William Mark Sigmon, OD
- Medicare patients, 2024
- 66
- Part D claims, 2024
- 170
- Industry payments
- $77
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 2217 Old Nc, Hillsborough, NC 27278
- Practice phone
- Call (919) 544-2020
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Triangle Visions Optometry
Hillsborough, North Carolina
Find William Sigmon'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.
William Mark Sigmon is an optometrist in Hillsborough, North Carolina
William Sigmon practices at Triangle Visions Optometry in Hillsborough, North Carolina.
William Sigmon's NPI, 1205821550, was assigned on September 13, 2005. William Sigmon graduated from Pennsylvania College of Optometry in 1986. William Sigmon holds North Carolina license 1232.
- NPI
- 1205821550NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698851921
- NPI enumeration date
- September 13, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (919) 544-2020
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 66
- Medical school graduation
- 1986
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
William Mark Sigmon practices at Triangle Visions Optometry in Hillsborough, North Carolina
William Sigmon's primary practice is Triangle Visions Optometry, at 2217 Old Nc, Hillsborough, NC 27278 in Orange County. The practice phone is (919) 544-2020.
- Triangle Visions Optometry2217 Old Nc, Hillsborough, NC 27278 · Orange CountyPhone(919) 544-2020
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
William Mark Sigmon is affiliated with 3 sites of care and 2 medical groups
William Sigmon's primary practice is Triangle Visions Optometry in Hillsborough, North Carolina. Dmand AI also links William Sigmon to 2 group practices and clinics and 2 medical groups, 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 William Mark Sigmon's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Sigmon practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Triangle Visions Optometry | Available with a free account |
| +2 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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William Mark Sigmon is one of 1,111 optometrists in North Carolina
Optometrist is William Sigmon's primary specialty in the NPI Registry, under taxonomy code 152W00000X. William Sigmon is licensed in North Carolina.
Specialties and state licenses
- Optometrist, North CarolinaPrimary
Optometrists near William Sigmon
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
William Mark Sigmon treated 66 Medicare patients in 2024, average age 75
CMS counts 66 Medicare patients who saw William Sigmon in 2024. The largest group is 65 to 74, with 32 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 1.32, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Sigmon's median patient age at 70, with 55% women.
William Sigmon's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Sigmon's Medicare patients by sex, 2024
- Women3655%
- Men3045%
Chronic conditions among William Sigmon's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Diabetes39%
- Mood disorders27%
- Chronic kidney disease26%
- Depression26%
- Ischemic heart disease23%
Share of Medicare patients with each condition. A patient can have several.
William Sigmon's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women55%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William Mark Sigmon wrote 170 Medicare Part D claims in 2024
In 2024, William Sigmon wrote 170 Medicare Part D claims for 59 patients. 61% of them were for generic drugs.
William Sigmon's Part D claims by kind of drug, 2024
- Generic104 claims61%
- Brand-name66 claims39%
Drug classes CMS tracks in William Sigmon's Part D claims, 2024
- Antibiotics8%14 of 170 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
William Mark Sigmon ranks in the 32nd percentile for cataract surgery in Medicare
William Sigmon accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of cataract surgery by William Sigmon, more than 32% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where William Sigmon 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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William Mark Sigmon received $77 in industry payments in 2025
CMS Open Payments shows 4 general payments to William Sigmon from 3 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Johnson & Johnson Vision Care, Inc. paid the most, $28.
Companies that paid William Sigmon the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
William Mark Sigmon graduated from Pennsylvania College of Optometry
William Sigmon graduated from Pennsylvania College of Optometry in 1986.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for William Mark Sigmon'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 William Mark Sigmon
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William Mark Sigmon's NPI number?
William Mark Sigmon's NPI number is 1205821550. It was assigned on September 13, 2005, and it is active in the NPI Registry.
What does William Mark Sigmon specialize in?
William Mark Sigmon is an optometrist in Hillsborough, North Carolina. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does William Mark Sigmon practice?
William Sigmon practices at 2217 Old Nc, Hillsborough, NC 27278. William Sigmon's primary practice is Triangle Visions Optometry in Hillsborough, North Carolina. Dmand AI also links William Sigmon to 2 group practices and clinics and 2 medical groups.
What is William Mark Sigmon's office phone number?
The practice phone on file for William Sigmon is (919) 544-2020.
What is William Mark Sigmon's medical license number?
William Sigmon holds North Carolina license 1232.
Does William Mark Sigmon accept Medicare?
Yes. CMS lists William Sigmon as accepting Medicare assignment.
How many Medicare patients does William Mark Sigmon see?
CMS counts 66 Medicare patients who saw William Sigmon in 2024, with an average age of 75.
Where did William Mark Sigmon go to medical school?
William Sigmon graduated from Pennsylvania College of Optometry in 1986.
Has William Mark Sigmon received payments from drug or device companies?
CMS Open Payments shows $77 in general payments to William Sigmon from 3 companies from 2025 to 2025. The largest total came from Johnson & Johnson Vision Care, Inc.
How long has William Mark Sigmon been practicing?
William Sigmon graduated from medical school in 1986, 40 years ago.
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