Christopher Larson, MD - Medicare Hematology/oncology in San Diego, CA

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Christopher Larson, MD is a medicare enrolled "Internal Medicine - Hematology & Oncology" physician in San Diego, California. He went to University Of Texas Southwestern Medical School At Dallas and graduated in 2009 and has 17 years of diverse experience with area of expertise as Hematology/oncology. He is a member of the group practice Regents Of The University Of California, The Oncology Institute Ca, A Professional Corporation and his current practice location is 200 W Arbor Dr, San Diego, California. You can reach out to his office (for appointments etc.) via phone at (800) 926-8273.

Christopher Larson is licensed to practice in California (license number A116171) 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 1558592121.

Contact Information

Christopher Larson, MD
200 W Arbor Dr,
San Diego, CA 92103-9000
(800) 926-8273
Not Available

Map and Direction




Physician's Profile

Full NameChristopher Larson
GenderMale
SpecialityHematology/oncology
Experience17 Years
Location200 W Arbor Dr, San Diego, 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:
  • Christopher Larson attended and graduated from University Of Texas Southwestern Medical School At Dallas in 2009
  NPI Data:
  • NPI Number: 1558592121
  • Provider Enumeration Date: 07/30/2009
  • Last Update Date: 11/13/2025
  Medicare PECOS Information:
  • PECOS PAC ID: 4486061587
  • Enrollment ID: I20210407000598

Medical Identifiers

Medical identifiers for Christopher Larson such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1558592121NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RH0003XInternal Medicine - Hematology & Oncology A116171 (California)Primary

Medical Facilities Affiliation

Facility NameLocationFacility Type
Uc San Diego Health Hillcrest - Hillcrest Med CtrSan diego, CAHospital

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Regents Of The University Of California35774767612047
The Oncology Institute Ca, A Professional Corporation5698872398114

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. Christopher Larson allows following entities to bill medicare on his behalf.
Entity NameRegents of the University of California
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1376646869
PECOS PAC ID: 3577476761
Enrollment ID: O20031112000695
Entity NameThe Oncology Institute Ca, a Professional Corporation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1275651515
PECOS PAC ID: 5698872398
Enrollment ID: O20070514000607

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. Christopher Larson 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
Christopher Larson, MD
File 57326,
Los Angeles, CA 90074-7326

Ph: (800) 926-8273		Christopher Larson, MD
200 W Arbor Dr,
San Diego, CA 92103-9000

Ph: (800) 926-8273

Reviews and Comments


Internal Medicine Doctors in San Diego, CA

Dr. Ramin Motarjemi, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 200 W Arbor Dr, San Diego, CA 92103
Phone: 858-249-2500    Fax: 858-657-8069
Dr. Shweta Warner, M.D.
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Practice Location: 4647 Zion Ave, San Diego, CA 92120
Phone: 619-221-6258    Fax: 619-221-6012
Dr. Eugene Thomas Richardson Iv, MD
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Practice Location: 200 W Arbor Dr, San Diego, CA 92103
Phone: 800-926-8273    Fax: 888-539-8781
Dr. Matthew James Roosevelt, M.D.
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 4647 Zion Ave, Department Of Hospital Medicine, San Diego, CA 92120
Phone: 619-952-5091    
Dr. Sankar Sridaran, M.D.
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Medicare: Accepting Medicare Assignments
Practice Location: 7565 Mission Valley Rd, San Diego, CA 92108
Phone: 619-245-2810    
Marin Nishimura-kaminski,
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 200 W Arbor Dr, San Diego, CA 92103
Phone: 800-926-8273    Fax: 888-539-8781
Siddharth Kumar Iyengar, MD
Hematology & Oncology
Medicare: Accepting Medicare Assignments
Practice Location: 200 W Arbor Dr, San Diego, CA 92103
Phone: 800-926-8273    Fax: 888-539-8781

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.