Dr John Christian Oneil, MD - General Practice in Calistoga, CA

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Dr John Christian Oneil, MD is a General Practice physician based in Calistoga, California. Dr John Christian Oneil is licensed to practice in California (license number A118663) and his current practice location is 3076 Myrtledale Rd, Calistoga, California. He can be reached at his office (for appointments etc.) via phone at (707) 942-6888.

NPI number for Dr John Christian Oneil is 1952573826 and his current mailing address is Po Box 1793, Middletown, California. He does not participate in medicare program and thus does not accept medicare assignments. His NPI Number is 1952573826.

Contact Information

Dr John Christian Oneil, MD
3076 Myrtledale Rd,
Calistoga, CA 94515-1052
(707) 942-6888
Not Available

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Physician's Profile

Full NameDr John Christian Oneil
GenderMale
SpecialityGeneral Practice
Location3076 Myrtledale Rd, Calistoga, California
Accepts Medicare AssignmentsDoes not participate in Medicare Program. He may not accept medicare assignment.
  NPI Data:
  • NPI Number: 1952573826
  • Provider Enumeration Date: 03/31/2008
  • Last Update Date: 07/02/2026

Medical Identifiers

Medical identifiers for Dr John Christian Oneil such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1952573826NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
208D00000XGeneral Practice A118663 (California)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. Dr John Christian Oneil is NOT enrolled with medicare and thus cannot prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr John Christian Oneil, MD
Po Box 1793,
Middletown, CA 95461-1793

Ph: (505) 506-4044		Dr John Christian Oneil, MD
3076 Myrtledale Rd,
Calistoga, CA 94515-1052

Ph: (707) 942-6888

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General Practice Doctors in Calistoga, CA


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.