2026 NPPES data Ophthalmology Physician NPI 1578723326 MD
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CONNIE CHEN, MD

Ophthalmology Physician in ISSAQUAH, Washington. 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
377
Medicare Part D claims · 104 beneficiaries · Ophthalmology Physician avg: 1K
Generic prescribing
56%
generic claims · 44% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$26.66
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: CONNIE CHEN, MD is a Ophthalmology Physician ([object Object]) practicing in ISSAQUAH, Washington with a Medicare Part D prescribing footprint of 377 claims across 104 beneficiaries — 44% brand-name prescribing . Industry payments of $26.66 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: CONNIE CHEN, MD filed 377 Medicare Part D claims in 2023 across ISSAQUAH, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

CONNIE CHEN, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

CONNIE CHEN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/16/2008

NPI 1578723326

Primary specialty

Ophthalmology Physician

Mid-sized

22,090 US NPIs in this specialty

Medicare Part D claims

377 73% vs specialty avg

2023 prescription claims

Specialty avg: 1,420

Specialty distribution in Washington

How Ophthalmology Physician compares to other specialties among Washington providers

Washington providers

Ophthalmology Physician share within Washington

1. Ophthalmology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Ophthalmology Physician share within Washington

Specialty board-certification context

Estimated specialty board-certified rate — Ophthalmology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Ophthalmology Physician ABMS/AOA estimate

Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Ophthalmology Physician) — ABMS / AOA estimate

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).

CONNIE CHEN, MD is a Ophthalmology Physician provider practicing in ISSAQUAH, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1578723326. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

CONNIE CHEN, MD appears in the CMS NPPES registry as a Ophthalmology Physician provider holding MD credentials at 100 NE GILMAN BLVD, ISSAQUAH, WA, 98027, with a listed phone of (425) 557-8000. NPI 1578723326 was issued on 06/16/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHEN 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 377 prescription claims written by this provider, covering 104 Medicare beneficiaries and totaling roughly $47K in drug spend, split 44% brand-name and 56% 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.

Ophthalmology Physician is a mid-sized specialty nationwide, with 22,090 enrolled providers across 56 states and an average of 1,420 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

100 NE GILMAN BLVD
ISSAQUAH, WA 98027

Provider Details

NPI 1578723326
Specialty Ophthalmology Physician
Credentials MD
Gender Female
NPI Issued 06/16/2008

Hospital and facility affiliations

Facilities where CONNIE CHEN, MD 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.

VIRGINIA MASON MEDICAL CENTER
★★★★★ 5/5
ISSAQUAH, WA
Acute Care Hospitals
CMS CCN: 500005

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

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 CONNIE CHEN, MD. Source: openpaymentsdata.cms.gov.

Total received

$27

Largest payer

AstraZeneca Pharmaceuticals LP

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 CONNIE CHEN, MD. To verify CONNIE CHEN, MD'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

CONNIE CHEN, MD — brand share 44.0%
Specialty average (est.)

44% brand-name claims vs 56% generic, on 377 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.

377
Total Claims
$47K
Total Drug Cost
104
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
617
Total Day Supply
17,268
Brand vs Generic
44% brand / 56% generic
Brand Drug Cost
$35K
Generic Drug Cost
$11K

Patient Demographics

Average Patient Age
77.4 years
Avg HCC Risk Score
1.35
Gender Split
51% female / 49% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Latanoprost
112
Prednisolone Acetate
48
Dorzolamide-Timolol
Dorzolamide Hcl/Timolol Maleat
25
Timolol Maleate
20
Ciprofloxacin Hcl
16
Restasis
Cyclosporine
16
Atropine Sulfate
13
Ilevro
Nepafenac
13

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

Ophthalmology Physician Overview

How CONNIE CHEN, MD fits within the Ophthalmology Physician landscape nationally.

22,090
Ophthalmology Physician Providers in US
56
States with Ophthalmology Physician
1,420
Avg Claims per Provider

CONNIE CHEN, MD's 377 claims are below the specialty average of 1,420.

Nearby Ophthalmology Physician Providers in Washington

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

Compare Ophthalmology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CONNIE CHEN, MD's specialty?
CONNIE CHEN, MD specializes in Ophthalmology Physician and practices in ISSAQUAH, Washington. Credentials: MD.
How much does CONNIE CHEN, MD prescribe under Medicare Part D?
In 2023, CONNIE CHEN, MD wrote 377 Medicare Part D claims totaling $47K in drug costs for 104 beneficiaries.
Where is CONNIE CHEN, MD located?
CONNIE CHEN, MD is located at 100 NE GILMAN BLVD, ISSAQUAH, WA, 98027. Phone: (425) 557-8000.
What is CONNIE CHEN, MD's NPI number?
CONNIE CHEN, MD's National Provider Identifier (NPI) is 1578723326, issued on 06/16/2008.
Does CONNIE CHEN, MD prescribe more brand-name or generic drugs?
CONNIE CHEN, MD's prescribing is 44% brand-name and 56% generic drugs by claim count, with $35K in brand drug costs.
How many Ophthalmology Physician providers are there in the US?
There are 22,090 Ophthalmology Physician providers across 56 states in the US. The average Ophthalmology Physician provider writes 1,420 Medicare Part D claims per year.
What drugs does CONNIE CHEN, MD prescribe most often?
Based on 2023 Medicare Part D data, CONNIE CHEN, MD's most frequently prescribed drugs include Latanoprost, Prednisolone Acetate, Dorzolamide-Timolol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CONNIE CHEN, MD accept Medicare?
CONNIE CHEN, MD appears in CMS Medicare data with 377 Part D claims and 104 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CONNIE CHEN, MD's credentials?
CONNIE CHEN, MD's NPI is 1578723326 with credentials MD. 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.
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