Marianne Stewart Johnston, PA-C
Marianne Stewart Johnston is a Physician Assistant based in Renton, WA with over 21 years of clinical experience. Offers virtual telehealth visits.
With over 21 years in medical, Marianne Stewart Johnston, PA-C is a long-established physician assistant in Renton. She has been practicing since 2009 — over 21 years. CMS Medicare data shows her patients commonly have hypertension, high cholesterol, and arthritis.
At a glance
- Uses generic medications more than 68% of reporting doctors in Washington
- Virtual visits available — no app or travel required
Older · 3096dNPPES updated 2017-11-30 · verify NPI on CMS · Verify license at Washington Medical Commission
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%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-5%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-12%) — less common here
A condition where the body cannot properly regulate blood sugar levels
US avg: 34.5%↓ Fewer patients than average (-2%) — less common here
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↑ More patients than average (+5%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-5%) — less common here
The heart cannot pump blood efficiently enough to meet the body's needs
US avg: 22.5%↑ More patients than average (+2%) — a focus area for this doctor
A mood disorder causing persistent sadness and loss of interest in activities
US avg: 31.8%↓ Fewer patients than average (-8%) — less common here
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.
21 years in practice
Experienced
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Taxonomy: 363A00000X
Mailing address
Po Box 826, Black Diamond, WA 98010-0826
Differs from practice location
Virtual Medical Care With Marianne Stewart Johnston
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Marianne Stewart Johnston for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Renton required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Marianne Stewart Johnston
NPI records show Dr. Johnston as active with telehealth listed in Renton, WA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (425) 235-9614.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Contact Marianne Stewart Johnston
Practice Location
17900 Talbot Rd S Suite 101, Renton, WA 98055-8212
Mailing Address
Po Box 826, Black Diamond, WA 98010-0826
This is a provider directory. Contact the office directly to schedule appointments.
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