Dr. Karen J. Chang-Chen
- Gender: Female
- Experience: 18 years
- Graduation year: 2003
- Sole propriator: No
- NPI: 1508916495
Dr. Karen J. Chang-Chen MD
Endocrinologist
She is located at 224 South Woods Mill Road Suite 480S in Chesterfield, MO 63017. Can help patients with the following: Abdominal Pain, Fever, Goiter, Heart Disease, Metabolic Syndrome, Obesity. Her National Provider Identifier (NPI) number is 1508916495. Appointment can be made via the phone number (636) 685-7744. She is affiliated with 1 practices and 1 hospitals.
Conditions treated
Dr. Karen J. Chang-Chen, being an endocrinologist, treats the following conditions. Please be advised that this list may not be complete. For the full list of conditions treated, consult directly with Dr. Karen J. Chang-Chen.
- Abdominal Pain
- Achondroplasia
- Acute Pain
- Addison's Disease
- Amyloidosis
- Anemia
- Arthritis
- Asthma
- Atherosclerosis
- Bladder Control
- Bone Loss
- Carcinoid Tumor
- Chest Pain
- Cholecystitis
- Chronic Obstructive Pulmonary Disease (COPD)
- Common Cold
- Constipation
- Cushing's Syndrome
- Cystitis
- Diabetes
- Diabetes Insipidus (DI)
- Diabetes Mellitus (DM) Type 1
- Diabetes Mellitus (DM) Type 2
- Diabetic Neuropathy
- Diarrhea
- Edema
- Fertility
- Fever
- Gastroesophageal Reflux Disease (GERD)
- General Care
- Goiter
- Graves' Disease
- Growth Hormone Imbalance
- Gynecomastia
- Headache
- Heart Disease
- Hiatal Hernia
- High Blood Pressure
- Hot Flashes
- Hypercalcemia
- Hyperglycemia
- Hyperlipidemia
- Hyperparathyroidism
- Hyperthyroidism
- Hypocalcemia
- Hypoglycemia
- Hyponatremia
- Hypoparathyroidism
- Hypothyroidism
- Influenza
- Inguinal Hernia
- Insulin Resistance (IR)
- Low Testosterone
- Metabolic Syndrome
- Migraine
- Nausea and Vomiting
- Obesity
- Osteoporosis
- Peptic Ulcer
- Prescription Refill
- Thyroid Cancer
- Thyroid Disease
- Thyroiditis
- Urethritis
- Urinary Tract Infection (UTI)
- Vitamin D Deficiency
- Wilson-Turner Syndrome
Procedures Performed by Dr. Karen J. Chang-Chen
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Karen J. Chang-Chen as in-network for the following 2026 plans.
Health plans
Anthem Blue Cross and Blue Shield
Network data as of Mar 26, 2026, as reported by the insurer.
Show all 10 plans from Anthem Blue Cross and Blue Shield
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Anthem Bronze Pathway 10150 ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Bronze | Participating | Accepting new patients |
| Anthem Bronze Pathway 6900 ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Expanded Bronze | Participating | Accepting new patients |
| Anthem Bronze Pathway 7500 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Expanded Bronze | Participating | Accepting new patients |
| Anthem Catastrophic Pathway (+ Incentives) | EPO · Catastrophic | Participating | Accepting new patients |
| Anthem Gold Pathway 2000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Gold | Participating | Accepting new patients |
| Anthem Heart Healthy Bronze Pathway 4900 ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Expanded Bronze | Participating | Accepting new patients |
| Anthem Heart Healthy Silver Pathway 3100 ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Silver | Participating | Accepting new patients |
| Anthem Silver Pathway 5350 ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Silver | Participating | Accepting new patients |
| Anthem Silver Pathway 6000 Standard ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Silver | Participating | Accepting new patients |
| Anthem Silver Pathway 7200 ($0 Virtual PCP + $0 Select Drugs + Incentives) | EPO · Silver | Participating | Accepting new patients |
Medica
Network data as of Aug 13, 2026, as reported by the insurer.
