Troy Alan Johnston
- Hospital affiliations
- 1
- Industry payments
- $170
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 4800 Sand Point Way NE, PO Box C-5371, Seattle, WA 98105
- Practice phone
- Call (206) 987-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Troy Johnston's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Troy Alan Johnston is a pediatric cardiology physician in Seattle, Washington
Troy Johnston practices at Seattle Children's Hospital in Seattle, Washington, part of Seattle Children's Hospital, Research Institute and Foundation.
Troy Johnston's NPI, 1134219025, was assigned on October 13, 2006. Troy Johnston graduated from University of Virginia School of Medicine in 1991. Troy Johnston holds Washington license MD00037640.
- NPI
- 1134219025NPI Registry (opens in a new tab)
- NPI enumeration date
- October 13, 2006
- NPI status
- Active
- Practice phone
- (206) 987-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Troy Alan Johnston practices at Seattle Children's Hospital in Seattle, Washington
Troy Johnston's primary practice is Seattle Children's Hospital, at 4800 Sand Point Way NE, PO Box C-5371, Seattle, WA 98105 in King County. The practice phone is (206) 987-2000.
- Seattle Children's Hospital4800 Sand Point Way NE, PO Box C-5371, Seattle, WA 98105 · King CountyPhone(206) 987-2000
Source: Dmand AI Affiliation Data
Troy Alan Johnston is affiliated with 1 site of care and 1 medical group
Troy Johnston's primary practice is Seattle Children's Hospital in Seattle, Washington, part of Seattle Children's Hospital, Research Institute and Foundation. The medical group on file is Children's University Medical Group (CUMG).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Troy Alan Johnston's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Troy Johnston practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Seattle Children's Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Seattle Children's Hospital, Research Institute and Foundation and 6.2K+ hospitals, with verified contacts in the same login.
Troy Alan Johnston is one of 78 pediatric cardiology physicians in Washington
Pediatric cardiology is Troy Johnston's primary specialty in the NPI Registry, under taxonomy code 2080P0202X. Troy Johnston is licensed in Washington.
Specialties and state licenses
- Pediatric cardiology, WashingtonPrimary
Pediatric cardiology physicians near Troy Johnston
Counts of pediatric cardiology physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Troy Alan Johnston's patients have a median age of 11
Across all payers, Dmand AI patient panel data puts Troy Johnston's median patient age at 11, with 50% women.
Troy Johnston's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 11
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Troy Alan Johnston received $170 in industry payments from 2019 to 2025
CMS Open Payments shows 5 general payments to Troy Johnston from 3 drug and device companies from 2019 to 2025. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $106.
General payments to Troy Johnston by program year, 2019 to 2025
Companies that paid Troy Johnston the most, 2019 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Troy Alan Johnston graduated from University of Virginia School of Medicine
Troy Johnston graduated from University of Virginia School of Medicine in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Troy Alan Johnston's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Troy Alan Johnston
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Troy Alan Johnston's NPI number?
Troy Alan Johnston's NPI number is 1134219025. It was assigned on October 13, 2006, and it is active in the NPI Registry.
What does Troy Alan Johnston specialize in?
Troy Alan Johnston is a pediatric cardiology physician in Seattle, Washington. The primary specialty in the NPI Registry is Pediatric Cardiology Physician (taxonomy code 2080P0202X).
Where does Troy Alan Johnston practice?
Troy Johnston practices at 4800 Sand Point Way NE, PO Box C-5371, Seattle, WA 98105. Troy Johnston's primary practice is Seattle Children's Hospital in Seattle, Washington, part of Seattle Children's Hospital, Research Institute and Foundation.
What is Troy Alan Johnston's office phone number?
The practice phone on file for Troy Johnston is (206) 987-2000.
What is Troy Alan Johnston's medical license number?
Troy Johnston holds Washington license MD00037640.
Which hospitals is Troy Alan Johnston affiliated with?
Troy Johnston practices at Seattle Children's Hospital in Seattle, Washington.
What medical group is Troy Alan Johnston part of?
Troy Johnston is linked to Children's University Medical Group (CUMG).
Where did Troy Alan Johnston go to medical school?
Troy Johnston graduated from University of Virginia School of Medicine in 1991.
Has Troy Alan Johnston received payments from drug or device companies?
CMS Open Payments shows $170 in general payments to Troy Johnston from 3 companies from 2019 to 2025. The largest total came from Abbott Laboratories.
How long has Troy Alan Johnston been practicing?
Troy Johnston graduated from medical school in 1991, 35 years ago.
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