Robert Steven Grittmann, DO
Internal Medicine Physician · Waterloo, IA
Robert Steven Grittmann, DO is an internal medicine physician with a practice address in Waterloo, Iowa, and NPI 1689707291, issued on Mar 13, 2007. Check the license (Iowa 2031, as entered in NPPES) on the Iowa Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Robert Steven Grittmann
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 2031 IA
Self-reported in NPPES; status is on the state search - Practice location
- 2055 Kimball Ave, Waterloo, IA 50702
- Phone
- (319) 272-2340
- Enumerated
- Mar 13, 2007
- Record last updated
- Jul 27, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (319) 272-2347
- Medicaid ID
- 2031146 IA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 871 in Iowa → Look up another NPI →
Also registered at 2055 Kimball Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Gyobanna Driver, MDFamily Medicine Physician1801056874
- Shanna Elliott, DOFamily Medicine Physician1629458302
- Debra Flammang-Roper, LMSWMental Health Counselor1154357812
Verify Robert Steven Grittmann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIowa Board of Medicine
Search for license 2031Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average internal medicine physician in 2024
153 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Furosemide23 claims
- Levetiracetam14 claims
- Carvedilol13 claims
- Losartan Potassium13 claims
- Famotidine12 claims
- Levothyroxine Sodium12 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.
Robert Steven Grittmann among 871 internal medicine physician records in Iowa
Robert Steven Grittmann, DO is one of 871 internal medicine physician records with a practice address in Iowa. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 38% of them.
- NPI issued2007 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 44% of these records are
- Record last updated2010 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 internal medicine physician records list a practice address in Waterloo
They are 37 of the 1,512 NPPES records with a practice address in Waterloo, and 871 internal medicine physician records in Iowa.
All 871 in Iowa → Every provider in Waterloo → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sidrah Abid, MDWaterloo, IA 507021497161830
- Ali Aziz, M.D.Waterloo, IA 507021750767786
- Jonathan Bui, MDWaterloo, IA 507021780115964
- Swarupa Chilakapati, MDWaterloo, IA 507021700349008
- Paul Franke, M.D.Waterloo, IA 507021003082546
- Theodore Lederman, MDWaterloo, IA 507021417992272
- James Lehman, M.D.Waterloo, IA 507021629047204
- Kent Miller, D.O.Waterloo, IA 507021265418552
Common questions
What is Robert Steven Grittmann, DO's NPI number?
Robert Steven Grittmann, DO's National Provider Identifier (NPI) is 1689707291, issued on Mar 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Robert Steven Grittmann, DO located?
The NPPES record lists a practice address at 2055 Kimball Ave, Waterloo, IA, 50702. Phone: (319) 272-2340. Providers update this record themselves, so call before visiting.
How can I verify Robert Steven Grittmann, DO's license?
NPPES lists Iowa license number 2031, 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 Robert Steven Grittmann, DO prescribe under Medicare Part D?
In 2024, Robert Steven Grittmann, DO had 153 Medicare Part D claims; the average among internal medicine physician prescribers was 3,176. 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.