Dr. Nathan C. Hamaker, MD
- Medicare services, 2024
- 1,630
- Medicare patients, 2024
- 794
- Part D claims, 2024
- 2,701
- Hospital affiliations
- 1
- Industry payments
- $226
- Practice address
- 1600 N 2nd St, Clinton, MO 64735
- Practice phone
- Call (660) 885-5511
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Hamaker'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.
Dr. Nathan C. Hamaker is an ophthalmologist in Clinton, Missouri
Dr. Hamaker practices at Golden Valley Memorial Healthcare in Clinton, Missouri, part of Golden Valley Memorial Healthcare.
Dr. Hamaker's NPI, 1104852292, was assigned on June 23, 2006. Dr. Hamaker graduated from University of Texas Medical School at Houston in 2003. Dr. Hamaker holds Missouri license 2007010850.
- NPI
- 1104852292NPI Registry (opens in a new tab)
- NPI enumeration date
- June 23, 2006
- NPI status
- Active
- Practice phone
- (660) 885-5511
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 49
- Medical school graduation
- 2003
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Nathan C. Hamaker practices at Golden Valley Memorial Healthcare in Clinton, Missouri
Dr. Hamaker's primary practice is Golden Valley Memorial Healthcare, at 1600 N 2nd St, Clinton, MO 64735 in Henry County. The practice phone is (660) 885-5511.
- Golden Valley Memorial Healthcare1600 N 2nd St, Clinton, MO 64735 · Henry CountyPhone(660) 885-5511
Source: Dmand AI Affiliation Data
Dr. Nathan C. Hamaker is affiliated with 2 sites of care and 1 medical group
Dr. Hamaker's primary practice is Golden Valley Memorial Healthcare in Clinton, Missouri, part of Golden Valley Memorial Healthcare. Dmand AI also links Dr. Hamaker to 1 group practice or clinic and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nathan C. Hamaker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hamaker practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Golden Valley Memorial Healthcare | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Golden Valley Memorial Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nathan C. Hamaker is one of 270 ophthalmologists in Missouri
Ophthalmology is Dr. Hamaker's primary specialty in the NPI Registry, under taxonomy code 207W00000X. Dr. Hamaker is licensed in Missouri.
Specialties and state licenses
- Ophthalmology, MissouriPrimary
Ophthalmologists near Dr. Hamaker
Counts of ophthalmologists 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
Dr. Nathan C. Hamaker billed Medicare for 1,630 services in 2024
CMS data shows 1,630 Medicare services from Dr. Hamaker across 14 procedure codes in 2024, for 794 Medicare patients. Medicare paid $122,808 for them.
Dr. Hamaker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 2,4122024: 1,37343%
- Surgery
- 2023: 3092024: 12958%
- Imaging
- 2023: 1062024: 9114%
- Office and hospital visits
- 2023: 02024: 37
Where Dr. Hamaker's Medicare services took place, 2024
- In an office1,52393%
- In a facility1077%
Dr. Hamaker compared with the Missouri median for ophthalmologists, 2024
- Dr. Hamaker
- Missouri median
- Medicare services
- 1,630vs 1,582Close to median
- Medicare patients
- 794vs 63026% above
- Part D claims
- 2,650vs 7033.8 times
Medians across 286 ophthalmologists in Missouri with Dmand AI profiles that report each measure.
Dr. Hamaker's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Hamaker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Hamaker and other ophthalmologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nathan C. Hamaker treated 794 Medicare patients in 2024, average age 77
CMS counts 794 Medicare patients who saw Dr. Hamaker in 2024. The largest group is 75 to 84, with 302 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 28% are also on Medicaid. Their average risk score is 1.39, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Hamaker's median patient age at 78, with 65% women.
