Marianne Stewart Johnston, PA-C
Physician Assistant · Renton, WA
Marianne Stewart Johnston, PA-C is a physician assistant with a practice address in Renton, Washington, and NPI 1871724658, issued on Jul 28, 2009. Check the license (Washington PA 60105502, as entered in NPPES) with the Washington board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marianne Stewart Johnston
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA 60105502 WA
Self-reported in NPPES; status is on the state search - Practice location
- 17900 Talbot RD S, Renton, WA 98055
- Phone
- (425) 235-9614
- Enumerated
- Jul 28, 2009
- Record last updated
- Nov 30, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20091109000398); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 17900 Talbot RD S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Graves, MDLegal Medicine1255365839
- Stacey Hiles, M.D.Family Medicine Physician1922266162
- Gary Kato, MDFamily Medicine Physician1801903323
- Leigh Kenner, DDSGeneral Practice Dentistry1558506097
- Craig McGoran, MDFamily Medicine Physician1295744209
- Luke St. MarieDentist1518340686
Verify Marianne Stewart Johnston in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Washington board licenses this profession
Search for license PA 60105502Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.4 times the Medicare Part D claims of the average physician assistant in 2024
2,839 Medicare Part D claims for 106 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 449 claims were for opioids.
Most prescribed
- Oxycodone Hcl212 claims
- Gabapentin119 claims
- Hydrocodone-Acetaminophen86 claims
- Amlodipine Besylate85 claims
- Levothyroxine Sodium78 claims
- Lisinopril75 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $617.18
28 payments; by number, the most common kind was food and beverage; the largest payer was Iti, Inc. (d/b/a Intra-Cellular Therapies, Inc.). The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Select Outpatient Services IncGlenview, IL
- Select Rehabilitation, LLCGlenview, IL
- Stacey L Hiles MD PLLCRenton, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
57 physician assistant records list a practice address in Renton
They are 57 of the 3,147 NPPES records with a practice address in Renton, and 3,718 physician assistant records in Washington.
All 57 in Renton → All 3,718 in Washington → Every provider in Renton →
Other physician assistant records in Washington
- Eric Abarr, PA-CMarysville, WA1598655292
- Ahmed Abdelshafy, PA-CCheney, WA1457029795
- Sihaam AbdiShoreline, WA1801758289
- Nicole Abdullah, PAWenatchee, WA1285032268
- Kimberly Abella-Cree, PA-CYakima, WA1548514292
- Buddhika AbeyratneOak Harbor, WA1104369560
- Danielle Abrass, PA-CSeattle, WA1184140717
- Abraham Abu, PA-CSeattle, WA1710036587
- Alvin AbuegEverett, WA1396132015
- Aaron Adam, PA-CVancouver, WA1447543459
Common questions
What is Marianne Stewart Johnston, PA-C's NPI number?
Marianne Stewart Johnston, PA-C's National Provider Identifier (NPI) is 1871724658, issued on Jul 28, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Marianne Stewart Johnston, PA-C located?
The NPPES record lists a practice address at 17900 Talbot RD S, Renton, WA, 98055. Phone: (425) 235-9614. Providers update this record themselves, so call before visiting.
How can I verify Marianne Stewart Johnston, PA-C's license?
NPPES lists Washington license number PA 60105502, as entered by the provider. Search the Washington board that licenses this profession; the NPPES record confirms identity only.
How much does Marianne Stewart Johnston, PA-C prescribe under Medicare Part D?
In 2024, Marianne Stewart Johnston, PA-C had 2,839 Medicare Part D claims for 106 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.