Grant Landon, DO
Family Medicine Physician · Mason City, IA
Grant Landon, DO is a family medicine physician with a practice address in Mason City, Iowa, and NPI 1255956975, issued on Jun 9, 2020. Check the license (Iowa R-11944, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Grant Landon
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- R-11944 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1010 4TH St SW Ste 340, Mason City, IA 50401
- Phone
- (641) 428-7766
- Enumerated
- Jun 9, 2020
- Record last updated
- Jun 30, 2023
- Fax
- (641) 428-7788
- Medicare enrollment
- Enrolled (PECOS I20230911001316); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Also registered at 1010 4TH St SW Ste 340
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Anaximander Abimbilla, MDStudent in an Organized Health Care Education/Training Program1619890217
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- Cassey Jo FullerStudent in an Organized Health Care Education/Training Program1396434718
- Cristen Hays, MDStudent in an Organized Health Care Education/Training Program1700575297
- Hazel Hernandez, MDStudent in an Organized Health Care Education/Training Program1194529842
Verify Grant Landon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license R-11944Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% fewer Medicare Part D claims than the average family medicine physician in 2024
3,197 Medicare Part D claims for 632 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 157 claims were for opioids.
Most prescribed
- Losartan Potassium156 claims
- Atorvastatin Calcium118 claims
- Levothyroxine Sodium117 claims
- Amlodipine Besylate115 claims
- Omeprazole96 claims
- Metoprolol Succinate87 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): 64.1 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 one group practice
- Jefferson County HospitalFairfield, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grant Landon among 2,336 family medicine physician records in Iowa
Grant Landon, DO is one of 2,336 family medicine physician records with a practice address in Iowa. 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 2020, is newer than 85% of them.
- NPI issued2020 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2020 · median 2006 among the 1,367 with a school on file
- Record last updated2023 · 61% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 family medicine physician records list a practice address in Mason City
They are 56 of the 866 NPPES records with a practice address in Mason City, and 2,336 family medicine physician records in Iowa.
All 2,336 in Iowa → Every provider in Mason City → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Joseph Behr, MDMason City, IA 504011770699423
- Robert Borgman, MDMason City, IA 504011750304028
- Mark Dankle, DOMason City, IA 504011891725834
- Robert Fagerholm, M.D.Mason City, IA 504011477584092
- Rebecca Jenkins, D.O.Mason City, IA 504011285613893
- Hameed Khan, MDMason City, IA 504011700813342
- Kimberly Larson, ARNPMason City, IA 504011689680183
- Mark Mahoney, M.D.Mason City, IA 504011427028554
Common questions
What is Grant Landon, DO's NPI number?
Grant Landon, DO's National Provider Identifier (NPI) is 1255956975, issued on Jun 9, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Grant Landon, DO located?
The NPPES record lists a practice address at 1010 4TH St SW Ste 340, Mason City, IA, 50401. Phone: (641) 428-7766. Providers update this record themselves, so call before visiting.
How can I verify Grant Landon, DO's license?
NPPES lists Iowa license number R-11944, 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 Grant Landon, DO prescribe under Medicare Part D?
In 2024, Grant Landon, DO had 3,197 Medicare Part D claims for 632 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Grant Landon, DO's MIPS final score?
The 2023 MIPS final score is 64.1 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.