLD)
An Investigator-Initiated Open-Label, Randomized Study of Gemcabene in Adults With Familial Partial Lipodystrophy Disease (FPLD)
Enrollment Status: Completed
Publish Date: August 17, 2020
Intervention Type: Drug
Study Phase: Phase 1/Phase 2
View 1 Less Clinical Trial

8 Total Publications

Disseminated histoplasmosis presenting as primary adrenal insufficiency in an immunocompetent host in the United States: a case report.
Disseminated histoplasmosis presenting as primary adrenal insufficiency in an immunocompetent host in the United States: a case report.
Journal: BMC infectious diseases
Published: May 12, 2025
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Frequently Asked Questions about Dr. Corey J. Lager

How do I make an appointment with Dr. Corey J. Lager?

You can book an appointment with Dr. Corey J. Lager by calling their office at 269-341-8585. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Corey J. Lager a top-rated expert for Familial Isolated Hyperparathyroidism?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Corey J. Lager is classified as an Distinguished expert for Familial Isolated Hyperparathyroidism, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Corey J. Lager specialize in?

While Dr. Corey J. Lager is a Endocrinology, they have specific expertise in Familial Isolated Hyperparathyroidism, Parathyroid Hyperplasia, and Type 1 Diabetes (T1D). MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Endocrinology.

Does Dr. Corey J. Lager participate in research or clinical trials?

Yes. Dr. Corey J. Lager has published 8 articles and abstracts on conditions like Familial Isolated Hyperparathyroidism. You can view a list of Dr. Corey J. Lager's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Corey J. Lager accept my insurance?

Dr. Corey J. Lager accepts most major insurance plans, including Aetna and Anthem BCBS. We recommend calling the office directly at 269-341-8585 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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