Darin James Larson, M.D.
Orthopaedic Surgery Physician · Marshalltown, IA
Darin James Larson, M.D. is an orthopaedic surgery physician with a practice address in Marshalltown, Iowa, and NPI 1568842391, issued on Jun 7, 2015. Check the license (Iowa MD-48124, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Darin James Larson
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License numbers
- MD-48124 IA
7420 NE
Self-reported in NPPES; status is on the state search - Practice location
- 51 Unitypoint Way, Marshalltown, IA 50158
- Phone
- (641) 844-6259
- Enumerated
- Jun 7, 2015
- Record last updated
- Nov 6, 2023
- Medicare enrollment
- Enrolled (PECOS I20210811001680); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 257 in Iowa → Look up another NPI →
Also registered at 51 Unitypoint Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maggie Potter, PA-SPhysician Assistant1912792508
Verify Darin James Larson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license MD-48124Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
156 Medicare Part D claims for 56 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 48 claims were for opioids.
Most prescribed
- Oxycodone Hcl42 claims
- Ondansetron Odt36 claims
- Cephalexin15 claims
- Meloxicam15 claims
- Amoxicillin14 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 MIPS final score for 2023 (Medicare payment program): 97.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $378.60
3 payments; by number, the most common kind was food and beverage; the largest payer was Zimmer Biomet Holdings, Inc. The 15,003 providers of this specialty with any payment received $23,022.89 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
One hospital affiliation
- Unitypoint Health - MarshalltownMarshalltown, IA · Acute Care Hospitals3 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Darin James Larson among 257 orthopaedic surgery physician records in Iowa
Darin James Larson, M.D. is one of 257 orthopaedic surgery physician records with a practice address in Iowa. 76% 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 72% of them.
- NPI issued2015 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2015 · median 2004 among the 151 with a school on file
- Record last updated2023 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
5 orthopaedic surgery physician records list a practice address in Marshalltown
They are 5 of the 443 NPPES records with a practice address in Marshalltown, and 257 orthopaedic surgery physician records in Iowa.
All 257 in Iowa → Every provider in Marshalltown → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Margaret Fehrle, MDMarshalltown, IA 501581770576043
- John Hamilton, MDMarshalltown, IA 501581982720231
- Bradley Lister, MDMarshalltown, IA 501581699768978
- Robert Young, MDMarshalltown, IA 501581932192218
- Jeffrey Wahl, D.O.Jefferson, IA 501291174726962
- Jeffrey Piccirillo, D.O.Grinnell, IA 501121891767257
- Anthony Tedesco, DOGrinnell, IA 501121275940371
- Frank Butera, DONewton, IA 502081699746693
Common questions
What is Darin James Larson, M.D.'s NPI number?
Darin James Larson, M.D.'s National Provider Identifier (NPI) is 1568842391, issued on Jun 7, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Darin James Larson, M.D. located?
The NPPES record lists a practice address at 51 Unitypoint Way, Marshalltown, IA, 50158. Phone: (641) 844-6259. Providers update this record themselves, so call before visiting.
How can I verify Darin James Larson, M.D.'s license?
NPPES lists Iowa license number MD-48124, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Darin James Larson, M.D. prescribe under Medicare Part D?
In 2024, Darin James Larson, M.D. had 156 Medicare Part D claims for 56 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Darin James Larson, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.6 of 100. 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.