NPI registry status
Active
2026 NPPES data Optometrist NPI 1699708305 O.D.
Verify on CMS → Yousim Chhim, O.D.
Optometrist in Seattle, Washington.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 61,426 in Optometrist, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
50
Medicare Part D claims · Optometrist avg: 279
Generic prescribing
72%
generic claims · 28% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$366.73
2 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Yousim Chhim, O.D. filed 50 Medicare Part D claims in 2024 as an Optometrist in Seattle, Washington, prescribing 72% generic.
- 50
- Part D claims, 2024
- 72%
- generic prescribing
- $366.73
- industry payments (Sunshine Act)
- ≥0th
- pct by Part D claim volume (lower-bound band)
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.
Federal trust snapshot
What official records show about Yousim Chhim, O.D.
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1699708305), first enumerated 07/08/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 50 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$366.73 in reported industry payments (2 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Washington statewide board action statistics are published annually — these figures describe aggregate state activity, not Yousim Chhim, O.D.'s individual license status. Verify directly with the state medical board.
Source: WMC annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1699708305 · Optometrist
NPI-10 · ENUM-LEGACY · TAX-MEGA · RX-TRACE · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1699708305
- ENUM-LEGACY 2006
- TAX-MEGA 61K Optometrist
- RX-TRACE 50
- BOOK-LIGHT 1,616 in Washington
- PHOTO-ENUM Christopher Boston,… · 2006
Yousim Chhim, O.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
50 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. 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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
What does the federal data show about Yousim Chhim, O.D.?
Quality data not reportedPrimary specialty
Optometrist
Medicare Part D claims
50 82% vs specialty avg
Specialty distribution in Washington
How Optometrist compares to other specialties among Washington providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Optometrist. Verify directly:
How MIPS and board certification work
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).
Practice Address
Provider Details
| NPI | 1699708305 |
|---|---|
| Specialty | Optometrist |
| Credentials | O.D. |
| Gender | Female |
| NPI Issued | 07/08/2006 |
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Yousim Chhim, O.D.. Source: openpaymentsdata.cms.gov.
Total received
$367
Largest payer
Alcon Vision LLC
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
License & disciplinary context - Washington WMC 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 ~34K Washington medical licensees in 2023 - they are NOT specific to Yousim Chhim, O.D.. To verify Yousim Chhim, O.D.'s current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases
WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Above average
Yousim Chhim, O.D. - brand share 28.0%
Optometrist average
28% brand-name claims vs 72% generic, on 50 2024 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 2024.
50
Total Claims
$3K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 70.6
- Total Day Supply
- 1,948
- Brand vs Generic
- 28% brand / 72% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $466
Patient Demographics
- Average Patient Age
- 75.1 years
- Avg HCC Risk Score
- 1.36
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Latanoprost | 14 |
| Dorzolamide Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Optometrist Overview
How Yousim Chhim, O.D. fits within the Optometrist landscape nationally.
61,426
Optometrist Providers in US
56
States with Optometrist
279
Avg Claims per Provider
Yousim Chhim, O.D.'s 50 claims are below the specialty average of 279.
Nationwide Optometrist peers with similar MIPS or enrollment year
Two federal-record peer sets for Chhim, both outside Washington so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Optometrist Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Chhim.
One of 1,616 Optometrist providers enrolled in Washington, 5 are shown here.
Dr. Jenni Aaseby
O.D.
Shelton, WA
Dr. Meagan-Rhose Abanto
OD
Everett, WA
Dr. Jabeen Abdulla
O.D.
Tacoma, WA
Dr. James Abel
OD
Renton, WA
Dr. Christina Abercrombie
OD
Kent, WA
Compare Optometrist nationally: see state-by-state distribution →
Frequently Asked Questions
What is Yousim Chhim, O.D.'s specialty? ▼
Yousim Chhim, O.D. specializes in Optometrist and practices in Seattle, Washington. Credentials: O.D..
How much does Yousim Chhim, O.D. prescribe under Medicare Part D? ▼
In 2024, Yousim Chhim, O.D. wrote 50 Medicare Part D claims totaling $3K in drug costs for N/A beneficiaries.
Where is Yousim Chhim, O.D. located? ▼
Yousim Chhim, O.D. is located at 9985 8TH AVE SW, Seattle, WA, 98106. Phone: (206) 420-3502.
What is Yousim Chhim, O.D.'s NPI number? ▼
Yousim Chhim, O.D.'s National Provider Identifier (NPI) is 1699708305, issued on 07/08/2006.
Does Yousim Chhim, O.D. prescribe more brand-name or generic drugs? ▼
Yousim Chhim, O.D.'s prescribing is 28% brand-name and 72% generic drugs by claim count, with $2K in brand drug costs.
How many Optometrist providers are there in the US? ▼
There are 61,426 Optometrist providers across 56 states in the US. The average Optometrist provider writes 279 Medicare Part D claims per year.
What drugs does Yousim Chhim, O.D. prescribe most often? ▼
Based on 2024 Medicare Part D data, Yousim Chhim, O.D.'s most frequently prescribed drugs include Latanoprost, Dorzolamide Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Yousim Chhim, O.D. accept Medicare? ▼
Yousim Chhim, O.D. appears in CMS Medicare data with 50 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Yousim Chhim, O.D.'s credentials? ▼
Yousim Chhim, O.D.'s NPI is 1699708305 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
View source datasets and methodology notes
- 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 (2024). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- 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 August 2026 (NPPES) / 2024 (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
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.