Larissa M. Ackerson, DO
Family Medicine Physician · Ames, IA
Larissa M. Ackerson, DO is a family medicine physician with a practice address in Ames, Iowa, and NPI 1255666020, issued on Oct 12, 2009. Check the license (Iowa 04259, as entered in NPPES) on the Iowa Board of Medicine; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Larissa M. Ackerson
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 04259 IA
Self-reported in NPPES; status is on the state search - Practice location
- Isu Thielen Student Health Center 2647 Union Drive, Ames, IA 50011
- Phone
- (515) 294-5801
- Enumerated
- Oct 12, 2009
- Record last updated
- Jul 27, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (515) 294-1190
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Also registered at Isu Thielen Student Health Center 2647 Union Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mia Manguno, FNPFamily Nurse Practitioner1861866519
Verify Larissa M. Ackerson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 04259Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Larissa M. Ackerson among 2,336 family medicine physician records in Iowa
Larissa M. Ackerson, 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 not. Its NPI, issued in 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileNo · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2018 · 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).
39 family medicine physician records list a practice address in Ames
They are 39 of the 1,249 NPPES records with a practice address in Ames, and 2,336 family medicine physician records in Iowa. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,336 in Iowa → Every provider in Ames → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- James Bice, DOAmes, IA 500111013925205
- Robyn Engstrom, MDAmes, IA 500111578625398
- Rebecca Fritzsche, MDAmes, IA 500111437211174
- Pauline Miller, MDAmes, IA 500111508929100
- Cosette Scallon, MDAmes, IA 500111396808960
- Steven Sheldahl, M.D.Ames, IA 500111780869586
- Lee Wilkins, MDAmes, IA 500111881757466
- Einar Arason, D.O.Ames, IA 500101831321579
Common questions
What is Larissa M. Ackerson, DO's NPI number?
Larissa M. Ackerson, DO's National Provider Identifier (NPI) is 1255666020, issued on Oct 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Larissa M. Ackerson, DO located?
The NPPES record lists a practice address at Isu Thielen Student Health Center 2647 Union Drive, Ames, IA, 50011. Phone: (515) 294-5801. Providers update this record themselves, so call before visiting.
How can I verify Larissa M. Ackerson, DO's license?
NPPES lists Iowa license number 04259, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.