William Cheon, OD
NPI 1811510795 · Optometrist · Marlborough, MA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Cheon, OD is a Optometrist provider in Marlborough, MA (NPI 1811510795).
Provider details
- NPI number
- 1811510795
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Eye and Vision Services Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
3,361 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Problem Focused Exam of Visual System92012 | 1,097 | $96 |
| Established Patient Complete Exam of Visual System92014 | 994 | $135 |
| New Patient Complete Exam of Visual System92004 | 615 | $159 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 470 | $77 |
| Extended Exam of the Back Part of the Eye With Optic Nerve Drawing92202 | 108 | $16 |
| Ultrasound Scan of Cornea to Determine Thickness76514 | 62 | $12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-05-26
- Last updated
- 2020-10-29
- Certified
- 2020-10-29
Frequently asked questions
- What is William Cheon's NPI number?
- William Cheon's National Provider Identifier (NPI) is 1811510795, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Cheon's specialty?
- William Cheon is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is William Cheon located?
- William Cheon's practice location on file with NPPES is 84 Matheson Dr, Marlborough, MA 01752-4597.
- What is William Cheon's phone number?
- The practice phone number listed in the NPPES registry for William Cheon is (775) 275-4127.
- Does William Cheon accept Medicare?
- William Cheon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Cheon's NPI active?
- Yes — William Cheon's NPI (1811510795) is active in the NPPES registry as of the last update on 2020-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.