Charles C. Assell III, OD
- Medicare patients, 2024
- 194
- Part D claims, 2024
- 233
- Industry payments
- $234
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 1120 Hunter St, Lombard, IL 60148
- Practice phone
- Call (847) 952-7181
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mansoor Khan MD SC
Lombard, Illinois
Find Charles Assell'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.
Charles C. Assell III is an optometrist in Lombard, Illinois
Charles Assell practices at Mansoor Khan MD SC in Lombard, Illinois.
Charles Assell's NPI, 1962574137, was assigned on November 14, 2006. Charles Assell graduated from Illinois College of Optometry at Chicago in 2004.
- NPI
- 1962574137NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375512197
- NPI enumeration date
- November 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (847) 952-7181
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Charles C. Assell III practices at Mansoor Khan MD SC in Lombard, Illinois
Charles Assell's primary practice is Mansoor Khan MD SC, at 1120 Hunter St, Lombard, IL 60148 in Dupage County. The practice phone is (847) 952-7181.
- Mansoor Khan MD SC1120 Hunter St, Lombard, IL 60148 · Dupage CountyPhone(847) 952-7181
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Charles C. Assell III is affiliated with 2 sites of care and 1 medical group
Charles Assell's primary practice is Mansoor Khan MD SC in Lombard, Illinois. Dmand AI also links Charles Assell 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 Charles C. Assell III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Charles Assell practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mansoor Khan MD SC | 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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Charles C. Assell III is one of 2,194 optometrists in Illinois
Optometrist is Charles Assell's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Charles Assell has a license on file in Illinois.
Specialties and state licenses
- Optometrist, Illinois
Optometrists near Charles Assell
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
Charles C. Assell III treated 194 Medicare patients in 2024, average age 75
CMS counts 194 Medicare patients who saw Charles Assell in 2024. The largest group is 65 to 74, with 110 patients. 75% of them have high cholesterol, and 63% have high blood pressure. Their average risk score is 0.82, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Charles Assell's median patient age at 68, with 56% women.
Charles Assell's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Charles Assell's Medicare patients by sex, 2024
- Women11459%
- Men8041%
Chronic conditions among Charles Assell's Medicare patients, 2024
- High cholesterol75%
- High blood pressure63%
- Arthritis41%
- Ischemic heart disease22%
- Diabetes19%
- Osteoporosis19%
- Chronic kidney disease15%
- Anxiety14%
Share of Medicare patients with each condition. A patient can have several.
Charles Assell's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women56%
- Men43%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Charles C. Assell III wrote 233 Medicare Part D claims in 2024
In 2024, Charles Assell wrote 233 Medicare Part D claims for 53 patients. 63% of them were for generic drugs.
Charles Assell's Part D claims by kind of drug, 2024
- Generic147 claims63%
- Brand-name86 claims37%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Charles C. Assell III ranks in the 32nd percentile for cataract surgery in Medicare
Charles Assell accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of cataract surgery by Charles Assell, more than 32% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Charles Assell ranks in Medicare procedure volume
- Cataract surgery
- 32nd percentile11 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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Charles C. Assell III received $234 in industry payments in 2025
CMS Open Payments shows 8 general payments to Charles Assell from 4 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. CooperVision Inc. paid the most, $67.
Companies that paid Charles Assell the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Charles C. Assell III graduated from Illinois College of Optometry at Chicago
Charles Assell graduated from Illinois College of Optometry at Chicago in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Charles C. Assell III'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 Charles C. Assell III
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Charles C. Assell III's NPI number?
Charles C. Assell III's NPI number is 1962574137. It was assigned on November 14, 2006, and it is active in the NPI Registry.
What does Charles C. Assell III specialize in?
Charles C. Assell III is an optometrist in Lombard, Illinois. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Charles C. Assell III practice?
Charles Assell practices at 1120 Hunter St, Lombard, IL 60148. Charles Assell's primary practice is Mansoor Khan MD SC in Lombard, Illinois. Dmand AI also links Charles Assell to 1 group practice or clinic and 1 medical group.
What is Charles C. Assell III's office phone number?
The practice phone on file for Charles Assell is (847) 952-7181.
Does Charles C. Assell III accept Medicare?
Yes. CMS lists Charles Assell as accepting Medicare assignment.
How many Medicare patients does Charles C. Assell III see?
CMS counts 194 Medicare patients who saw Charles Assell in 2024, with an average age of 75.
Where did Charles C. Assell III go to medical school?
Charles Assell graduated from Illinois College of Optometry at Chicago in 2004.
Has Charles C. Assell III received payments from drug or device companies?
CMS Open Payments shows $234 in general payments to Charles Assell from 4 companies from 2025 to 2025. The largest total came from CooperVision Inc.
How long has Charles C. Assell III been practicing?
Charles Assell graduated from medical school in 2004, 22 years ago.
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