Dr. Sarah Marie Larson, MD
- Medicare services, 2024
- 29,664
- Medicare patients, 2024
- 325
- Part D claims, 2024
- 440
- Publications
- 2
- Clinical trials
- 1
- Practice address
- 1250 16th Street, Santa Monica, CA 90404
- Practice phone
- Call (310) 319-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Larson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Sarah Marie Larson is a hematologist and oncologist in Santa Monica, California
Dr. Larson practices at UCLA Santa Monica Medical Center in Santa Monica, California, part of University of California Health.
Dr. Larson's NPI, 1588820955, was assigned on August 5, 2008. Dr. Larson graduated from University Of Minnesota Medical School in 2007. Dr. Larson holds California license A117249.
- NPI
- 1588820955NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012158058
- NPI enumeration date
- August 5, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (310) 319-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Sarah Marie Larson practices at UCLA Santa Monica Medical Center in Santa Monica, California
Dr. Larson's primary practice is UCLA Santa Monica Medical Center, at 1250 16th Street, Santa Monica, CA 90404 in Los Angeles County. The practice phone is (310) 319-4000.
- UCLA Santa Monica Medical Center1250 16th Street, Santa Monica, CA 90404 · Los Angeles CountyPhone(310) 319-4000
Source: Dmand AI Affiliation Data
Dr. Sarah Marie Larson is affiliated with 3 sites of care and 1 medical group
Dr. Larson's primary practice is UCLA Santa Monica Medical Center in Santa Monica, California, part of University of California Health. Dr. Larson is also affiliated with Ronald Reagan UCLA Medical Center. The medical group on file is UCLA Medical Group. Dmand AI also links Dr. Larson to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Sarah Marie Larson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larson practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| UCLA Santa Monica Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Sarah Marie Larson is one of 1,502 hematologists and oncologists in California
Hematology and oncology is Dr. Larson's primary specialty in the NPI Registry, under taxonomy code 207RH0003X. Dr. Larson is board certified in hematology by the American Board of Internal Medicine. Dmand AI has Dr. Larson's licenses on file in 2 states: California and Illinois.
Specialties and state licenses
- Hematology and oncology, CaliforniaPrimary
- Illinois license
Clinical focus
Dmand AI lists chronic anemia, chronic leukemia, colorectal cancer, immune deficiency disease, lung cancer, lymphoma, multiple myeloma and prostate cancer among the conditions Dr. Larson treats.
Hematologists and oncologists near Dr. Larson
Counts of hematologists and oncologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Sarah Marie Larson billed Medicare for 29,664 services in 2024
CMS data shows 29,664 Medicare services from Dr. Larson across 27 procedure codes in 2024, for 325 Medicare patients. Medicare paid $1,169,946 for them.
Dr. Larson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 36,2722024: 26,65427%
- Lab and pathology
- 2023: 1,2302024: 1,3127%
- Office and hospital visits
- 2023: 1,1782024: 99516%
- Tests and treatments
- 2023: 5982024: 5606%
- Other services
- 2023: 02024: 111
- Surgery
- 2023: 02024: 32
Where Dr. Larson's Medicare services took place, 2024
- In an office29,27399%
- In a facility3911%
Dr. Larson compared with the California median for hematologists and oncologists, 2024
- Dr. Larson
- California median
- Medicare services
- 29,664vs 93231.8 times
- Medicare patients
- 325vs 22544% above
- Part D claims
- 291vs 39426% below
Medians across 1,367 hematologists and oncologists in California with Dmand AI profiles that report each measure.
Dr. Larson's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Larson and other hematologists and oncologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Sarah Marie Larson treated 325 Medicare patients in 2024, average age 72
CMS counts 325 Medicare patients who saw Dr. Larson in 2024. The largest group is 65 to 74, with 162 patients. 69% of them have high cholesterol, and 66% have high blood pressure. 16% are also on Medicaid. Their average risk score is 2.86, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Larson's median patient age at 68, with 49% women.
Dr. Larson's Medicare patients by age, 2024
Dr. Larson's Medicare patients by sex, 2024
- Women16150%
- Men16450%
Chronic conditions among Dr. Larson's Medicare patients, 2024
- High cholesterol69%
- High blood pressure66%
- Arthritis48%
- Ischemic heart disease32%
- Chronic kidney disease30%
- Mood disorders29%
- Diabetes28%
- Anxiety27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Larson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women49%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Sarah Marie Larson wrote 440 Medicare Part D claims in 2024
In 2024, Dr. Larson wrote 440 Medicare Part D claims for 88 patients. 82% of them were for generic drugs. CMS names the drug for 291 of them, across 9 drugs with 11 or more claims each, at $807,362 in total drug cost. In 2023, CMS named 388 claims across 15 drugs.
Dr. Larson's Part D claims by kind of drug, 2024
- Generic359 claims82%
- Brand-name81 claims18%
Dr. Larson's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Larson's Part D claims, 2024
- Antibiotics7%32 of 440 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3882024: 29125%
Drugs named by CMS: 9 in 2024, 15 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Sarah Marie Larson scored 88 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 88 out of 100 for Dr. Larson for performance year 2024, reported as part of a group. Dr. Larson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Larson as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Larson's MIPS scores, performance year 2024
- 88of 100Final score
- 79.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Sarah Marie Larson has 2 publications on record
Dmand AI links 2 papers to Dr. Larson in 2019. Dr. Larson's most frequent co-authors are Jason Tin Aye Lee, MD, Joshua Parks Sasine, MD and John Matthew Timmerman, MD.
