NPI registry status
Active
2026 NPPES data Endocrinology, Diabetes & Metabolism Physician NPI 1861551491 MD
Verify on CMS → Michael Decker, MD
Endocrinology, Diabetes & Metabolism Physician in Vancouver, 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 7,871 in Endocrinology, Diabetes & Metabolism 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
4K
Medicare Part D claims · 518 beneficiaries · Endocrinology, Diabetes & Metabolism Physician avg: 3K
Generic prescribing
43%
generic claims · 47% 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
Michael Decker, MD filed 4,020 Medicare Part D claims in 2023 as a Endocrinology, Diabetes & Metabolism Physician in Vancouver, Washington, prescribing 43% generic.
- 4K
- Part D claims, 2023
- 43%
- 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.
Michael Decker, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,020 Top 8% higher than 92% 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
✓
Board certification likely (heuristic, not verified)
Michael Decker, 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).
What does the federal data show about Michael Decker, MD?
Quality data not reportedPrimary specialty
Endocrinology, Diabetes & Metabolism Physician
Medicare Part D claims
4,020 52% vs specialty avg
Specialty distribution in Washington
How Endocrinology, Diabetes & Metabolism Physician 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 Endocrinology, Diabetes & Metabolism Physician. 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).
Michael Decker, MD appears in the CMS NPPES registry as an Endocrinology, Diabetes & Metabolism Physician provider holding MD credentials at 700 NE 87TH AVE, Vancouver, WA, 98664, with a listed phone of (360) 397-1500. NPI 1861551491 was issued on 12/08/2006.
Medicare Part D records for calendar year 2023 show 4,020 prescription claims written by this provider, covering 518 Medicare beneficiaries and totaling roughly $1.9 million in drug spend, split 47% brand-name and 43% generic by claim count.
Endocrinology, Diabetes & Metabolism Physician is a mid-sized specialty nationwide, with 7,871 enrolled providers across 54 states and an average of 2,639 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 | 1861551491 |
|---|---|
| Specialty | Endocrinology, Diabetes & Metabolism Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 12/08/2006 |
Hospital and facility affiliations
Facilities where Michael Decker, 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.
The Vancouver Clinic Inc PS
Vancouver, 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).
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 Michael Decker, MD. To verify Michael Decker, 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
Michael Decker, MD - brand share 47.0%
Endocrinology, Diabetes & Metabolism Physician average
47% brand-name claims vs 43% generic, on 4,020 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.
4,020
Total Claims
$1.9M
Total Drug Cost
518
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 9,359
- Total Day Supply
- 277,818
- Brand vs Generic
- 47% brand / 43% generic
- Brand Drug Cost
- $1.8M
- Generic Drug Cost
- $46K
Patient Demographics
- Average Patient Age
- 71.8 years
- Avg HCC Risk Score
- 1.58
- Gender Split
- 61% female / 39% male
- Age Distribution
- <65: 63, 65-74: 268, 75-84: 154, 85+: 33
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Michael Decker, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Levothyroxine Sodium
Levothyroxine Sodium
577 claims
- Metformin Hcl Er 210
Metformin Hcl Er
210 claims
- Metformin Hcl 199
Metformin Hcl
199 claims
- Jardiance 195
Jardiance
195 claims
- Trulicity 150
Trulicity
150 claims
- Testosterone Cypio… 133
Testosterone Cypionate
133 claims
- Alendronate Sodium 122
Alendronate Sodium
122 claims
- Atorvastatin Calcium 88
Atorvastatin Calcium
88 claims
| Drug | Claims |
|---|---|
| Levothyroxine Sodium | 577 |
| Metformin Hcl Er Metformin Hcl | 210 |
| Metformin Hcl | 199 |
| Jardiance Empagliflozin | 195 |
| Trulicity Dulaglutide | 150 |
| Testosterone Cypionate | 133 |
| Alendronate Sodium | 122 |
| Atorvastatin Calcium | 88 |
| Methimazole | 82 |
| Synthroid Levothyroxine Sodium | 77 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Endocrinology, Diabetes & Metabolism Physician in WA →
All providers in Washington →
Compare specialties →
Endocrinology, Diabetes & Metabolism Physician Overview
How Michael Decker, MD fits within the Endocrinology, Diabetes & Metabolism Physician landscape nationally.
7,871
Endocrinology, Diabetes & Metabolism Physician Providers in US
54
States with Endocrinology, Diabetes & Metabolism Physician
2,639
Avg Claims per Provider
Michael Decker, MD's 4,020 claims are above the specialty average of 2,639.
Nearby Endocrinology, Diabetes & Metabolism Physician Providers in Washington
Other clinicians with the same primary specialty enrolled in Washington, drawn from the same CMS NPPES roster as Decker.
Dr. Rtika Abraham
MD
Issaquah, WA
Sonia Afshariyamchlou
Richland, WA
Dr. Iram Ahmad
M.D.
Seattle, WA
Dr. Mandana Ahmadian
MD
Bellevue, WA
Dr. Anam Akmal
M.D
Lacey, WA
Compare Endocrinology, Diabetes & Metabolism 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 Endocrinology, Diabetes & Metabolism 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.
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Frequently Asked Questions
What is Michael Decker, MD's specialty? ▼
Michael Decker, MD specializes in Endocrinology, Diabetes & Metabolism Physician and practices in Vancouver, Washington. Credentials: MD.
How much does Michael Decker, MD prescribe under Medicare Part D? ▼
In 2023, Michael Decker, MD wrote 4,020 Medicare Part D claims totaling $1.9M in drug costs for 518 beneficiaries.
Where is Michael Decker, MD located? ▼
Michael Decker, MD is located at 700 NE 87TH AVE, Vancouver, WA, 98664. Phone: (360) 397-1500.
What is Michael Decker, MD's NPI number? ▼
Michael Decker, MD's National Provider Identifier (NPI) is 1861551491, issued on 12/08/2006.
Does Michael Decker, MD prescribe more brand-name or generic drugs? ▼
Michael Decker, MD's prescribing is 47% brand-name and 43% generic drugs by claim count, with $1.8M in brand drug costs.
How many Endocrinology, Diabetes & Metabolism Physician providers are there in the US? ▼
There are 7,871 Endocrinology, Diabetes & Metabolism Physician providers across 54 states in the US. The average Endocrinology, Diabetes & Metabolism Physician provider writes 2,639 Medicare Part D claims per year.
What drugs does Michael Decker, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Michael Decker, MD's most frequently prescribed drugs include Levothyroxine Sodium, Metformin Hcl Er, Metformin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Michael Decker, MD accept Medicare? ▼
Michael Decker, MD appears in CMS Medicare data with 4,020 Part D claims and 518 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Michael Decker, MD's credentials? ▼
Michael Decker, MD's NPI is 1861551491 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
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.
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 May 2026.