William L. Olson, OD
- Medicare patients, 2024
- 193
- Part D claims, 2024
- 62
- Industry payments
- $67
- Affiliated sites
- 1
- Medical groups
- 3
- Practice address
- 249 Hartford Ave, Bellingham, MA 02019
- Practice phone
- Call (978) 208-2390
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
City Eye
Bellingham, Massachusetts
Find William Olson'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 L. Olson is an optometrist in Bellingham, Massachusetts
William Olson practices at City Eye in Bellingham, Massachusetts.
William Olson's NPI, 1427029875, was assigned on February 1, 2006. William Olson graduated from New England College of Optometry in 1989. William Olson holds Massachusetts license 3534.
- NPI
- 1427029875NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7315998275
- NPI enumeration date
- February 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (978) 208-2390
- 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)
William L. Olson practices at City Eye in Bellingham, Massachusetts
William Olson's primary practice is City Eye, at 249 Hartford Ave, Bellingham, MA 02019 in Norfolk County. The practice phone is (978) 208-2390.
- City Eye249 Hartford Ave, Bellingham, MA 02019 · Norfolk CountyPhone(978) 208-2390
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
William L. Olson is affiliated with 2 sites of care and 3 medical groups
William Olson's primary practice is City Eye in Bellingham, Massachusetts. Dmand AI also links William Olson to 3 medical groups and 1 group practice or clinic, 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 L. Olson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Olson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| City Eye | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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William L. Olson is one of 1,098 optometrists in Massachusetts
Optometrist is William Olson's primary specialty in the NPI Registry, under taxonomy code 152W00000X. William Olson is licensed in Massachusetts.
Specialties and state licenses
- Optometrist, MassachusettsPrimary
Optometrists near William Olson
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 L. Olson treated 193 Medicare patients in 2024, average age 76
CMS counts 193 Medicare patients who saw William Olson in 2024. The largest group is 75 to 84, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 10% are also on Medicaid. Their average risk score is 0.92, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Olson's median patient age at 56, with 64% women.
William Olson's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
William Olson's Medicare patients by sex, 2024
- Women11359%
- Men8041%
Chronic conditions among William Olson's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis42%
- Diabetes24%
- Anxiety22%
- Cancer20%
- Ischemic heart disease18%
- Mood disorders15%
Share of Medicare patients with each condition. A patient can have several.
William Olson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women64%
- Men35%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William L. Olson wrote 62 Medicare Part D claims in 2024
In 2024, William Olson wrote 62 Medicare Part D claims for 21 patients. 74% of them were for generic drugs.
William Olson's Part D claims by kind of drug, 2024
- Generic46 claims74%
- Brand-name16 claims26%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How William L. Olson takes part in Medicare
William Olson accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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William L. Olson received $67 in industry payments in 2025
CMS Open Payments shows 2 general payments to William Olson from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. CooperVision Inc. paid the most, $52.
Companies that paid William Olson 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 L. Olson graduated from New England College of Optometry
William Olson graduated from New England College of Optometry in 1989.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for William L. Olson'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) |
| 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 L. Olson
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 L. Olson's NPI number?
William L. Olson's NPI number is 1427029875. It was assigned on February 1, 2006, and it is active in the NPI Registry.
What does William L. Olson specialize in?
William L. Olson is an optometrist in Bellingham, Massachusetts. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does William L. Olson practice?
William Olson practices at 249 Hartford Ave, Bellingham, MA 02019. William Olson's primary practice is City Eye in Bellingham, Massachusetts. Dmand AI also links William Olson to 3 medical groups and 1 group practice or clinic.
What is William L. Olson's office phone number?
The practice phone on file for William Olson is (978) 208-2390.
What is William L. Olson's medical license number?
William Olson holds Massachusetts license 3534.
Does William L. Olson accept Medicare?
Yes. CMS lists William Olson as accepting Medicare assignment.
How many Medicare patients does William L. Olson see?
CMS counts 193 Medicare patients who saw William Olson in 2024, with an average age of 76.
Where did William L. Olson go to medical school?
William Olson graduated from New England College of Optometry in 1989.
Has William L. Olson received payments from drug or device companies?
CMS Open Payments shows $67 in general payments to William Olson from 2 companies from 2025 to 2025. The largest total came from CooperVision Inc.
How long has William L. Olson been practicing?
William Olson graduated from medical school in 1989, 37 years ago.
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