Ryan L. Grandgenett, MD
Family Medicine Physician · Ames, IA
Ryan L. Grandgenett, MD is a family medicine physician with a practice address in Ames, Iowa, and NPI 1316999865, issued on May 16, 2006. Check the license (Iowa 37407, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Ryan L. Grandgenett
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 37407 IA
44886020 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1018 Duff Ave, Ames, IA 50010
- Phone
- (515) 663-8621
- Enumerated
- May 16, 2006
- Record last updated
- Nov 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (515) 663-8620
- Medicaid ID
- 1316999865 IA
- Medicare enrollment
- Enrolled (PECOS I20070910000882); accepts Medicare assignment
- Medical or professional school
- University Of Iowa, Rj & L Carver College Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,336 in Iowa → Look up another NPI →
Also registered at 1018 Duff Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Bird, M.D.Family Medicine Physician1669469110
- Gary Erbes, M.D.Family Medicine Physician1770571994
- Kindra Gaulke, ARNPFamily Nurse Practitioner1689115263
- Rhonda Rippey, ARNPNurse Practitioner1801877378
- Brian Stith, DOFamily Medicine Physician1639307192
- Kristin Watson, MDFamily Medicine Physician1891289492
Verify Ryan L. Grandgenett in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 37407Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average family medicine physician in 2024
9,348 Medicare Part D claims for 593 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 190 claims were for opioids.
Most prescribed
- Atorvastatin Calcium800 claims
- Omeprazole416 claims
- Amlodipine Besylate403 claims
- Lisinopril386 claims
- Levothyroxine Sodium370 claims
- Losartan Potassium278 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.
Industry payments in 2024: $28.86
2 payments; by number, the most common kind was food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 55,478 providers of this specialty with any payment received $902.55 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.
Bills Medicare through 2 group practices
- Mcfarland Clinic PCAmes, IA
- Tidd-Krafft Occupational And Physical Therapy PAAnkeny, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan L. Grandgenett among 2,336 family medicine physician records in Iowa
Ryan L. Grandgenett, MD 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 48% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2001 · median 2006 among the 1,367 with a school on file
- Record last updated2020 · 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.
All 2,336 in Iowa → Every provider in Ames → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Paul Baumert, MDAmes, IA 500101063408326
- Michael Bird, M.D.Ames, IA 500101669469110
- Scott Bohner, DOAmes, IA 500101447273495
- David Carlyle, M.D.Ames, IA 500101093702912
- Sumathi Chellappa, MDAmes, IA 500101649479551
- Gary Erbes, M.D.Ames, IA 500101770571994
- Sean Juguilon, MDAmes, IA 500101225014624
- Kevin Rahner, DOAmes, IA 500101386653707
Common questions
What is Ryan L. Grandgenett, MD's NPI number?
Ryan L. Grandgenett, MD's National Provider Identifier (NPI) is 1316999865, issued on May 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ryan L. Grandgenett, MD located?
The NPPES record lists a practice address at 1018 Duff Ave, Ames, IA, 50010. Phone: (515) 663-8621. Providers update this record themselves, so call before visiting.
How can I verify Ryan L. Grandgenett, MD's license?
NPPES lists Iowa license number 37407, 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 Ryan L. Grandgenett, MD prescribe under Medicare Part D?
In 2024, Ryan L. Grandgenett, MD had 9,348 Medicare Part D claims for 593 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.