William Kiernan, OD
NPI 1174548291 · Optometrist · Loma Linda, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Kiernan, OD is a Optometrist provider in Loma Linda, CA (NPI 1174548291).
Provider details
- NPI number
- 1174548291
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- 7661T (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
547 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 | 547 | $93 |
Typical Medicare-allowed amounts for these services range $93–$93 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2025-04-01
- Certified
- 2025-04-01
Frequently asked questions
- What is William Kiernan's NPI number?
- William Kiernan's National Provider Identifier (NPI) is 1174548291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Kiernan's specialty?
- William Kiernan is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is William Kiernan located?
- William Kiernan's practice location on file with NPPES is 11370 Anderson St Ste 1800, Loma Linda, CA 92354-3450.
- What is William Kiernan's phone number?
- The practice phone number listed in the NPPES registry for William Kiernan is (909) 558-2154.
- Does William Kiernan accept Medicare?
- William Kiernan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Kiernan's NPI active?
- Yes — William Kiernan's NPI (1174548291) is active in the NPPES registry as of the last update on 2025-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.