Dr Leonid Kleynberg, MD - Medicare Hematology/oncology in Los Angeles, CA

Dr Leonid Kleynberg, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in Los Angeles, California. He graduated from medical school in 1976 and has 48 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Kleynberg Medical Clinic Inc and his current practice location is 6221 Wilshire Blvd, Suite 504, Los Angeles, California. You can reach out to his office (for appointments etc.) via phone at (323) 965-9995.

Dr Leonid Kleynberg is licensed to practice in California (license number A76900) 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 1891750212.

Contact Information

Dr Leonid Kleynberg, MD
6221 Wilshire Blvd, Suite 504,
Los Angeles, CA 90048-5201
(323) 965-9995
(323) 965-5678

Map and Direction




Physician's Profile

Full NameDr Leonid Kleynberg
GenderMale
SpecialityHematology/oncology
Experience48 Years
Location6221 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 Leonid Kleynberg graduated from medical school in 1976
  NPI Data:
  • NPI Number: 1891750212
  • Provider Enumeration Date: 04/19/2006
  • Last Update Date: 11/17/2011
  Medicare PECOS Information:
  • PECOS PAC ID: 9032008214
  • Enrollment ID: I20040315000569

Medical Identifiers

Medical identifiers for Dr Leonid Kleynberg such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1891750212NPI-NPPES
00A769000MedicaidCA

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology A76900 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Cedars-sinai Medical CenterLos angeles, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Kleynberg Medical Clinic Inc84269476982

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 Leonid Kleynberg allows following entities to bill medicare on his behalf.
Entity NameKleynberg Medical Clinic Inc
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1568570109
PECOS PAC ID: 8426947698
Enrollment ID: O20040315000533

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 Leonid Kleynberg 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 Leonid Kleynberg, MD
6221 Wilshire Blvd, Suite 504,
Los Angeles, CA 90048-5201

Ph: (323) 965-9995
Dr Leonid Kleynberg, MD
6221 Wilshire Blvd, Suite 504,
Los Angeles, CA 90048-5201

Ph: (323) 965-9995

Reviews and Comments


Internal Medicine Doctors in Los Angeles, CA

Dr. Linda Fong, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 6041 Cadillac Ave, Los Angeles, CA 90034
Phone: 323-857-3290    
Dr. Robert Peter Gale,
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Medicare: Medicare Enrolled
Practice Location: 11693 San Vicente Blvd, Suite 335, Los Angeles, CA 90049
Phone: 310-442-9010    
Dr. Tarek Alasil, MD
Hematology & Oncology
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Practice Location: 8616 La Tijera Blvd Ste 404, Los Angeles, CA 90045
Phone: 310-673-2020    Fax: 310-469-5290
David Michael Tellalian, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 8635 W 3rd St Ste 465w, Los Angeles, CA 90048
Phone: 310-358-2300    Fax: 310-358-2308
Dr. Jan B King, M.D., M.P.H.
Hematology & Oncology
Medicare: Not Enrolled in Medicare
Practice Location: 11833 Wilmington Ave Fl 2, Los Angeles, CA 90059
Phone: 323-568-8701    
Dr. Caroline Hwang, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 1520 San Pablo St, Suite 1000, Los Angeles, CA 90033
Phone: 323-442-5100    
Dr. Jennifer A Fulcher, M.D., PH.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 10833 Le Conte Ave, Chs 37-121, Los Angeles, CA 90095
Phone: 310-825-7225    

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.

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