Matthew Krewer, OD
Optometrist · Waterloo, IA
Matthew Krewer, OD is an optometrist with a practice address in Waterloo, Iowa, and NPI 1003269721, issued on Jul 18, 2016. Check the license (Iowa 097765, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Matthew Krewer
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- 097765 IA
OD60679692 WA
Self-reported in NPPES; status is on the state search - Practice location
- 909 E San Marnan Dr, Waterloo, IA 50702
- Phone
- (319) 233-2020
- Enumerated
- Jul 18, 2016
- Record last updated
- Jan 31, 2023
- Medicare enrollment
- Enrolled (PECOS I20221208000471); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 676 in Iowa → Look up another NPI →
Also registered at 909 E San Marnan Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Staci Boon, O.D.Optometrist1013261510
- Lucas CookOptometrist1639582901
- Thomas Petrie, D.O.Ophthalmology Physician1497075642
- Suzanne Smith, ODOptometrist1740234376
Verify Matthew Krewer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 097765Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average optometrist in 2024
200 Medicare Part D claims for 98 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Neomycin-Polymyxin-Dexameth62 claims
- Latanoprost27 claims
- Dorzolamide-Timolol23 claims
- Timolol Maleate23 claims
- Valacyclovir11 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: $142.56
6 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 34,453 providers of this specialty with any payment received $769.99 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 one group practice
- Cedar Valley Medical Specialists PCCedar Falls, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Krewer among 676 optometrist records in Iowa
Matthew Krewer, OD is one of 676 optometrist 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 2016, is newer than 83% of them.
- NPI issued2016 · 83% of these records are older, 15% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2016 · median 2006 among the 462 with a school on file
- Record last updated2023 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
18 optometrist records list a practice address in Waterloo
They are 18 of the 1,512 NPPES records with a practice address in Waterloo, and 676 optometrist records in Iowa.
All 676 in Iowa → Every provider in Waterloo → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Staci Boon, O.D.Waterloo, IA 507021013261510
- Lucas CookWaterloo, IA 507021639582901
- Michael Coons, ODWaterloo, IA 507021134175326
- Emily Halbur, O.D.Waterloo, IA 507021417113812
- Bradley Johnson, ODWaterloo, IA 507021619916137
- Hallie Kuchera, ODWaterloo, IA 507021568022184
- Richard McAlpin, ODWaterloo, IA 507021972609014
- Suzanne Smith, ODWaterloo, IA 507021740234376
Common questions
What is Matthew Krewer, OD's NPI number?
Matthew Krewer, OD's National Provider Identifier (NPI) is 1003269721, issued on Jul 18, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Krewer, OD located?
The NPPES record lists a practice address at 909 E San Marnan Dr, Waterloo, IA, 50702. Phone: (319) 233-2020. Providers update this record themselves, so call before visiting.
How can I verify Matthew Krewer, OD's license?
NPPES lists Iowa license number 097765, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Matthew Krewer, OD prescribe under Medicare Part D?
In 2024, Matthew Krewer, OD had 200 Medicare Part D claims for 98 beneficiaries; the average among optometrist prescribers was 277. 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.