Stephen Louis Walston, MD
Stephen Louis Walston is an Internal Medicine specialist based in Mercer Island, WA with over 16 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Stephen Louis Walston, MD practices as part of a group internist practice in Mercer Island, WA. A University of Texas Medical School at Houston graduate since 2010, he brings 16+ years of experience. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and arthritis.
At a glance
- Prescribes opioids less than 58% of reporting doctors in Washington
- Uses generic medications more than 30% of reporting doctors in Washington
- Virtual visits available — no app or travel required
Older · 1654dNPPES updated 2021-11-11 · verify NPI on CMS · Verify license at Washington Medical Commission
Contact & Location
Practice Location
3236 78th Ave Se Ste 200, Mercer Island, WA 98040-3500
How Does This Doctor Compare?
Based on Medicare data, this doctor prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.
Opioid Rx
↓ Lower = better0.71%
Washington avg: 5.7 · US avg: 5.1
✓ Higher than most doctors nationally(-4.4 pts)
Typical range among reporting doctors in Washington0.71% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.
Generic Rx
↑ Higher = better85.8%
Washington avg: 85.1 · US avg: 82.8
✓ Higher than most doctors nationally(+3 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
195
Unique beneficiaries
Standard volumePrescription Recipients
238
Patients prescribed
Prescriptions Written
2,106
Total claims
Total Medicare drug cost: $260k
Percentile rankings compared against 1,521 reporting peers in Washington.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-16%) — less common here
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-18%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-8%) — less common here
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-8%) — less common here
Diseases involving abnormal cell growth with potential to spread to other body parts
US avg: 20.8%↓ Fewer patients than average (-1%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 2010
Mcgovern Medical School at Uthealth Houston
Board certified · Nov 10, 2021
Self-reported via NPPES
16 years in practice
Experienced
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Taxonomy: 207R00000X
Education & Training
University of Texas Medical School at Houston (Class of 2010)
Mailing address
Po Box 25608, Salt Lake City, UT 84125-0608
Differs from practice location
Virtual Internal Medicine Care With Stephen Louis Walston
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Stephen Louis Walston for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Mercer Island required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Stephen Louis Walston
Dr. Walston is listed as active in the NPI registry with telehealth listed in Mercer Island, WA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (206) 386-9500.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Stephen Louis Walston
Practice Location
3236 78th Ave Se Ste 200, Mercer Island, WA 98040-3500
Mailing Address
Po Box 25608, Salt Lake City, UT 84125-0608
This is a provider directory. Contact the office directly to schedule appointments.
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