Michael A. Portman
- Publications
- 102
- Clinical trials
- 2
- Hospital affiliations
- 1
- Industry payments
- $56,130
- Medical groups
- 2
- 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 Michael Portman's professional email, personal email and mobile number
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Michael A. Portman is a pediatric cardiology physician in Seattle, Washington
Michael Portman practices at Seattle Children's Hospital in Seattle, Washington, part of Seattle Children's Hospital, Research Institute and Foundation.
Michael Portman's NPI, 1669558342, was assigned on October 27, 2006. Michael Portman graduated from University of Cincinnati College of Medicine in 1980. Michael Portman holds Washington license MD00029884.
- NPI
- 1669558342NPI Registry (opens in a new tab)
- NPI enumeration date
- October 27, 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
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Michael A. Portman practices at Seattle Children's Hospital in Seattle, Washington
Michael Portman'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
Michael A. Portman is affiliated with 1 site of care and 2 medical groups
Michael Portman'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). Dmand AI also links Michael Portman to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Michael A. Portman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Portman 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 |
| +1 medical group | 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.
Michael A. Portman is one of 78 pediatric cardiology physicians in Washington
Pediatric cardiology is Michael Portman's primary specialty in the NPI Registry, under taxonomy code 2080P0202X. Michael Portman is licensed in Washington.
Specialties and state licenses
- Pediatric cardiology, WashingtonPrimary
Pediatric cardiology physicians near Michael Portman
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
Michael A. Portman's patients have a median age of 8
Across all payers, Dmand AI patient panel data puts Michael Portman's median patient age at 8, with 33% women.
Michael Portman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 8
Patient panel by sex, all payers
- Women33%
- Men66%
Source: Dmand AI Patient Panel Data
Michael A. Portman has 102 publications on record
Dmand AI links 102 papers to Michael Portman, published from 2005 to 2025. 2021 was the busiest year, with 11. The most frequent topics are Mucocutaneous Lymph Node Syndrome, COVID-19 and Myocardium. Michael Portman has published most often in Am J Physiol Heart Circ Physiol. Michael Portman's most frequent co-authors are Aaron K. Olson, MD, Ashraf Saud Harahsheh, MD and Jane W. Newburger, MD.
Michael Portman's papers by year, 2016 to 2025
Topics Michael Portman writes about most
- Mucocutaneous Lymph Node Syndrome
- COVID-19
- Myocardium
- Swine
- Triiodothyronine
- Cardiopulmonary Bypass
- Energy Metabolism
- SARS-CoV-2
Michael Portman's most frequent co-authors
- Aaron K. Olson, MD23 shared papers
- Ashraf Saud Harahsheh, MD13 shared papers
- Jane W. Newburger, MD11 shared papers
Recent publications by Michael Portman
J Am Heart Assoc
See who Michael Portman researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Michael Portman works with, so you can find a warm path to the right pediatric cardiology physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Michael A. Portman has worked on 2 clinical trials
Dmand AI links Michael Portman to 2 clinical trials. 1 is still active or recruiting. Conditions studied include Heart Defects, Congenital, Pericarditis and Cardiovascular Abnormalities.
Conditions in Michael Portman's trials
- Heart Defects, Congenital
- Pericarditis
- Cardiovascular Abnormalities
- Heart Diseases
Investigators on the most trials with Michael Portman
- Sarosh P. Batlivala, MD1 shared trial
- Michael Seth Garshick, MD1 shared trial
- Suneet Nitin Purohit, MD1 shared trial
Recent clinical trials with Michael Portman
Registry of the Natural History of Recurrent Pericarditis in Pediatric and Adult Patients (opens in a new tab)
Phase 3 Triiodothyronine Supplementation for Infants After Cardiopulmonary Bypass (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Michael A. Portman received $56,130 in industry payments from 2018 to 2024
CMS Open Payments shows 33 general payments to Michael Portman from 3 drug and device companies from 2018 to 2024. Consulting fees make up the largest share, 82% of the total. Daiichi Sankyo Inc. paid the most, $36,974. It also lists 8 research payments totaling $1,060 from 2016 to 2017.
General payments to Michael Portman by program year, 2018 to 2024
General payments to Michael Portman by kind, 2018 to 2024
- Consulting fees$45,98582%
- Travel and lodging$7,82914%
- Honoraria$2,0104%
- Food and beverage$3061%
Companies that paid Michael Portman the most, 2018 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Michael A. Portman graduated from University of Cincinnati College of Medicine
Michael Portman graduated from University of Cincinnati College of Medicine in 1980.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Michael A. Portman'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 |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| 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 Michael A. Portman
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael A. Portman's NPI number?
Michael A. Portman's NPI number is 1669558342. It was assigned on October 27, 2006, and it is active in the NPI Registry.
What does Michael A. Portman specialize in?
Michael A. Portman is a pediatric cardiology physician in Seattle, Washington. The primary specialty in the NPI Registry is Pediatric Cardiology Physician (taxonomy code 2080P0202X).
Where does Michael A. Portman practice?
Michael Portman practices at 4800 Sand Point Way NE, PO Box C-5371, Seattle, WA 98105. Michael Portman's primary practice is Seattle Children's Hospital in Seattle, Washington, part of Seattle Children's Hospital, Research Institute and Foundation. Dmand AI also links Michael Portman to 1 medical group.
What is Michael A. Portman's office phone number?
The practice phone on file for Michael Portman is (206) 987-2000.
What is Michael A. Portman's medical license number?
Michael Portman holds Washington license MD00029884.
Which hospitals is Michael A. Portman affiliated with?
Michael Portman practices at Seattle Children's Hospital in Seattle, Washington.
What medical group is Michael A. Portman part of?
Michael Portman is linked to Children's University Medical Group (CUMG). Dmand AI links Michael Portman to 1 more medical group.
Where did Michael A. Portman go to medical school?
Michael Portman graduated from University of Cincinnati College of Medicine in 1980.
Has Michael A. Portman received payments from drug or device companies?
CMS Open Payments shows $56,130 in general payments to Michael Portman from 3 companies from 2018 to 2024. The largest total came from Daiichi Sankyo Inc.
How long has Michael A. Portman been practicing?
Michael Portman graduated from medical school in 1980, 46 years ago.
Does Michael A. Portman do research?
Dmand AI links 102 publications to Michael Portman, published from 2005 to 2025. Michael Portman has worked on 2 clinical trials.
Who does Michael A. Portman publish with?
Michael Portman's most frequent co-authors are Aaron K. Olson, MD (23 shared papers), Ashraf Saud Harahsheh, MD (13 shared papers) and Jane W. Newburger, MD (11 shared papers).
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