Show all 9 plans from Medica
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Medica with SSM Health Bronze $0 Copay PCP Visits | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with SSM Health Bronze Share | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with SSM Health Expanded Bronze Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Medica with SSM Health Gold $0 Copay PCP Visits | EPO · Gold | Preferred | Accepting new patients |
| Medica with SSM Health Gold Share | EPO · Gold | Preferred | Accepting new patients |
| Medica with SSM Health Gold Standard | EPO · Gold | Preferred | Accepting new patients |
| Medica with SSM Health Silver $0 Copay PCP Visits | EPO · Silver | Preferred | Accepting new patients |
| Medica with SSM Health Silver Share | EPO · Silver | Preferred | Accepting new patients |
| Medica with SSM Health Silver Standard | EPO · Silver | Preferred | Accepting new patients |
Oscar Insurance Company
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 11 plans from Oscar Insurance Company
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic 4700 | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Classic Standard | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Diabetes | EPO · Expanded Bronze | Preferred | Accepting new patients |
| Gold Classic Standard | EPO · Gold | Preferred | Accepting new patients |
| Gold Simple | EPO · Gold | Preferred | Accepting new patients |
| Silver Classic Standard | EPO · Silver | Preferred | Accepting new patients |
| Silver Elite Saver Plus | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | EPO · Silver | Preferred | Accepting new patients |
| Silver Simple Women's Health with Menopause Benefits | EPO · Silver | Preferred | Accepting new patients |
This covers ACA Marketplace plans only, as reported by each insurer. It does not include employer, Medicare Advantage, or state-run exchange plans, and a plan missing from this list does not mean Dr. Karen J. Chang-Chen is out of network. Insurer directories can be out of date, so always confirm with the insurer and the office before your visit.
Medicare Enrollment
Dr. Karen J. Chang-Chen is enrolled to bill Medicare as a Practitioner - Endocrinology .
Bills through: Endocrine Associates, Llc
Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Lilly | $73636 |
| Novo Nordisk | $651 |
| Janssen | $549 |
Other
| Promotional Speaking or Service | $60286 |
| Travel and Lodging | $7229 |
| Food and Beverage | $5482 |
| Consulting | $4225 |
Studies
Graduated in 2003Additional Specialities
- Internist
Looking for more Endocrinologists?
There are 6 other endocrinologists in this region.
- Gender: Female
- Address: Suite 410N 222 South Woods Mill Road Chesterfield, 63017, MO
- Gender: Male
- Address: 222 South Woods Mill Road Chesterfield, 63017, MO
- Gender: Male
- Address: Suite 500 South 224 South Woods Mill Road Chesterfield, 63017, MO
- Gender: Male
- Address: Suite 101 1585 Woodlake Drive Chesterfield, 63017, MO
- Gender: Female
- Address: 5500 Pinebrook Road Suite 101 North Venice, 34275, FL
- Gender: Male
- Address: Suite 410N 222 South Woods Mill Road Chesterfield, 63017, MO
Questions & Answers
Where can you meet with Dr. Karen J. Chang-Chen?
Dr. Karen J. Chang-Chen's office is located at 224 South Woods Mill Road Suite 480S in Chesterfield, MO 63017.
Does Dr. Karen J. Chang-Chen have affiliation with practices?
Dr. Karen J. Chang-Chen is affiliated with Endocrine Associates.
Does Dr. Karen J. Chang-Chen accept patients with Medica?
Yes, Dr. Karen J. Chang-Chen is listed in-network for Medica through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
Has Dr. Karen J. Chang-Chen affiliation with hospitals?
Dr. Karen J. Chang-Chen is affiliated with ST LUKES HOSPITAL.
What conditions does Dr. Karen J. Chang-Chen treat?
Dr. Karen J. Chang-Chen provides treatment for Abdominal Pain, Fever, Goiter, Heart Disease, Metabolic Syndrome, Obesity. For the full list see this list.