NPI registry status
Active
2026 NPPES data Specialist NPI 1184620759 M.D.
Verify on CMS → Ellen Ang, M.D.
Specialist in Kennewick, 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 69,658 in Specialist, 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
1K
Medicare Part D claims · 201 beneficiaries · Specialist avg: 1K
Generic prescribing
80%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Ellen Ang, M.D. filed 1,389 Medicare Part D claims in 2023 as a Specialist in Kennewick, Washington, prescribing 80% generic.
- 1K
- Part D claims, 2023
- 80%
- 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.
Ellen Ang, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,389 Top 21% higher than 79% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Ellen Ang, M.D.?
Quality data not reportedPrimary specialty
Specialist
Medicare Part D claims
1,389 6% vs specialty avg
Specialty distribution in Washington
How Specialist 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 Specialist. 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).
Ellen Ang, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 521 N YOUNG ST, Kennewick, WA, 99336, with a listed phone of (509) 585-5222. NPI 1184620759 was issued on 06/28/2005.
Medicare Part D records for calendar year 2023 show 1,389 prescription claims written by this provider, covering 201 Medicare beneficiaries and totaling roughly $306K in drug spend, split 19% brand-name and 80% generic by claim count, with an opioid prescribing rate of 5.7%.
Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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
Provider Details
| NPI | 1184620759 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 06/28/2005 |
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 Ellen Ang, M.D.. To verify Ellen Ang, M.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 · Typical
Ellen Ang, M.D. - brand share 19.0%
Specialist average
19% brand-name claims vs 80% generic, on 1,389 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.
1,389
Total Claims
$306K
Total Drug Cost
201
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,431
- Total Day Supply
- 35,323
- Brand vs Generic
- 19% brand / 80% generic
- Brand Drug Cost
- $268K
- Generic Drug Cost
- $37K
- Opioid Claims
- 79 (5.7% rate)
- Antibiotic Claims
- 34
Patient Demographics
- Average Patient Age
- 76.8 years
- Avg HCC Risk Score
- 3.79
- Gender Split
- 71% female / 29% male
- Age Distribution
- <65: 11, 65-74: 77, 75-84: 78, 85+: 35
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ellen Ang, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
75 claims
- Amlodipine Besylate
Amlodipine Besylate
71 claims
- Lisinopril
Lisinopril
45 claims
- Atorvastatin Calcium
Atorvastatin Calcium
44 claims
- Metformin Hcl Er
Metformin Hcl Er
40 claims
- Jardiance
Jardiance
39 claims
- Furosemide
Furosemide
38 claims
- Oxycodone Hcl
Oxycodone Hcl
36 claims
| Drug | Claims |
|---|---|
| Gabapentin | 75 |
| Amlodipine Besylate | 71 |
| Lisinopril | 45 |
| Atorvastatin Calcium | 44 |
| Metformin Hcl Er Metformin Hcl | 40 |
| Jardiance Empagliflozin | 39 |
| Furosemide | 38 |
| Oxycodone Hcl | 36 |
| Metoprolol Succinate | 35 |
| Losartan Potassium | 32 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Ellen Ang, M.D. fits within the Specialist landscape nationally.
69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider
Ellen Ang, M.D.'s 1,389 claims are below the specialty average of 1,474.
Nearby Specialist Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Ang.
Dr. Ruth Aaronson
MA
Seattle, WA
Dr. Patti Abbott
LMP
Seattle, WA
Dr. Khaled Abdel-Rahman
M.D.
Auburn, WA
Dr. Joni Abdo
LMP
Seattle, WA
Merry Abeel
Clyde Hill, WA
Compare Specialist 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 Specialist 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.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Washington
Frequently Asked Questions
What is Ellen Ang, M.D.'s specialty? ▼
Ellen Ang, M.D. specializes in Specialist and practices in Kennewick, Washington. Credentials: M.D..
How much does Ellen Ang, M.D. prescribe under Medicare Part D? ▼
In 2023, Ellen Ang, M.D. wrote 1,389 Medicare Part D claims totaling $306K in drug costs for 201 beneficiaries.
Where is Ellen Ang, M.D. located? ▼
Ellen Ang, M.D. is located at 521 N YOUNG ST, Kennewick, WA, 99336. Phone: (509) 585-5222.
What is Ellen Ang, M.D.'s NPI number? ▼
Ellen Ang, M.D.'s National Provider Identifier (NPI) is 1184620759, issued on 06/28/2005.
Does Ellen Ang, M.D. prescribe more brand-name or generic drugs? ▼
Ellen Ang, M.D.'s prescribing is 19% brand-name and 80% generic drugs by claim count, with $268K in brand drug costs.
Does Ellen Ang, M.D. prescribe opioids? ▼
Yes, Ellen Ang, M.D. had 79 opioid claims in 2023 with an opioid prescribing rate of 5.7%.
How many Specialist providers are there in the US? ▼
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
What drugs does Ellen Ang, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Ellen Ang, M.D.'s most frequently prescribed drugs include Gabapentin, Amlodipine Besylate, Lisinopril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Ellen Ang, M.D. accept Medicare? ▼
Ellen Ang, M.D. appears in CMS Medicare data with 1,389 Part D claims and 201 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Ellen Ang, M.D.'s credentials? ▼
Ellen Ang, M.D.'s NPI is 1184620759 with credentials M.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 (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
Compiled from official public sources by the PlainDoctor editorial team.