William P Klein, MD - Medicare Internal Medicine in Newport Beach, CA

William P Klein, MD is a medicare enrolled "Internal Medicine" physician in Newport Beach, California. He went to State University Of New York Downstate Medical Center and graduated in 1966 and has 58 years of diverse experience with area of expertise as Internal Medicine. He is a member of the group practice Huntington Beach Internal Medicine Group Inc and his current practice location is 1501 Superior Ave, #111, Newport Beach, California. You can reach out to his office (for appointments etc.) via phone at (949) 274-8030.

William P Klein is licensed to practice in California (license number G14712) 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 1205834819.

Contact Information

William P Klein, MD
1501 Superior Ave, #111,
Newport Beach, CA 92663-3600
(949) 274-8030
(949) 642-3127

Map and Direction




Physician's Profile

Full NameWilliam P Klein
GenderMale
SpecialityInternal Medicine
Experience58 Years
Location1501 Superior Ave, Newport Beach, 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:
  • William P Klein attended and graduated from State University Of New York Downstate Medical Center in 1966
  NPI Data:
  • NPI Number: 1205834819
  • Provider Enumeration Date: 07/08/2005
  • Last Update Date: 01/17/2008
  Medicare PECOS Information:
  • PECOS PAC ID: 7810977857
  • Enrollment ID: I20040721001089

Medical Identifiers

Medical identifiers for William P Klein such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1205834819NPI-NPPES
00G147120MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207R00000XInternal Medicine G14712 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Elegance Healthcare, IncEncino, CAHome health agency
Companion Home HealthOrange, CAHome health agency
Hoag Memorial Hospital PresbyterianNewport beach, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Huntington Beach Internal Medicine Group Inc04462876353

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 P Klein allows following entities to bill medicare on his behalf.
Entity NameUc Regents
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1760430847
PECOS PAC ID: 7416869516
Enrollment ID: O20031118000906
Entity NameHuntington Beach Internal Medicine Group Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1902948771
PECOS PAC ID: 0446287635
Enrollment ID: O20050719001154

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 P Klein 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 P Klein, MD
1501 Superior Ave, #111,
Newport Beach, CA 92663-3600

Ph: (949) 274-8030
William P Klein, MD
1501 Superior Ave, #111,
Newport Beach, CA 92663-3600

Ph: (949) 274-8030

Reviews and Comments


Internal Medicine Doctors in Newport Beach, CA

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Dr. Leslie Kennerly Meserve, M.D.
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Bhavini Jashvant Jaiswal, M.D
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Practice Location: 1 Hoag Dr, Critical Care Department Box 6100, Newport Beach, CA 92663
Phone: 480-227-1318    

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.