Nathan Robert Slezak, OD
- Medicare patients, 2024
- 363
- Part D claims, 2024
- 251
- Industry payments
- $163
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 102 E Main St, Boyne City, MI 49712
- Practice phone
- Call (989) 732-6261
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gaylord Eye Care Center Inc
Boyne City, Michigan
Find Nathan Slezak'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.
Nathan Robert Slezak is an optometrist in Boyne City, Michigan
Nathan Slezak practices at Gaylord Eye Care Center Inc in Boyne City, Michigan.
Nathan Slezak's NPI, 1821300088, was assigned on July 5, 2010. Nathan Slezak holds Michigan license 4901004573.
- NPI
- 1821300088NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4385839190
- NPI enumeration date
- July 5, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (989) 732-6261
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Nathan Robert Slezak practices at Gaylord Eye Care Center Inc in Boyne City, Michigan
Nathan Slezak's primary practice is Gaylord Eye Care Center Inc, at 102 E Main St, Boyne City, MI 49712 in Charlevoix County. The practice phone is (989) 732-6261.
- Gaylord Eye Care Center Inc102 E Main St, Boyne City, MI 49712 · Charlevoix CountyPhone(989) 732-6261
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Nathan Robert Slezak is affiliated with 2 sites of care and 1 medical group
Nathan Slezak's primary practice is Gaylord Eye Care Center Inc in Boyne City, Michigan. Dmand AI also links Nathan Slezak to 1 group practice or clinic and 1 medical group, each 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 Nathan Robert Slezak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Nathan Slezak practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gaylord Eye Care Center Inc | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Nathan Robert Slezak is one of 1,416 optometrists in Michigan
Optometrist is Nathan Slezak's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Nathan Slezak is licensed in Michigan.
Specialties and state licenses
- Optometrist, MichiganPrimary
Optometrists near Nathan Slezak
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
Nathan Robert Slezak treated 363 Medicare patients in 2024, average age 74
CMS counts 363 Medicare patients who saw Nathan Slezak in 2024. The largest group is 65 to 74, with 196 patients. 70% of them have high cholesterol, and 69% have high blood pressure. Their average risk score is 0.85, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Nathan Slezak's median patient age at 71, with 56% women.
Nathan Slezak's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Nathan Slezak's Medicare patients by sex, 2024
- Women20055%
- Men16345%
Chronic conditions among Nathan Slezak's Medicare patients, 2024
- High cholesterol70%
- High blood pressure69%
- Arthritis40%
- Diabetes26%
- Ischemic heart disease17%
- Mood disorders15%
- Anxiety14%
- Cancer14%
Share of Medicare patients with each condition. A patient can have several.
Nathan Slezak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Nathan Robert Slezak wrote 251 Medicare Part D claims in 2024
In 2024, Nathan Slezak wrote 251 Medicare Part D claims for 98 patients. 69% of them were for generic drugs.
Nathan Slezak's Part D claims by kind of drug, 2024
- Generic173 claims69%
- Brand-name78 claims31%
Drug classes CMS tracks in Nathan Slezak's Part D claims, 2024
- Antibiotics5%13 of 251 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Nathan Robert Slezak ranks in the 55th percentile for cataract surgery in Medicare
Nathan Slezak accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 33 procedures of cataract surgery by Nathan Slezak, more than 55% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Nathan Slezak ranks in Medicare procedure volume
- Cataract surgery
- 55th percentile33 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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Nathan Robert Slezak received $163 in industry payments in 2025
CMS Open Payments shows 6 general payments to Nathan Slezak from 4 drug and device companies in 2025. Food and beverage make up the largest share, 77% of the total. Alcon Laboratories Inc paid the most, $79.
General payments to Nathan Slezak by kind, 2025 to 2025
- Food and beverage$12577%
- Entertainment$3723%
Companies that paid Nathan Slezak the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Nathan Robert Slezak'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) |
| 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 Nathan Robert Slezak
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Nathan Robert Slezak's NPI number?
Nathan Robert Slezak's NPI number is 1821300088. It was assigned on July 5, 2010, and it is active in the NPI Registry.
What does Nathan Robert Slezak specialize in?
Nathan Robert Slezak is an optometrist in Boyne City, Michigan. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Nathan Robert Slezak practice?
Nathan Slezak practices at 102 E Main St, Boyne City, MI 49712. Nathan Slezak's primary practice is Gaylord Eye Care Center Inc in Boyne City, Michigan. Dmand AI also links Nathan Slezak to 1 group practice or clinic and 1 medical group.
What is Nathan Robert Slezak's office phone number?
The practice phone on file for Nathan Slezak is (989) 732-6261.
What is Nathan Robert Slezak's medical license number?
Nathan Slezak holds Michigan license 4901004573.
Does Nathan Robert Slezak accept Medicare?
Yes. CMS lists Nathan Slezak as accepting Medicare assignment.
How many Medicare patients does Nathan Robert Slezak see?
CMS counts 363 Medicare patients who saw Nathan Slezak in 2024, with an average age of 74.
Has Nathan Robert Slezak received payments from drug or device companies?
CMS Open Payments shows $163 in general payments to Nathan Slezak from 4 companies from 2025 to 2025. The largest total came from Alcon Laboratories Inc.
How long has Nathan Robert Slezak been practicing?
Nathan Slezak graduated from medical school in 2010, 16 years ago.
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