Dr William Li, MD - Medicare Infectious Disease in Los Angeles, CA

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Dr William Li, MD is a medicare enrolled "Internal Medicine - Critical Care Medicine" physician in Los Angeles, California. He graduated from medical school in 2015 and has 9 years of diverse experience with area of expertise as Infectious Disease. He is a member of the group practice Arcadia Intensivist Group Inc., Hp Intensivist Medical Group, Inc, Willow Brook Critical Care Medical Group, Inc and his current practice location is 1225 Wilshire Blvd, Los Angeles, California. You can reach out to his office (for appointments etc.) via phone at (213) 977-2121.

Dr William Li is licensed to practice in California (license number A150608) 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 1154703940.

Contact Information

Dr William Li, MD
1225 Wilshire Blvd,
Los Angeles, CA 90017-1901
(213) 977-2121
Not Available

Map and Direction




Physician's Profile

Full NameDr William Li
GenderMale
SpecialityInfectious Disease
Experience9 Years
Location1225 Wilshire Blvd, Los Angeles, 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 William Li graduated from medical school in 2015
  NPI Data:
  • NPI Number: 1154703940
  • Provider Enumeration Date: 06/29/2015
  • Last Update Date: 03/22/2022
  Medicare PECOS Information:
  • PECOS PAC ID: 8921350299
  • Enrollment ID: I20220613002537

Medical Identifiers

Medical identifiers for Dr William Li such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1154703940NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RC0200XInternal Medicine - Critical Care Medicine A150608 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Methodist Hospital Of Southern CaArcadia, CAHospital
Hollywood Presbyterian Medical CenterLos angeles, CAHospital
Glendale Mem Hospital & Hlth CenterGlendale, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Arcadia Intensivist Group Inc.953757422318
Hp Intensivist Medical Group, Inc206280612811
Willow Brook Critical Care Medical Group, Inc347697531914

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 William Li allows following entities to bill medicare on his behalf.
Entity NameBel Air Critical Care Medical Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1396268041
PECOS PAC ID: 4385917491
Enrollment ID: O20170911002793
Entity NameWillow Brook Critical Care Medical Group, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1811520224
PECOS PAC ID: 3476975319
Enrollment ID: O20200622002378
Entity NameArcadia Intensivist Group Inc.
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1598361669
PECOS PAC ID: 9537574223
Enrollment ID: O20210210000588
Entity NameHp Intensivist Medical Group, Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1578221453
PECOS PAC ID: 2062806128
Enrollment ID: O20220307001181
Entity NameCcmma Ca Pc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1679293443
PECOS PAC ID: 5991172207
Enrollment ID: O20221028002534
Entity NameGem Medical Associates
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1437849353
PECOS PAC ID: 7618336199
Enrollment ID: O20231222002748

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 William Li 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 William Li, MD
1015 S Atlantic Blvd,
Alhambra, CA 91803-2216

Ph: (626) 383-6041		Dr William Li, MD
1225 Wilshire Blvd,
Los Angeles, CA 90017-1901

Ph: (213) 977-2121

Reviews and Comments


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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).

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