William Feriend, OD
NPI 1083348353 · Optometrist · Chicago, IL
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Feriend, OD is a Optometrist provider in Chicago, IL (NPI 1083348353).
Provider details
- NPI number
- 1083348353
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 046011648 (IL)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
3 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
49 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 32 | $132 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 17 | $94 |
Typical Medicare-allowed amounts for these services range $94–$132 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,288 across 19 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-07-13
- Last updated
- 2024-02-10
- Certified
- 2024-02-10
Frequently asked questions
- What is William Feriend's NPI number?
- William Feriend's National Provider Identifier (NPI) is 1083348353, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Feriend's specialty?
- William Feriend is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is William Feriend located?
- William Feriend's practice location on file with NPPES is 1926 W Irving Park Rd, Chicago, IL 60613-2408.
- What is William Feriend's phone number?
- The practice phone number listed in the NPPES registry for William Feriend is (312) 787-2020.
- Does William Feriend accept Medicare?
- William Feriend is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Feriend's NPI active?
- Yes — William Feriend's NPI (1083348353) is active in the NPPES registry as of the last update on 2024-02-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.