Dr. Ronald J. Sierzenski
- Gender: Male
- Experience: 24 years
- Graduated from: Jefferson Medical College Of Thomas Jefferson University
- Graduation year: 1997
- Sole propriator: No
- NPI: 1861428633
Dr. Ronald J. Sierzenski M.D.
Emergency Physician
He is located at 475 South Dobson Road in Chandler, AZ 85224. Can help patients with the following: Brain Aneurysm, Bruises, Choking, Common Cold, Decompression Sickness, Whiplash. His National Provider Identifier (NPI) number is 1861428633. Appointment can be made via the phone number (480) 963-4561. He is affiliated with 2 hospitals.
Conditions treated
Dr. Ronald Sierzenski, being an emergency physician, 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. Ronald J. Sierzenski.
- Acute Pain
- Altitude Sickness
- Angina
- Arterial Ulcers
- Bone Infections
- Brain Aneurysm
- Brain Hemorrhage
- Broken Bone
- Bruises
- Carbon Monoxide Poisoning
- Choking
- Common Cold
- Coronavirus
- Costochondritis
- Cyanide Poisoning
- Decompression Sickness
- Diabetic Ulcers
- Febrile Seizure
- Fever
- Frostbite
- Gas Gangrene
- General Care
- Headache
- Hematoma
- Influenza
- Insect Stings
- Laceration
- Migraine
- Nausea and Vomiting
- Phlebitis and Thrombophlebitis
- Pressure Ulcers
- Skin Grafts
- Smoke Inhalation
- Soft Tissue Ulcers
- Surgical Wounds
- Venous Stasis Ulcers
- Whiplash
Procedures Performed by Dr. Ronald J. Sierzenski
ACA Marketplace (Obamacare/HealthCare.gov) plan networks
Insurers selling ACA Marketplace (HealthCare.gov) plans list Dr. Ronald J. Sierzenski as in-network for the following 2026 plans.
Health plans
Oscar Health Plan, Inc.
Network data as of Sep 15, 2026, as reported by the insurer.
Show all 17 plans from Oscar Health Plan, Inc.
| Plan | Plan type | Network tier | New patients |
|---|---|---|---|
| Bronze Classic Standard | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Elite + PCP Saver Plus | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Breathe Easy with Enhanced COPD Benefits | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Bronze Simple Chronic Care CKM | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Buena Salud Bronce Simple Para Diabetes | HMO · Expanded Bronze | Preferred | Accepting new patients |
| Gold Classic | HMO · Gold | Preferred | Accepting new patients |
| Gold Classic Standard | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple | HMO · Gold | Preferred | Accepting new patients |
| Gold Simple Diabetes | HMO · Gold | Preferred | Accepting new patients |
| Silver Classic Standard | HMO · Silver | Preferred | Accepting new patients |
| Silver Elite Saver Plus | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Chronic Care CKM | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Diabetes | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple PCP Saver | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Specialist Saver with COPD | HMO · Silver | Preferred | Accepting new patients |
| Silver Simple Women's Health with Menopause Benefits | HMO · 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. Ronald J. Sierzenski 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. Ronald J. Sierzenski is enrolled to bill Medicare as a Practitioner - Emergency Medicine .
Bills through: Chandler Emergency Medical Group Llc
Based on Medicare's public enrollment records as of Sep 29, 2026. This reflects Medicare fee-for-service enrollment only and says nothing about other insurance, quality, outcomes, or board certification.
Payments received
Drug payment
| Medtronic | $125 |
| Edwards Lifesciences | $108 |
| Otsuka Pharmaceutical | $100 |
Other
| Food and Beverage | $334 |
Studies
JEFFERSON MEDICAL COLLEGE OF THOMAS JEFFERSON UNIVERSITY
Graduated in 1997Additional Specialities
- Undersea and Hyperbaric Medicine Specialist
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Questions & Answers
Does Dr. Ronald Sierzenski accept patients with Oscar Health Plan, Inc.?
Yes, Dr. Ronald Sierzenski is listed in-network for Oscar Health Plan, Inc. through the ACA Marketplace (Obamacare/HealthCare.gov). See the Marketplace plans section for details.
What conditions does Dr. Ronald Sierzenski treat?
Dr. Ronald Sierzenski provides treatment for Brain Aneurysm, Bruises, Choking, Common Cold, Decompression Sickness, Whiplash. For the full list see this list.
Where can you meet with Dr. Ronald Sierzenski?
Dr. Ronald Sierzenski's office is located at 475 South Dobson Road in Chandler, AZ 85224.
Has Dr. Ronald Sierzenski affiliation with hospitals?
Dr. Ronald Sierzenski is affiliated with MERCY GILBERT MEDICAL CENTER. For the full list of hospitals see this list.