Dr William G Lang, MD - Medicare Internal Medicine in Marina Del Rey, CA

Dr William G Lang, MD is a medicare enrolled "Internal Medicine" physician in Marina Del Rey, California. He graduated from medical school in 1982 and has 42 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Cedars-sinai Medical Care Foundation and his current practice location is 4644 Lincoln Blvd, Suite 111, Marina Del Rey, California. You can reach out to his office (for appointments etc.) via phone at (310) 536-8200.

Dr William G Lang is licensed to practice in California (license number A41887) 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 1366455842.

Contact Information

Dr William G Lang, MD
4644 Lincoln Blvd, Suite 111,
Marina Del Rey, CA 90292-6374
(310) 536-8200
(310) 536-8240

Map and Direction




Physician's Profile

Full NameDr William G Lang
GenderMale
SpecialityInternal Medicine
Experience42 Years
Location4644 Lincoln Blvd, Marina Del Rey, 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 G Lang graduated from medical school in 1982
  NPI Data:
  • NPI Number: 1366455842
  • Provider Enumeration Date: 08/14/2006
  • Last Update Date: 10/03/2013
  Medicare PECOS Information:
  • PECOS PAC ID: 7618935263
  • Enrollment ID: I20041229000232

Medical Identifiers

Medical identifiers for Dr William G Lang such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1366455842NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine A41887 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Cedars-sinai Medical CenterLos angeles, CAHospital
Cedar-sinai Marina Del Rey HospitalMarina del rey, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Cedars-sinai Medical Care Foundation09411066451116

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 G Lang allows following entities to bill medicare on his behalf.
Entity NameCedars-sinai Medical Care Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1316984388
PECOS PAC ID: 0941106645
Enrollment ID: O20040202000464

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 G Lang 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 G Lang, MD
4644 Lincoln Blvd., Suite 111,
Marina Del Rey, CA 90292-6374

Ph: (310) 536-8200
Dr William G Lang, MD
4644 Lincoln Blvd, Suite 111,
Marina Del Rey, CA 90292-6374

Ph: (310) 536-8200

Reviews and Comments


Internal Medicine Doctors in Marina Del Rey, CA

Dr. Jeffrey I Kurland, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 333 Washington Blvd, No. 512, Marina Del Rey, CA 90292
Phone: 310-502-3444    Fax: 310-823-3619
David Kaplowitz, MD
Internal Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 13160 Mindanao Way, Suite 252, Marina Del Rey, CA 90292
Phone: 310-823-4993    Fax: 888-878-7048
Dr. Piyush Srivastava, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 3715 Pacific Ave Apt 3, Marina Del Rey, CA 90292
Phone: 310-463-8773    
Dr. Alan Jeffrey Steinberg, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 4644 Lincoln Blvd, #111, Marina Del Rey, CA 90292
Phone: 310-306-6966    Fax: 310-306-0667
John Joseph Pack, MD
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 4560 Admiralty Way, Suite 356, Marina Del Rey, CA 90292
Phone: 310-822-8584    Fax: 310-822-9924
Dr. Riquaza Zainul Zavahir, M.D.
Internal Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 4560 Admiralty Way Ste 100, Marina Del Rey, CA 90292
Phone: 310-656-1770    

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.