Dr. Ritchie Allen Larson, MD
- Medicare services, 2024
- 12
- Medicare patients, 2024
- 77
- MIPS score, 2024
- 82
- Industry payments
- $433
- Affiliated sites
- 1
- Practice address
- 747 Broadway, Seattle, WA 98122
- Practice phone
- Call (206) 386-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Swedish Medical Center -First Hill
Seattle, Washington
Find Dr. Larson's professional email, personal email and mobile number
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Dr. Ritchie Allen Larson is an anesthesiologist in Seattle, Washington
Dr. Larson practices at Swedish Medical Center -First Hill in Seattle, Washington.
Dr. Larson's NPI, 1235280462, was assigned on January 15, 2007. Dr. Larson graduated from University of Chicago, Pritzker School of Medicine in 1992. Dr. Larson holds Washington license MD00032132.
- NPI
- 1235280462NPI Registry (opens in a new tab)
- NPI enumeration date
- January 15, 2007
- NPI status
- Active
- Practice phone
- (206) 386-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Ritchie Allen Larson practices at Swedish Medical Center -First Hill in Seattle, Washington
Dr. Larson's primary practice is Swedish Medical Center -First Hill, at 747 Broadway, Seattle, WA 98122 in King County. The practice phone is (206) 386-6000.
- Swedish Medical Center -First Hill747 Broadway, Seattle, WA 98122 · King CountyPhone(206) 386-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ritchie Allen Larson is affiliated with 2 sites of care and 1 medical group
Dr. Larson's primary practice is Swedish Medical Center -First Hill in Seattle, Washington. The medical group on file is U.S. Anesthesia Partners of Washington. Dmand AI also links Dr. Larson to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ritchie Allen Larson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Swedish Medical Center -First Hill | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ritchie Allen Larson is one of 1,332 anesthesiologists in Washington
Anesthesiology is Dr. Larson's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Larson is licensed in Washington.
Specialties and state licenses
- Anesthesiology, WashingtonPrimary
Anesthesiologists near Dr. Larson
Counts of anesthesiologists 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. Ritchie Allen Larson billed Medicare for 12 services in 2024
CMS data shows 12 Medicare services from Dr. Larson across 1 procedure code in 2024, for 77 Medicare patients. Medicare paid $425 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Larson's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Surgery
- 2023: 02024: 12
- Anesthesia
- 2023: 162024: 0100%
Dr. Larson compared with the Washington median for anesthesiologists, 2024
- Dr. Larson
- Washington median
- Medicare services
- 12vs 4171% below
- Medicare patients
- 77vs 10728% below
Medians across 1,312 anesthesiologists in Washington 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 anesthesiologists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ritchie Allen Larson treated 77 Medicare patients in 2024, average age 72
CMS counts 77 Medicare patients who saw Dr. Larson in 2024. The largest group is 65 to 74, with 42 patients. 74% of them have high cholesterol, and 71% have high blood pressure. 18% are also on Medicaid. Their average risk score is 1.21, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Larson's median patient age at 49, with 25% women.
Dr. Larson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Larson's Medicare patients by sex, 2024
- Women3647%
- Men4153%
Chronic conditions among Dr. Larson's Medicare patients, 2024
- High cholesterol74%
- High blood pressure71%
- Arthritis66%
- Cancer34%
- COPD27%
- Atrial fibrillation26%
- Ischemic heart disease26%
- Asthma25%
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 49
Patient panel by sex, all payers
- Women25%
- Men75%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ritchie Allen Larson scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Larson for performance year 2024, reported as part of a group.
Dr. Larson's MIPS scores, performance year 2024
- 82of 100Final score
- 80.9of 100Quality
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ritchie Allen Larson received $433 in industry payments from 2016 to 2024
CMS Open Payments shows 6 general payments to Dr. Larson from 3 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Halyard Health, Inc. paid the most, $197.
General payments to Dr. Larson by program year, 2016 to 2024
Companies that paid Dr. Larson the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ritchie Allen Larson graduated from University of Chicago, Pritzker School of Medicine
Dr. Larson graduated from University of Chicago, Pritzker School of Medicine in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ritchie Allen 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Clinician Public Reporting: Overall MIPS Performance (CMS) (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 |
| 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. Ritchie Allen 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. Ritchie Allen Larson's NPI number?
Dr. Ritchie Allen Larson's NPI number is 1235280462. It was assigned on January 15, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Ritchie Allen Larson?
Dr. Ritchie Allen Larson is an anesthesiologist in Seattle, Washington. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Ritchie Allen Larson practice?
Dr. Larson practices at 747 Broadway, Seattle, WA 98122. Dr. Larson's primary practice is Swedish Medical Center -First Hill in Seattle, Washington. Dmand AI also links Dr. Larson to 1 group practice or clinic.
What is Dr. Ritchie Allen Larson's office phone number?
The practice phone on file for Dr. Larson is (206) 386-6000.
What is Dr. Ritchie Allen Larson's medical license number?
Dr. Larson holds Washington license MD00032132.
What medical group is Dr. Ritchie Allen Larson part of?
Dr. Larson is linked to U.S. Anesthesia Partners of Washington.
Does Dr. Ritchie Allen Larson accept Medicare?
Yes. CMS data shows Dr. Larson billed Medicare for 12 services in 2024.
What is Dr. Ritchie Allen Larson's MIPS score?
Dr. Larson's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ritchie Allen Larson see?
CMS counts 77 Medicare patients who saw Dr. Larson in 2024, with an average age of 72.
What services does Dr. Ritchie Allen Larson bill to Medicare?
In 2024, Dr. Larson's most billed Medicare services were surgery: heart and blood vessels (36620).
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Where did Dr. Ritchie Allen Larson go to medical school?
Dr. Larson graduated from University of Chicago, Pritzker School of Medicine in 1992.
Has Dr. Ritchie Allen Larson received payments from drug or device companies?
CMS Open Payments shows $433 in general payments to Dr. Larson from 3 companies from 2016 to 2024. The largest total came from Halyard Health, Inc.
How long has Dr. Ritchie Allen Larson been practicing?
Dr. Larson graduated from medical school in 1992, 34 years ago.
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