Dr Grahamm Wiest, PSYD - Medicare in Mission Viejo, CA

Dr Grahamm Wiest, PSYD is a medicare enrolled "Clinical Neuropsychologist" provider in Mission Viejo, California. He graduated from medical school in 2021 and has 4 years of diverse experience with area of expertise as Neuropsychiatry. His current practice location is 26800 Crown Valley Pkwy Ste 320, Mission Viejo, California. You can reach out to his office (for appointments etc.) via phone at (949) 365-2468.

Dr Grahamm Wiest is licensed to practice in California (license number 34353) and he also participates in the medicare program. He may accept medicare assignments (which means he may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance) and his NPI Number is 1962015628.

Contact Information

Dr Grahamm Wiest, PSYD
26800 Crown Valley Pkwy Ste 320,
Mission Viejo, CA 92691-7320
(949) 365-2468
Not Available

Map and Direction




Healthcare Provider's Profile

Full NameDr Grahamm Wiest
GenderMale
SpecialityNeuropsychiatry
Experience4 Years
Location26800 Crown Valley Pkwy Ste 320, Mission Viejo, California
Accepts Medicare AssignmentsMay be. He may accept the Medicare-approved amount; you may be billed for more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Grahamm Wiest graduated from medical school in 2021
  NPI Data:
  • NPI Number: 1962015628
  • Provider Enumeration Date: 08/24/2020
  • Last Update Date: 07/15/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 3375050719
  • Enrollment ID: I20250729004785

Medical Identifiers

Medical identifiers for Dr Grahamm Wiest such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1962015628NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
103T00000XPsychologist (California)Secondary
103G00000XClinical Neuropsychologist 34353 (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 Grahamm Wiest 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 Grahamm Wiest, PSYD
505 N Euclid St Ste 300,
Anaheim, CA 92801-5514

Ph: (714) 871-5646
Dr Grahamm Wiest, PSYD
26800 Crown Valley Pkwy Ste 320,
Mission Viejo, CA 92691-7320

Ph: (949) 365-2468

Reviews and Comments



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.