Mark Thomas Mentzer, OD
- Medicare patients, 2024
- 323
- Part D claims, 2024
- 213
- Industry payments
- $110
- Affiliated sites
- 1
- State license
- 1
- Practice address
- 2200 Blairsferry Xing, Hiawatha, IA 52233
- Practice phone
- Call (319) 294-9546
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mark T Mentzer OD
Hiawatha, Iowa
Find Mark Mentzer's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Mark Thomas Mentzer is an optometrist in Hiawatha, Iowa
Mark Mentzer practices at Mark T Mentzer OD in Hiawatha, Iowa.
Mark Mentzer's NPI, 1184813305, was assigned on October 24, 2007. Mark Mentzer graduated from Illinois College of Optometry at Chicago in 1989. Mark Mentzer holds Iowa license 01912.
- NPI
- 1184813305NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739156373
- NPI enumeration date
- October 24, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (319) 294-9546
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 63
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Mark Thomas Mentzer practices at Mark T Mentzer OD in Hiawatha, Iowa
Mark Mentzer's primary practice is Mark T Mentzer OD, at 2200 Blairsferry Xing, Hiawatha, IA 52233 in Linn County. The practice phone is (319) 294-9546.
- Mark T Mentzer OD2200 Blairsferry Xing, Hiawatha, IA 52233 · Linn CountyPhone(319) 294-9546
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Mark Thomas Mentzer is affiliated with 2 sites of care
Mark Mentzer's primary practice is Mark T Mentzer OD in Hiawatha, Iowa. Dmand AI also links Mark Mentzer to 1 physician office, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Mark Thomas Mentzer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Mark Mentzer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mark T Mentzer OD | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Mark Thomas Mentzer is one of 501 optometrists in Iowa
Optometrist is Mark Mentzer's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Mark Mentzer is licensed in Iowa.
Specialties and state licenses
- Optometrist, IowaPrimary
Optometrists near Mark Mentzer
Counts of optometrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Mark Thomas Mentzer treated 323 Medicare patients in 2024, average age 74
CMS counts 323 Medicare patients who saw Mark Mentzer in 2024. The largest group is 65 to 74, with 190 patients. 75% of them have high cholesterol, and 67% have high blood pressure. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Mark Mentzer's median patient age at 72, with 52% women.
Mark Mentzer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Mark Mentzer's Medicare patients by sex, 2024
- Women17955%
- Men14445%
Chronic conditions among Mark Mentzer's Medicare patients, 2024
- High cholesterol75%
- High blood pressure67%
- Arthritis41%
- Diabetes24%
- Ischemic heart disease21%
- Anxiety17%
- Osteoporosis16%
- Cancer15%
Share of Medicare patients with each condition. A patient can have several.
Mark Mentzer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women52%
- Men48%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Mark Thomas Mentzer wrote 213 Medicare Part D claims in 2024
In 2024, Mark Mentzer wrote 213 Medicare Part D claims for 70 patients. 53% of them were for generic drugs.
Mark Mentzer's Part D claims by kind of drug, 2024
- Generic112 claims53%
- Brand-name101 claims47%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Mark Thomas Mentzer ranks in the 66th percentile for cataract surgery in Medicare
Mark Mentzer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 58 procedures of cataract surgery by Mark Mentzer, more than 66% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Mark Mentzer ranks in Medicare procedure volume
- Cataract surgery
- 66th percentile58 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Mark Thomas Mentzer received $110 in industry payments in 2025
CMS Open Payments shows 2 general payments to Mark Mentzer from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. RxSight Inc paid the most, $91.
Companies that paid Mark Mentzer the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Mark Thomas Mentzer graduated from Illinois College of Optometry at Chicago
Mark Mentzer graduated from Illinois College of Optometry at Chicago in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Mark Thomas Mentzer's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Mark Thomas Mentzer
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Mark Thomas Mentzer's NPI number?
Mark Thomas Mentzer's NPI number is 1184813305. It was assigned on October 24, 2007, and it is active in the NPI Registry.
What does Mark Thomas Mentzer specialize in?
Mark Thomas Mentzer is an optometrist in Hiawatha, Iowa. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Mark Thomas Mentzer practice?
Mark Mentzer practices at 2200 Blairsferry Xing, Hiawatha, IA 52233. Mark Mentzer's primary practice is Mark T Mentzer OD in Hiawatha, Iowa. Dmand AI also links Mark Mentzer to 1 physician office.
What is Mark Thomas Mentzer's office phone number?
The practice phone on file for Mark Mentzer is (319) 294-9546.
What is Mark Thomas Mentzer's medical license number?
Mark Mentzer holds Iowa license 01912.
Does Mark Thomas Mentzer accept Medicare?
Yes. CMS lists Mark Mentzer as accepting Medicare assignment.
How many Medicare patients does Mark Thomas Mentzer see?
CMS counts 323 Medicare patients who saw Mark Mentzer in 2024, with an average age of 74.
Where did Mark Thomas Mentzer go to medical school?
Mark Mentzer graduated from Illinois College of Optometry at Chicago in 1989.
Has Mark Thomas Mentzer received payments from drug or device companies?
CMS Open Payments shows $110 in general payments to Mark Mentzer from 2 companies from 2025 to 2025. The largest total came from RxSight Inc.
How long has Mark Thomas Mentzer been practicing?
Mark Mentzer graduated from medical school in 1989, 37 years ago.
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