CHRISTOPHER LARSON M.D.
NPI 1558592121
Internal Medicine - Hematology & Oncology in San Diego, CA
About Christopher Larson M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHRISTOPHER LARSON M.D. (NPI 1558592121) is an individual hematology & oncology provider in San Diego, California, licensed in California (A116171) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS, maintains a secondary practice location in La Jolla, and is a graduate of University Of Texas Southwestern Medical School At Dallas (2009).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Christopher Larson M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Christopher Larson's NPI number?
The NPI number for Christopher Larson is 1558592121. It was assigned to this individual provider in the NPPES registry on July 30, 2009.
Where is Christopher Larson located?
Christopher Larson practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (800) 926-8273.
What is Christopher Larson's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Christopher Larson enrolled in Medicare?
Yes. Christopher Larson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
When was this NPI record last updated?
The NPPES record for Christopher Larson was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Christopher Larson, M.D. · NPI 1558592121
Hematology & Oncology physician in San Diego, California. Individual provider, active in the CMS NPPES registry since July 30, 2009.
## Identity
- **NPI:** 1558592121 (Entity type: Individual)
- **Enumerated:** July 30, 2009
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** A116171 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 W ARBOR DR, San Diego, CA 92103-9000
- **Phone:** (800) 926-8273
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** University Of Texas Southwestern Medical School At Dallas, class of 2009
## Record status
- **NPPES last updated:** November 13, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1558592121) · Data from the CMS NPPES public registry.