2026 NPPES data Family Medicine Physician NPI 1538281530 MD
Verify on CMS →

Wilson Chan, MD

Family Medicine Physician in Redmond, 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 147,640 in Family Medicine Physician, 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
5K
Medicare Part D claims · 488 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
90.8/100
▲ 8 pts above national avg 83.1 · Exceptional
Industry payments
$97.19
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Wilson Chan, MD reported a CMS MIPS final score of 90.8/100 - above the 83.1 national average - and filed 4,864 Medicare Part D claims in 2023.

90.8/100
MIPS score · +8 vs avg
5K
Part D claims, 2023
92%
generic prescribing
Likely
board-certified (heuristic)

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.

Wilson Chan, MD's MIPS score vs every scored U.S. clinician

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

91 Top 40% higher than 60% 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%). Below this entry. 90+: 189,403 scored providers (40%). This entry sits in this band. 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

Where Wilson Chan, MD sits

This provider among family medicine physician peers

Across the 22,040 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Wilson Chan, MD writes more Part D claims than 65% of them and scores higher on MIPS quality than 62% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Wilson Chan, MD-Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 62
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Wilson Chan, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

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

What does the federal data show about Wilson Chan, MD?

High performer (top quartile)

NPI registry status

Active

Issued 04/03/2007

NPI 1538281530

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

4,864 42% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

90.8/100 7.7 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in Washington

How Family Medicine Physician compares to other specialties among Washington providers

Washington providers

Largest specialties in Washington (% of in-state providers)

Mental Health Counselor - 8.6%Mental Health Counselor8.6%Massage Therapist - 6.5%Massage Therapist6.5%Counselor - 5.7%Counselor5.7%Behavior Technician - 4.5%Behavior Technician4.5%Pharmacist - 4%Pharmacist4%Physical Therapist - 3.6%Physical Therapist3.6%Family Medicine Physician - 2.6%Family Medicine Physician2.6%
Largest specialties in Washington (% of in-state providers)

Medicare quality performance, MIPS

Wilson Chan, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average

High performer (top quartile)
MIPS Final Score
90.8/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Medicine Physician) - 90.8/100 vs national avg 83.1

0%100%National avg83%90.8%
MIPS final score (Family Medicine Physician) - 90.8/100 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).

Wilson Chan, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 8299 161ST AVE NE, Redmond, WA, 98052, with a listed phone of (425) 881-8813. NPI 1538281530 was issued on 04/03/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Chan 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 4,864 prescription claims written by this provider, covering 488 Medicare beneficiaries and totaling roughly $273K in drug spend, split 7% brand-name and 92% generic by claim count, with an opioid prescribing rate of 6.0%. 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 90.8/100 for the 2023 performance year (Quality 95.7, Cost 73.7), compared with the national average of 83.1.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

8299 161ST AVE NE
Redmond, WA 98052

Provider Details

NPI 1538281530
Specialty Family Medicine Physician
Credentials MD
Gender Male
NPI Issued 04/03/2007

CMS Quality Score (MIPS)

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

90.8214
Final Score
Avg: 83.1
95.7077
Quality
73.697
Cost
100
Promoting Interoperability

Reporting: Individual

Hospital and facility affiliations

Facilities where Wilson Chan, 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.

King County Public Hospital District NO 2
Duvall, WA

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 Wilson Chan, MD. Source: openpaymentsdata.cms.gov.

Total received

$97

Largest payer

Dexcom, Inc.

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 Wilson Chan, MD. To verify Wilson Chan, 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 · Generic-heavy

Wilson Chan, MD - brand share 7.0%
Family Medicine Physician average

7% brand-name claims vs 92% generic, on 4,864 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.

4,864
Total Claims
$273K
Total Drug Cost
488
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,853
Total Day Supply
311,562
Brand vs Generic
7% brand / 92% generic
Brand Drug Cost
$166K
Generic Drug Cost
$104K
Opioid Claims
294 (6.0% rate)
Antibiotic Claims
103

Patient Demographics

Average Patient Age
74.5 years
Avg HCC Risk Score
0.90
Gender Split
47% female / 53% male
Age Distribution
<65: 27, 65-74: 209, 75-84: 204, 85+: 48

Top Prescribed Drugs (Medicare Part D)

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

What Wilson Chan, MD 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
Atorvastatin Calcium
258
Lisinopril
169
Levothyroxine Sodium
158
Metformin Hcl
157
Amlodipine Besylate
146
Losartan Potassium
146
Rosuvastatin Calcium
139
Simvastatin
137
Tamsulosin Hcl
112
Gabapentin
99

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

Family Medicine Physician Overview

How Wilson Chan, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

Wilson Chan, MD's 4,864 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in Washington

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

Compare Family Medicine Physician 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 Washington medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Family Medicine Physician 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 Wilson Chan, MD's specialty?
Wilson Chan, MD specializes in Family Medicine Physician and practices in Redmond, Washington. Credentials: MD.
How much does Wilson Chan, MD prescribe under Medicare Part D?
In 2023, Wilson Chan, MD wrote 4,864 Medicare Part D claims totaling $273K in drug costs for 488 beneficiaries.
What is Wilson Chan, MD's Medicare quality score?
Wilson Chan, MD has a CMS MIPS Final Score of 90.8/100 (Quality: 95.7, Cost: 73.7). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Wilson Chan, MD located?
Wilson Chan, MD is located at 8299 161ST AVE NE, Redmond, WA, 98052. Phone: (425) 881-8813.
What is Wilson Chan, MD's NPI number?
Wilson Chan, MD's National Provider Identifier (NPI) is 1538281530, issued on 04/03/2007.
Does Wilson Chan, MD prescribe more brand-name or generic drugs?
Wilson Chan, MD's prescribing is 7% brand-name and 92% generic drugs by claim count, with $166K in brand drug costs.
Does Wilson Chan, MD prescribe opioids?
Yes, Wilson Chan, MD had 294 opioid claims in 2023 with an opioid prescribing rate of 6.0%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Wilson Chan, MD prescribe most often?
Based on 2023 Medicare Part D data, Wilson Chan, MD's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Wilson Chan, MD accept Medicare?
Wilson Chan, MD appears in CMS Medicare data with 4,864 Part D claims and 488 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Wilson Chan, MD's credentials?
Wilson Chan, MD's NPI is 1538281530 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.
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

Compiled from official public sources by the PlainDoctor editorial team.