Dr. William Matthew Klein, MD
- Hospital affiliations
- 1
- Industry payments
- $78
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 3101 SW Sam Jackson Park Road, Portland, OR 97239
- Practice phone
- Call (541) 241-5090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Klein'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.
Dr. William Matthew Klein is a pediatric anesthesiology physician in Portland, Oregon
Dr. Klein practices at Shriners Children's Portland in Portland, Oregon, part of Shriners Hospitals for Children.
Dr. Klein's NPI, 1033290838, was assigned on October 18, 2006. Dr. Klein holds Oregon license MD20380.
- NPI
- 1033290838NPI Registry (opens in a new tab)
- NPI enumeration date
- October 18, 2006
- NPI status
- Active
- Practice phone
- (541) 241-5090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. William Matthew Klein practices at Shriners Children's Portland in Portland, Oregon
Dr. Klein's primary practice is Shriners Children's Portland, at 3101 SW Sam Jackson Park Road, Portland, OR 97239 in Multnomah County. The practice phone is (541) 241-5090.
- Shriners Children's Portland3101 SW Sam Jackson Park Road, Portland, OR 97239 · Multnomah CountyPhone(541) 241-5090
Source: Dmand AI Affiliation Data
Dr. William Matthew Klein is affiliated with 1 site of care and 1 medical group
Dr. Klein's primary practice is Shriners Children's Portland in Portland, Oregon, part of Shriners Hospitals for Children. The medical group on file is Shriners Hospitals For Children.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Matthew Klein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Shriners Children's Portland | 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 Shriners Hospitals for Children and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William Matthew Klein is one of 23 pediatric anesthesiology physicians in Oregon
Pediatric anesthesiology is Dr. Klein's primary specialty in the NPI Registry, under taxonomy code 207LP3000X. Dr. Klein is licensed in Oregon.
Specialties and state licenses
- Pediatric anesthesiology, OregonPrimary
Pediatric anesthesiology physicians near Dr. Klein
Counts of pediatric anesthesiology 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
Dr. William Matthew Klein's patients have a median age of 14
Across all payers, Dmand AI patient panel data puts Dr. Klein's median patient age at 14, with 54% women.
Dr. Klein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 14
Patient panel by sex, all payers
- Women54%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. William Matthew Klein received $78 in industry payments in 2020
CMS Open Payments shows 4 general payments to Dr. Klein from 1 drug or device company in 2020. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $78.
Companies that paid Dr. Klein the most, 2020 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. William Matthew Klein'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) |
| 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 Dr. William Matthew Klein
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William Matthew Klein's NPI number?
Dr. William Matthew Klein's NPI number is 1033290838. It was assigned on October 18, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Matthew Klein?
Dr. William Matthew Klein is a pediatric anesthesiology physician in Portland, Oregon. The primary specialty in the NPI Registry is Pediatric Anesthesiology Physician (taxonomy code 207LP3000X).
Where does Dr. William Matthew Klein practice?
Dr. Klein practices at 3101 SW Sam Jackson Park Road, Portland, OR 97239. Dr. Klein's primary practice is Shriners Children's Portland in Portland, Oregon, part of Shriners Hospitals for Children.
What is Dr. William Matthew Klein's office phone number?
The practice phone on file for Dr. Klein is (541) 241-5090.
What is Dr. William Matthew Klein's medical license number?
Dr. Klein holds Oregon license MD20380.
Which hospitals is Dr. William Matthew Klein affiliated with?
Dr. Klein practices at Shriners Children's Portland in Portland, Oregon.
What medical group is Dr. William Matthew Klein part of?
Dr. Klein is linked to Shriners Hospitals For Children.
Has Dr. William Matthew Klein received payments from drug or device companies?
CMS Open Payments shows $78 in general payments to Dr. Klein from 1 company from 2020 to 2020. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. William Matthew Klein been practicing?
Dr. Klein's NPI was assigned in 2006.
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