Seth Harly Larsen, DO, ABFM, CSCS
Family Medicine Physician · Phoenix, AZ
Seth Harly Larsen, DO, ABFM, CSCS is a family medicine physician with a practice address in Phoenix, Arizona, and NPI 1447633110, issued on Jun 30, 2015. Check the license (Arizona 008324, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Seth Harly Larsen
- Credential
- DO, ABFM, CSCS
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 008324 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 18404 N Tatum Blvd, Phoenix, AZ 85032
- Phone
- (602) 485-7475
- Enumerated
- Jun 30, 2015
- Record last updated
- Oct 18, 2024
- Medicare enrollment
- Enrolled (PECOS I20211111002579); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,119 in Arizona → Look up another NPI →
Also registered at 18404 N Tatum Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Seth Harly Larsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 008324Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average family medicine physician in 2024
658 Medicare Part D claims for 472 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Doxycycline Hyclate94 claims
- Prednisone90 claims
- Ipratropium Bromide65 claims
- Cefdinir56 claims
- Cephalexin38 claims
- Amoxicillin-Clavulanate Potass27 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 75.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Honorhealth Medical Group, LLCAnthem, AZ
- Honorhealth Urgent Care LLCPhoenix, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Seth Harly Larsen among 3,119 family medicine physician records in Arizona
Seth Harly Larsen, DO, ABFM, CSCS is one of 3,119 family medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 73% of them.
- NPI issued2015 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2015 · median 2006 among the 1,775 with a school on file
- Record last updated2024 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
649 family medicine physician records list a practice address in Phoenix
They are 649 of the 31,399 NPPES records with a practice address in Phoenix, and 3,119 family medicine physician records in Arizona.
All 3,119 in Arizona → Every provider in Phoenix → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
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- Mitchell EdelsteinPhoenix, AZ 850321164422085
- Ronald Habros, MDPhoenix, AZ 850321467432567
- Luis Irizarry, MDPhoenix, AZ 850321487658175
- Paul Laven, DOPhoenix, AZ 850321396718102
Common questions
What is Seth Harly Larsen, DO, ABFM, CSCS's NPI number?
Seth Harly Larsen, DO, ABFM, CSCS's National Provider Identifier (NPI) is 1447633110, issued on Jun 30, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Seth Harly Larsen, DO, ABFM, CSCS located?
The NPPES record lists a practice address at 18404 N Tatum Blvd, Phoenix, AZ, 85032. Phone: (602) 485-7475. Providers update this record themselves, so call before visiting.
How can I verify Seth Harly Larsen, DO, ABFM, CSCS's license?
NPPES lists Arizona license number 008324, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Seth Harly Larsen, DO, ABFM, CSCS prescribe under Medicare Part D?
In 2024, Seth Harly Larsen, DO, ABFM, CSCS had 658 Medicare Part D claims for 472 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Seth Harly Larsen, DO, ABFM, CSCS's MIPS final score?
The 2023 MIPS final score is 75.6 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.