Liana Lam, O.D.
NPI 1437291028 · Optometrist · Petaluma, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Liana Lam, O.D. is a Optometrist provider in Petaluma, CA (NPI 1437291028).
Provider details
- NPI number
- 1437291028
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- O.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 10706T (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 tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 333 | 135 |
| Timolol Maleate | 44 | 15 |
| Levobunolol Hcl | 20 | — |
| Cyclosporine | 18 | — |
| Brimonidine Tartrate | 16 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 13 | — |
| Dorzolamide Hcl | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$122 across 1 record (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
- 2007-02-12
- Last updated
- 2022-01-03
Frequently asked questions
- What is Liana Lam's NPI number?
- Liana Lam's National Provider Identifier (NPI) is 1437291028, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Liana Lam's specialty?
- Liana Lam is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Liana Lam located?
- Liana Lam's practice location on file with NPPES is 3900 Lakeville Hwy, Petaluma, CA 94954-5698.
- What is Liana Lam's phone number?
- The practice phone number listed in the NPPES registry for Liana Lam is (707) 765-3930.
- Does Liana Lam accept Medicare?
- Liana Lam is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Liana Lam's NPI active?
- Yes — Liana Lam's NPI (1437291028) is active in the NPPES registry as of the last update on 2022-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.