Oscar A Gerdner, MD - Medicare Psychiatry & Neurology in Darien, CT

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Oscar A Gerdner, MD is a medicare enrolled "Psychiatry & Neurology - Child & Adolescent Psychiatry" physician in Darien, Connecticut. His current practice location is 30 Old Kings Hwy S, Darien, Connecticut. You can reach out to his office (for appointments etc.) via phone at (203) 349-8037.

Oscar A Gerdner is licensed to practice in Connecticut (license number 60001) 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 1801209952.

Contact Information

Oscar A Gerdner, MD
30 Old Kings Hwy S,
Darien, CT 06820-4551
(203) 349-8037
(888) 751-6612

Map and Direction




Physician's Profile

Full NameOscar A Gerdner
GenderMale
SpecialityPsychiatry & Neurology - Child & Adolescent Psychiatry
Location30 Old Kings Hwy S, Darien, Connecticut
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1801209952
  • Provider Enumeration Date: 06/06/2014
  • Last Update Date: 05/31/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 7810115094
  • Enrollment ID: I20140829001616

Medical Identifiers

Medical identifiers for Oscar A Gerdner such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1801209952NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0804XPsychiatry & Neurology - Child & Adolescent Psychiatry 60001 (Connecticut)Primary

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. Oscar A Gerdner 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
Oscar A Gerdner, MD
30 Old Kings Hwy S,
Darien, CT 06820-4551

Ph: (203) 349-8037		Oscar A Gerdner, MD
30 Old Kings Hwy S,
Darien, CT 06820-4551

Ph: (203) 349-8037

Reviews and Comments


Psychiatry & Neurology Doctors in Darien, CT

Ann M Callahan, MD
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Leo I Chaikovsky, MD
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Victor Patin, MD
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Phone: 203-655-1559    Fax: 203-655-1914
Louis Trevisan, MD
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Medicare: Medicare Enrolled
Practice Location: 17 Old Kings Hwy S, Suite 1-2, Darien, CT 06820
Phone: 203-655-1559    Fax: 203-655-1914

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.