Dr. Hamaker's Medicare patients by age, 2024
Dr. Hamaker's Medicare patients by sex, 2024
- Women48461%
- Men31039%
Chronic conditions among Dr. Hamaker's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis46%
- Diabetes38%
- Mood disorders37%
- Depression36%
- Ischemic heart disease33%
- Chronic kidney disease32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Hamaker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 78
Patient panel by sex, all payers
- Women65%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan C. Hamaker wrote 2,701 Medicare Part D claims in 2024
In 2024, Dr. Hamaker wrote 2,701 Medicare Part D claims for 562 patients. 85% of them were for generic drugs. CMS names the drug for 2,650 of them, across 15 drugs with 11 or more claims each, at $112,054 in total drug cost. In 2023, CMS named 3,262 claims across 17 drugs.
Dr. Hamaker's Part D claims by kind of drug, 2024
- Generic2,303 claims85%
- Brand-name398 claims15%
Dr. Hamaker's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Hamaker's Part D claims, 2024
- Antibiotics0%11 of 2,701 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3,2622024: 2,65019%
Drugs named by CMS: 15 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Nathan C. Hamaker received $226 in industry payments from 2016 to 2024
CMS Open Payments shows 9 general payments to Dr. Hamaker from 7 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Ocular Therapeutix, Inc. paid the most, $81.
General payments to Dr. Hamaker by program year, 2016 to 2024
Companies that paid Dr. Hamaker the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathan C. Hamaker graduated from University of Texas Medical School at Houston
Dr. Hamaker graduated from University of Texas Medical School at Houston in 2003.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathan C. Hamaker'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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 and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (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 Dr. Nathan C. Hamaker
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nathan C. Hamaker's NPI number?
Dr. Nathan C. Hamaker's NPI number is 1104852292. It was assigned on June 23, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan C. Hamaker?
Dr. Nathan C. Hamaker is an ophthalmologist in Clinton, Missouri. The primary specialty in the NPI Registry is Ophthalmology Physician (taxonomy code 207W00000X).
Where does Dr. Nathan C. Hamaker practice?
Dr. Hamaker practices at 1600 N 2nd St, Clinton, MO 64735. Dr. Hamaker's primary practice is Golden Valley Memorial Healthcare in Clinton, Missouri, part of Golden Valley Memorial Healthcare. Dmand AI also links Dr. Hamaker to 1 group practice or clinic and 1 medical group.
What is Dr. Nathan C. Hamaker's office phone number?
The practice phone on file for Dr. Hamaker is (660) 885-5511.
What is Dr. Nathan C. Hamaker's medical license number?
Dr. Hamaker holds Missouri license 2007010850.
Which hospitals is Dr. Nathan C. Hamaker affiliated with?
Dr. Hamaker practices at Golden Valley Memorial Healthcare in Clinton, Missouri.
Does Dr. Nathan C. Hamaker accept Medicare?
Yes. CMS data shows Dr. Hamaker billed Medicare for 1,630 services in 2024.
How many Medicare patients does Dr. Nathan C. Hamaker see?
CMS counts 794 Medicare patients who saw Dr. Hamaker in 2024, with an average age of 77.
What services does Dr. Nathan C. Hamaker bill to Medicare?
In 2024, Dr. Hamaker's most billed Medicare services were eye exam or test (92014), eye exam or test (92012) and eye exam or test (92133).
Where did Dr. Nathan C. Hamaker go to medical school?
Dr. Hamaker graduated from University of Texas Medical School at Houston in 2003.
Show 3 more questionsShow fewer questions
What drugs does Dr. Nathan C. Hamaker prescribe most?
In 2024 Medicare Part D data, Dr. Hamaker's most prescribed drugs by claims were Latanoprost, Dorzolamide-Timolol and Neomycin-Polymyxin-Dexameth.
Has Dr. Nathan C. Hamaker received payments from drug or device companies?
CMS Open Payments shows $226 in general payments to Dr. Hamaker from 7 companies from 2016 to 2024. The largest total came from Ocular Therapeutix, Inc.
How long has Dr. Nathan C. Hamaker been practicing?
Dr. Hamaker graduated from medical school in 2003, 23 years ago.
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