2026 NPPES data Medical Oncology Physician NPI 1386637288 MD
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STEPHEN LEMON, MD

Medical Oncology Physician in SILVERDALE, 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
884
Medicare Part D claims · 171 beneficiaries · Medical Oncology Physician avg: 689
Generic prescribing
81%
generic claims · 19% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
93.0932/100
▲ 10 pts above national avg 83.1 · [object Object]
Industry payments
$283.95
7 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: STEPHEN LEMON, MD is a Medical Oncology Physician ([object Object]) practicing in SILVERDALE, Washington with a Medicare Part D prescribing footprint of 884 claims across 171 beneficiaries — 19% brand-name prescribing . Their CMS MIPS Final Score of 93.0932/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $283.95 across 7 transactions are disclosed under CMS Open Payments (Sunshine Act).

What the federal data shows

STEPHEN LEMON, MD reported a CMS MIPS final score of 93.0932/100 — above the 83.1 national average — and filed 884 Medicare Part D claims in 2023.

93.0932/100
MIPS score · +10 vs avg
884
Part D claims, 2023
81%
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.

STEPHEN LEMON, MD's MIPS score vs every scored U.S. clinician

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

93 Top 29% higher than 71% 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. 90–100: 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

Board certification likely (heuristic — not verified)

STEPHEN LEMON, 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).

STEPHEN LEMON, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 08/25/2005

NPI 1386637288

Primary specialty

Medical Oncology Physician

Niche

3,792 US NPIs in this specialty

Medicare Part D claims

884 28% vs specialty avg

2023 prescription claims

Specialty avg: 689

MIPS final score

93.0932/100 9.993200000000002% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Washington

How Medical Oncology Physician compares to other specialties among Washington providers

Washington providers

Medical Oncology Physician share within Washington

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

Medicare quality performance — MIPS

STEPHEN LEMON, MD's 2023 MIPS final score plotted against the Medical Oncology Physician national average

High performer (top quartile)
MIPS Final Score
93.0932/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Oncology Physician) — 93.0932/100 vs national avg 83.1

0%100%National avg83%93.1%
MIPS final score (Medical Oncology Physician) — 93.0932/100 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).

STEPHEN LEMON, MD is a Medical Oncology Physician provider practicing in SILVERDALE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1386637288. 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.

STEPHEN LEMON, MD appears in the CMS NPPES registry as a Medical Oncology Physician provider holding MD credentials at 10452 SILVERDALE WAY NW, SILVERDALE, WA, 98383, with a listed phone of (360) 307-7300. NPI 1386637288 was issued on 08/25/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what LEMON 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 884 prescription claims written by this provider, covering 171 Medicare beneficiaries and totaling roughly $2.0 million in drug spend, split 19% brand-name and 81% generic by claim count, with an opioid prescribing rate of 7.1%. 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 93.0932/100 for the 2023 performance year (Quality 73.9573), compared with the national average of 83.1.

Medical Oncology Physician is a narrow specialty nationwide, with 3,792 enrolled providers across 53 states and an average of 689 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

10452 SILVERDALE WAY NW
SILVERDALE, WA 98383

Provider Details

NPI 1386637288
Specialty Medical Oncology Physician
Credentials MD
Gender Male
NPI Issued 08/25/2005

CMS Quality Score (MIPS)

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

93.0932
Final Score
Avg: 83.1
73.9573
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where STEPHEN LEMON, 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.

KAISER FOUNDATION HEALTH PLAN OF WASHINGTON
SILVERDALE, 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 STEPHEN LEMON, MD. Source: openpaymentsdata.cms.gov.

Total received

$284

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 STEPHEN LEMON, MD. To verify STEPHEN LEMON, 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 · Typical

STEPHEN LEMON, MD — brand share 19.0%
Specialty average (est.)

19% brand-name claims vs 81% generic, on 884 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.

884
Total Claims
$2.0M
Total Drug Cost
171
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,428
Total Day Supply
39,944
Brand vs Generic
19% brand / 81% generic
Brand Drug Cost
$1.8M
Generic Drug Cost
$173K
Opioid Claims
63 (7.1% rate)
Antibiotic Claims
20

Patient Demographics

Average Patient Age
76.8 years
Avg HCC Risk Score
1.58
Gender Split
74% female / 26% 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
Anastrozole
252
Tamoxifen Citrate
75
Prednisone
48
Abiraterone Acetate
29
Oxycodone Hcl
27
Ondansetron Hcl
24
Eliquis
Apixaban
23
Imatinib Mesylate
21
Valacyclovir
Valacyclovir Hcl
18
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
17

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

Medical Oncology Physician Overview

How STEPHEN LEMON, MD fits within the Medical Oncology Physician landscape nationally.

3,792
Medical Oncology Physician Providers in US
53
States with Medical Oncology Physician
689
Avg Claims per Provider

STEPHEN LEMON, MD's 884 claims are above the specialty average of 689.

Nearby Medical Oncology Physician Providers in Washington

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

Compare Medical Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is STEPHEN LEMON, MD's specialty?
STEPHEN LEMON, MD specializes in Medical Oncology Physician and practices in SILVERDALE, Washington. Credentials: MD.
How much does STEPHEN LEMON, MD prescribe under Medicare Part D?
In 2023, STEPHEN LEMON, MD wrote 884 Medicare Part D claims totaling $2.0M in drug costs for 171 beneficiaries.
What is STEPHEN LEMON, MD's Medicare quality score?
STEPHEN LEMON, MD has a CMS MIPS Final Score of 93.0932/100 (Quality: 73.9573). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is STEPHEN LEMON, MD located?
STEPHEN LEMON, MD is located at 10452 SILVERDALE WAY NW, SILVERDALE, WA, 98383. Phone: (360) 307-7300.
What is STEPHEN LEMON, MD's NPI number?
STEPHEN LEMON, MD's National Provider Identifier (NPI) is 1386637288, issued on 08/25/2005.
Does STEPHEN LEMON, MD prescribe more brand-name or generic drugs?
STEPHEN LEMON, MD's prescribing is 19% brand-name and 81% generic drugs by claim count, with $1.8M in brand drug costs.
Does STEPHEN LEMON, MD prescribe opioids?
Yes, STEPHEN LEMON, MD had 63 opioid claims in 2023 with an opioid prescribing rate of 7.1%.
How many Medical Oncology Physician providers are there in the US?
There are 3,792 Medical Oncology Physician providers across 53 states in the US. The average Medical Oncology Physician provider writes 689 Medicare Part D claims per year.
What drugs does STEPHEN LEMON, MD prescribe most often?
Based on 2023 Medicare Part D data, STEPHEN LEMON, MD's most frequently prescribed drugs include Anastrozole, Tamoxifen Citrate, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does STEPHEN LEMON, MD accept Medicare?
STEPHEN LEMON, MD appears in CMS Medicare data with 884 Part D claims and 171 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify STEPHEN LEMON, MD's credentials?
STEPHEN LEMON, MD's NPI is 1386637288 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