2026 NPPES data Optometrist NPI 1942613575 O.D.
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David Lam, O.D.

Optometrist in Gilroy, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
253
Medicare Part D claims · 61 beneficiaries · Optometrist avg: 257
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
80.6/100
▼ 3 pts below national avg 83.1 · [object Object]

What the federal data shows

David Lam, O.D. reported a CMS MIPS final score of 80.6/100 — below the 83.1 national average — and filed 253 Medicare Part D claims in 2023.

80.6/100
MIPS score · -3 vs avg
253
Part D claims, 2023
83%
generic prescribing

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) — no proprietary rating or editorial opinion is applied.

David Lam, O.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

81 33rd percentile higher than 33% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

What does the federal data show about David Lam, O.D.?

Near national average

NPI registry status

Active

Issued 06/11/2014

NPI 1942613575

Primary specialty

Optometrist

High-volume

60,463 US NPIs in this specialty

Medicare Part D claims

253 2% vs specialty avg

2023 prescription claims

Specialty avg: 257

MIPS final score

80.6/100 2.5 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Optometrist compares to other specialties among California providers

California providers

Optometrist share within California

1. Optometrist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Optometrist share within California

Medicare quality performance — MIPS

David Lam, O.D.'s 2023 MIPS final score plotted against the Optometrist national average

Near national average
MIPS Final Score
80.6/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Optometrist) — 80.6/100 vs national avg 83.1

0%100%National avg83%80.6%
MIPS final score (Optometrist) — 80.6/100 vs national avg 83.1

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

David Lam, O.D. appears in the CMS NPPES registry as a Optometrist provider holding O.D. credentials at 7475 CAMINO ARROYO, Gilroy, CA, 95020, with a listed phone of (888) 334-1000. NPI 1942613575 was issued on 06/11/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Lam most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 253 prescription claims written by this provider, covering 61 Medicare beneficiaries and totaling roughly $14K in drug spend, split 17% brand-name and 83% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 80.6/100 for the 2023 performance year (Quality 67.4, Cost 46.5), compared with the national average of 83.1.

Optometrist is a high-volume specialty nationwide, with 60,463 enrolled providers across 56 states and an average of 257 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

7475 CAMINO ARROYO
Gilroy, CA 95020

Provider Details

NPI 1942613575
Specialty Optometrist
Credentials O.D.
Gender Male
NPI Issued 06/11/2014

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

80.5834
Final Score
Avg: 83.1
67.4314
Quality
46.5098
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where David Lam, O.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

County OF Santa Clara
Gilroy, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to David Lam, O.D.. To verify David Lam, O.D.'s current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

David Lam, O.D. — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 253 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

253
Total Claims
$14K
Total Drug Cost
61
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
487
Total Day Supply
14,055
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$9K
Generic Drug Cost
$5K

Patient Demographics

Average Patient Age
71.7 years
Avg HCC Risk Score
1.30
Gender Split
64% female / 36% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

What David Lam, O.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Latanoprost
118
Timolol Maleate
26
Ketorolac Tromethamine
24
Olopatadine Hcl
19
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
15
Brimonidine Tartrate
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Optometrist Overview

How David Lam, O.D. fits within the Optometrist landscape nationally.

60,463
Optometrist Providers in US
56
States with Optometrist
257
Avg Claims per Provider

David Lam, O.D.'s 253 claims are below the specialty average of 257.

Nearby Optometrist Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Lam.

Compare Optometrist nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Optometrist peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is David Lam, O.D.'s specialty?
David Lam, O.D. specializes in Optometrist and practices in Gilroy, California. Credentials: O.D..
How much does David Lam, O.D. prescribe under Medicare Part D?
In 2023, David Lam, O.D. wrote 253 Medicare Part D claims totaling $14K in drug costs for 61 beneficiaries.
What is David Lam, O.D.'s Medicare quality score?
David Lam, O.D. has a CMS MIPS Final Score of 80.6/100 (Quality: 67.4, Cost: 46.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is David Lam, O.D. located?
David Lam, O.D. is located at 7475 CAMINO ARROYO, Gilroy, CA, 95020. Phone: (888) 334-1000.
What is David Lam, O.D.'s NPI number?
David Lam, O.D.'s National Provider Identifier (NPI) is 1942613575, issued on 06/11/2014.
Does David Lam, O.D. prescribe more brand-name or generic drugs?
David Lam, O.D.'s prescribing is 17% brand-name and 83% generic drugs by claim count, with $9K in brand drug costs.
How many Optometrist providers are there in the US?
There are 60,463 Optometrist providers across 56 states in the US. The average Optometrist provider writes 257 Medicare Part D claims per year.
What drugs does David Lam, O.D. prescribe most often?
Based on 2023 Medicare Part D data, David Lam, O.D.'s most frequently prescribed drugs include Latanoprost, Timolol Maleate, Ketorolac Tromethamine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does David Lam, O.D. accept Medicare?
David Lam, O.D. appears in CMS Medicare data with 253 Part D claims and 61 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify David Lam, O.D.'s credentials?
David Lam, O.D.'s NPI is 1942613575 with credentials O.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology