Dr Warren Ritchie Christianson Ii, DO - Medicare Psychiatry in San Marino, CA

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Dr Warren Ritchie Christianson Ii, DO is a medicare enrolled "Psychiatry & Neurology - Psychiatry" physician in San Marino, California. He graduated from medical school in 2004 and has 20 years of diverse experience with area of expertise as Psychiatry. He is a member of the group practice Vista Community Clinic, San Marino Psychiatric Associates Inc and his current practice location is 2400 Mission St, San Marino, California. You can reach out to his office (for appointments etc.) via phone at (626) 403-8999.

Dr Warren Ritchie Christianson Ii is licensed to practice in California (license number 20A9664) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1932359445.

Contact Information

Dr Warren Ritchie Christianson Ii, DO
2400 Mission St,
San Marino, CA 91108-1632
(626) 403-8999
(626) 403-8989

Map and Direction




Physician's Profile

Full NameDr Warren Ritchie Christianson Ii
GenderMale
SpecialityPsychiatry
Experience20 Years
Location2400 Mission St, San Marino, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr Warren Ritchie Christianson Ii graduated from medical school in 2004
  NPI Data:
  • NPI Number: 1932359445
  • Provider Enumeration Date: 09/22/2008
  • Last Update Date: 09/21/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 5597936963
  • Enrollment ID: I20110914000671

Medical Identifiers

Medical identifiers for Dr Warren Ritchie Christianson Ii such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1932359445NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084P0800XPsychiatry & Neurology - Psychiatry 20A9664 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Vista Community Clinic004212015620
San Marino Psychiatric Associates Inc67098648955

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 Warren Ritchie Christianson Ii allows following entities to bill medicare on his behalf.
Entity NameBorrego Community Health Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1134144165
PECOS PAC ID: 1759299944
Enrollment ID: O20040122000961
Entity NameSan Marino Psychiatric Associates Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1063540938
PECOS PAC ID: 6709864895
Enrollment ID: O20040713001664

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 Warren Ritchie Christianson Ii 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 Warren Ritchie Christianson Ii, DO
2400 Mission St,
San Marino, CA 91108-1632

Ph: (626) 403-8999		Dr Warren Ritchie Christianson Ii, DO
2400 Mission St,
San Marino, CA 91108-1632

Ph: (626) 403-8999

Reviews and Comments


Psychiatry & Neurology Doctors in San Marino, CA

Dr. Terry Ann Bissell, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 2400 Mission St, San Marino, CA 91108
Phone: 626-403-8999    Fax: 626-403-8989
Dr. Sheela Gade, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 2400 Mission Street, San Marino, CA 91108
Phone: 626-403-8999    
Dr. Desmond B. Chiong, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 1455 San Marino Ave, Suite A, San Marino, CA 91108
Phone: 626-577-9010    Fax: 626-577-9129
Dr. Ryan R Courdy, M.D.
Psychiatry & Neurology
Medicare: Medicare Enrolled
Practice Location: 2400 Mission St, San Marino, CA 91108
Phone: 626-403-8999    Fax: 626-403-8973
Dr. Berry L. Mccord, M.D.
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 2400 Mission St, San Marino, CA 91108
Phone: 626-403-8999    Fax: 626-403-8999
Dr. Rebecca Najera, DO
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 2400 Mission St, San Marino, CA 91108
Phone: 626-403-8999    
Aura-marie Pawley, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 2400 Mission St, San Marino, CA 91108
Phone: 626-403-8999    Fax: 626-403-8989

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.