Dr Michael Neinast, DO - Medicare Internal Medicine in Orange, CA

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Dr Michael Neinast, DO is a medicare enrolled "Internal Medicine - Nephrology" physician in Orange, California. His current practice location is 101 The City Dr S, Orange, California. You can reach out to his office (for appointments etc.) via phone at (714) 456-8888.

Dr Michael Neinast is licensed to practice in California (license number 22603) and he also participates in the medicare program. He does not accept medicare assignments directly but he may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. His NPI Number is 1770105769.

Contact Information

Dr Michael Neinast, DO
101 The City Dr S,
Orange, CA 92868-3201
(714) 456-8888
Not Available

Map and Direction




Physician's Profile

Full NameDr Michael Neinast
GenderMale
SpecialityInternal Medicine - Nephrology
Location101 The City Dr S, Orange, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1770105769
  • Provider Enumeration Date: 05/12/2020
  • Last Update Date: 07/22/2026
  Medicare PECOS Information:
  • PECOS PAC ID: 5597189050
  • Enrollment ID: I20230512001722

Medical Identifiers

Medical identifiers for Dr Michael Neinast such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1770105769NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine 125075898 (Illinois)Secondary
207R00000XInternal Medicine 036.163604 (Illinois)Secondary
207RN0300XInternal Medicine - Nephrology 22603 (California)Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr Michael Neinast allows following entities to bill medicare on his behalf.
Entity NameSIU Physicians & Surgeons Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1558385989
PECOS PAC ID: 2365352820
Enrollment ID: O20031222000769
Entity NameBoard of Trustees of Southern Illinois University
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396097960
PECOS PAC ID: 4486667888
Enrollment ID: O20130424001019
Entity NameCarle West Physician Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1467074138
PECOS PAC ID: 8921420308
Enrollment ID: O20200613000147

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Michael Neinast is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr Michael Neinast, DO
101 The City Dr S,
Orange, CA 92868-3201

Ph: Not Available		Dr Michael Neinast, DO
101 The City Dr S,
Orange, CA 92868-3201

Ph: (714) 456-8888

Reviews and Comments


Internal Medicine Doctors in Orange, CA

Michael Cheng, DO
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7110    
Harry Nguyen, D.O.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7002    
Dr. Nicole Foley, M.D.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 200 S Manchester Ave Ste 400, Orange, CA 92868
Phone: 714-456-5153    
Millie Arora,
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, City Tower, Suite 400, Orange, CA 92868
Phone: 714-456-5691    Fax: 714-456-8874
Dr. Antonio Halais Frangieh, MD, MPH
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7890    
Mark E Wylam, M.D.
Nephrology
Medicare: Accepting Medicare Assignments
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-456-7890    
Dr. Jesse John Goitia Jr., M.D.
Nephrology
Medicare: Medicare Enrolled
Practice Location: 101 The City Dr S, Orange, CA 92868
Phone: 714-880-7812    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.