Dr. Larson's most frequent co-authors
- Jason Tin Aye Lee, MD1 shared paper
- Joshua Parks Sasine, MD1 shared paper
- John Matthew Timmerman, MD1 shared paper
Recent publications by Dr. Larson
See who Dr. Larson researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Larson works with, so you can find a warm path to the right hematologists and oncologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Sarah Marie Larson has worked on 1 clinical trial
Dmand AI links Dr. Larson to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Anemia, Sickle Cell and Anemia, Hemolytic, Congenital. Open Payments lists research payments to Dr. Larson that name 1 trial.
Conditions in Dr. Larson's trials
- Anemia, Sickle Cell
- Anemia, Hemolytic, Congenital
Investigators on the most trials with Dr. Larson
- Gay Miriam Crooks, MD1 shared trial
- Donald Barry Kohn, MD1 shared trial
- Theodore Bruce Moore, MD1 shared trial
Recent clinical trials with Dr. Larson
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Sarah Marie Larson received $27,801 in industry payments from 2016 to 2025
CMS Open Payments shows 69 general payments to Dr. Larson from 17 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 48% of the total. Regeneron Pharmaceuticals, Inc. paid the most, $7,009. It also lists 12 research payments totaling $7,070 from 2023 to 2025, naming 1 clinical trial.
General payments to Dr. Larson by program year, 2016 to 2025
General payments to Dr. Larson by kind, 2016 to 2025
- Consulting fees$13,23548%
- Speaker and faculty fees$8,71931%
- Travel and lodging$3,11811%
- Food and beverage$2,6049%
- Education$1260%
Companies that paid Dr. Larson the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Sarah Marie Larson graduated from University Of Minnesota Medical School
Dr. Larson graduated from University Of Minnesota Medical School in 2007.
- Medical school
- Board certified in hematology
- Board certified in medical oncology
Source: Dmand AI Professional Profile Data
Dr. Sarah Marie Larson accepts plans from 10 insurance carriers
Dr. Larson is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
- LA Care
- +2 more carriersWith a free account
Plan types Dr. Larson accepts, by number of carriers
- Medicare8
- PPO6
- HMO4
- POS3
- EPO2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. Sarah Marie Larson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Sarah Marie Larson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Sarah Marie Larson's NPI number?
Dr. Sarah Marie Larson's NPI number is 1588820955. It was assigned on August 5, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Sarah Marie Larson?
Dr. Sarah Marie Larson is a hematologist and oncologist in Santa Monica, California. The primary specialty in the NPI Registry is Hematology & Oncology Physician (taxonomy code 207RH0003X).
Where does Dr. Sarah Marie Larson practice?
Dr. Larson practices at 1250 16th Street, Santa Monica, CA 90404. Dr. Larson's primary practice is UCLA Santa Monica Medical Center in Santa Monica, California, part of University of California Health. Dmand AI also links Dr. Larson to 1 group practice or clinic.
What is Dr. Sarah Marie Larson's office phone number?
The practice phone on file for Dr. Larson is (310) 319-4000.
What is Dr. Sarah Marie Larson's medical license number?
Dr. Larson holds California license A117249, one of the licenses on file in 2 states.
Which states has Dr. Sarah Marie Larson been licensed in?
Dmand AI has state licenses on file for Dr. Larson in California (2011 to 2027) and Illinois (2007 to 2011).
Which hospitals is Dr. Sarah Marie Larson affiliated with?
Dr. Larson practices at UCLA Santa Monica Medical Center in Santa Monica, California. Dr. Larson is also affiliated with Ronald Reagan UCLA Medical Center.
What medical group is Dr. Sarah Marie Larson part of?
Dr. Larson is linked to UCLA Medical Group.
Does Dr. Sarah Marie Larson accept Medicare?
Yes. CMS data shows Dr. Larson billed Medicare for 29,664 services in 2024, and Dr. Larson accepts Medicare assignment.
Does Dr. Sarah Marie Larson offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Larson as offering telehealth services.
Show 11 more questionsShow fewer questions
What is Dr. Sarah Marie Larson's MIPS score?
Dr. Larson's MIPS final score for performance year 2024 is 88 out of 100, reported as part of a group.
How many Medicare patients does Dr. Sarah Marie Larson see?
CMS counts 325 Medicare patients who saw Dr. Larson in 2024, with an average age of 72.
Is Dr. Sarah Marie Larson board certified?
Yes. Dr. Larson is board certified in hematology by the American Board of Internal Medicine.
What services does Dr. Sarah Marie Larson bill to Medicare?
In 2024, Dr. Larson's most billed Medicare services were injected or infused drug (J9144), injected or infused drug (J1561) and office visit, established patient (99214).
Where did Dr. Sarah Marie Larson go to medical school?
Dr. Larson graduated from University Of Minnesota Medical School in 2007.
What drugs does Dr. Sarah Marie Larson prescribe most?
In 2024 Medicare Part D data, Dr. Larson's most prescribed drugs by claims were Acyclovir, Bortezomib and Dexamethasone.
Has Dr. Sarah Marie Larson received payments from drug or device companies?
CMS Open Payments shows $27,801 in general payments to Dr. Larson from 17 companies from 2016 to 2025. The largest total came from Regeneron Pharmaceuticals, Inc.
How long has Dr. Sarah Marie Larson been practicing?
Dr. Larson graduated from medical school in 2007, 19 years ago.
Does Dr. Sarah Marie Larson do research?
Dmand AI links 2 publications to Dr. Larson. Dr. Larson has worked on 1 clinical trial.
Who does Dr. Sarah Marie Larson publish with?
Dr. Larson's most frequent co-authors are Jason Tin Aye Lee, MD (1 shared paper), Joshua Parks Sasine, MD (1 shared paper) and John Matthew Timmerman, MD (1 shared paper).
What insurance does Dr. Sarah Marie Larson accept?
Dr. Larson is in network with 10 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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