Mark Thomas Mentzer, OD
Optometrist · Hiawatha, IA
Mark Thomas Mentzer, OD is an optometrist with a practice address in Hiawatha, Iowa, and NPI 1184813305, issued on Oct 24, 2007. Check the license (Iowa 01912, as entered in NPPES) with the Iowa board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Thomas Mentzer
- Credential
- OD
- Primary taxonomy
- Optometrist 152W00000X
- License number
- 01912 IA
Self-reported in NPPES; status is on the state search - Practice location
- 2200 Blairsferry Crossing, Hiawatha, IA 52233
- Phone
- (319) 294-9546
- Enumerated
- Oct 24, 2007
- Record last updated
- Jun 15, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (319) 395-0089
- Medicaid ID
- 3284331 IA
- Medicare enrollment
- Enrolled (PECOS I20040914000392); accepts Medicare assignment
- Medical or professional school
- Illinois College Of Optometry At Chicago, 1989
- Entity
- Type 1 · individual
8 nearest optometrist records → All 676 in Iowa → Look up another NPI →
Verify Mark Thomas Mentzer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Iowa board licenses this profession
Search for license 01912Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% fewer Medicare Part D claims than the average optometrist in 2024
213 Medicare Part D claims for 70 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Latanoprost58 claims
- Prednisolone Acetate34 claims
- Tobramycin-Dexamethasone19 claims
- Dorzolamide-Timolol11 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.
Mark Thomas Mentzer among 676 optometrist records in Iowa
Mark Thomas Mentzer, 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 2007, is newer than 56% of them.
- NPI issued2007 · 56% of these records are older, 37% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1989 · median 2006 among the 462 with a school on file
- Record last updated2009 · 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).
Optometrist providers in Iowa
There are 676 optometrist records in Iowa.
All 676 in Iowa → Every provider in Hiawatha → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Anna Dimmer, ODIowa City, IA 522401821526864
- Douglas Hand, ODIowa City, IA 522401689655169
- Paul Hottel, ODIowa City, IA 522401043284805
- Matthew Houck, O.D.Iowa City, IA 522401942658455
- Nickolas Huisman, O.D.Iowa City, IA 522401275972697
- Rachel Hutchins, O.D.Iowa City, IA 522401023270998
- Merle Kjonaas, ODIowa City, IA 522401245205699
- Annette Nickel, O.D.Iowa City, IA 522401053607093
Common questions
What is Mark Thomas Mentzer, OD's NPI number?
Mark Thomas Mentzer, OD's National Provider Identifier (NPI) is 1184813305, issued on Oct 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Thomas Mentzer, OD located?
The NPPES record lists a practice address at 2200 Blairsferry Crossing, Hiawatha, IA, 52233. Phone: (319) 294-9546. Providers update this record themselves, so call before visiting.
How can I verify Mark Thomas Mentzer, OD's license?
NPPES lists Iowa license number 01912, as entered by the provider. Search the Iowa board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Thomas Mentzer, OD prescribe under Medicare Part D?
In 2024, Mark Thomas Mentzer, OD had 213 Medicare Part D claims for 70 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.