William S Baek, MD - Medicare Psychiatry & Neurology in Upland, CA

William S Baek, MD is a medicare enrolled "Psychiatry & Neurology - Neurology" physician in Upland, California. His current practice location is 630 N 13th Ave, Suite B, Upland, California. You can reach out to his office (for appointments etc.) via phone at (909) 982-2719.

William S Baek is licensed to practice in California (license number A91283) 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 1326095977.

Contact Information

William S Baek, MD
630 N 13th Ave, Suite B,
Upland, CA 91786-4975
(909) 982-2719
(909) 946-9931

Map and Direction




Physician's Profile

Full NameWilliam S Baek
GenderMale
SpecialityPsychiatry & Neurology - Neurology
Location630 N 13th Ave, Upland, California
Accepts Medicare AssignmentsMedicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.
  NPI Data:
  • NPI Number: 1326095977
  • Provider Enumeration Date: 05/28/2006
  • Last Update Date: 02/06/2012
  Medicare PECOS Information:
  • PECOS PAC ID: 5890791529
  • Enrollment ID: I20061019000505

Medical Identifiers

Medical identifiers for William S Baek such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1326095977NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
2084N0400XPsychiatry & Neurology - Neurology A91283 (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. William S Baek allows following entities to bill medicare on his behalf.
Entity NameParkside Medical Group, Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1891935862
PECOS PAC ID: 4385790583
Enrollment ID: O20090912000155

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. William S Baek 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
William S Baek, MD
630 N 13th Ave, Suite B,
Upland, CA 91786-4975

Ph: (909) 982-2719
William S Baek, MD
630 N 13th Ave, Suite B,
Upland, CA 91786-4975

Ph: (909) 982-2719

Reviews and Comments


Psychiatry & Neurology Doctors in Upland, CA

Mr. Peiruch Perry Wich,
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 630 N 13th Ave, Suite F, Upland, CA 91786
Phone: 909-946-3826    Fax: 909-949-4457
Dr. Faisal M Qazi, D.O.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 901 San Bernadino Rd Ste 102, Upland, CA 91786
Phone: 909-949-7443    Fax: 909-949-0770
Dr. Aurora V. Mellijor-soliguen, M.D.
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 1183 E Foothill Blvd., Ste 234, Upland, CA 91786
Phone: 909-949-0076    Fax: 909-931-7777
Dr. Inderjit Singh Seehrai, MD
Psychiatry & Neurology
Medicare: Not Enrolled in Medicare
Practice Location: 934 N Mountain Ave, Suite C, Upland, CA 91786
Phone: 909-579-8100    
Eduardo Pineda, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 820 N Mountain Ave Ste 220, Upland, CA 91786
Phone: 909-256-4175    Fax: 909-727-8012
Dr. Robert B Gordon, MD
Psychiatry & Neurology
Medicare: Accepting Medicare Assignments
Practice Location: 954 W Foothill Blvd, Suite A, Upland, CA 91786
Phone: 909-946-4222    Fax: 909-946-8243

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.