Stephen Teng-Yip Yau, M.D.
Pulmonary Disease Physician · Portland, OR
Stephen Teng-Yip Yau, M.D. is a pulmonary disease physician with a practice address in Portland, Oregon, and NPI 1154616035, issued on Jun 18, 2011. Check the license (Oregon MD182749, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Stephen Teng-Yip Yau
- Credential
- M.D.
- Primary taxonomy
- Pulmonary Disease Physician 207RP1001X
- License numbers
- MD182749 OR
125:060286 IL
MD61578579 WA
Self-reported in NPPES; status is on the state search - Practice location
- 9427 SW Barnes RD Ste 296, Portland, OR 97225
- Phone
- (503) 297-3778
- Enumerated
- Jun 18, 2011
- Record last updated
- Aug 20, 2024
- Fax
- (503) 297-7853
- Medicaid IDs
- 500729440 OR
2083737 WA - Medicare enrollment
- Enrolled (PECOS I20240904002069); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest pulmonary disease physician records → All 197 in Oregon → Look up another NPI →
Also registered at 9427 SW Barnes RD Ste 296
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Asha Chesnutt, MDPulmonary Disease Physician1124020987
- Janis Denning, PACPhysician Assistant1295929198
- Crystal Duran, MDPulmonary Disease Physician1376954156
- Gregory Flick, M.D.Pulmonary Disease Physician1417991969
- Robert Kim, M.D.Critical Care Medicine (Internal Medicine) Physician1780620096
- Candace Meinen, D.OSleep Medicine (Internal Medicine) Physician1104238468
Verify Stephen Teng-Yip Yau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD182749Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average pulmonary disease physician in 2024
579 Medicare Part D claims for 111 beneficiaries, against an average of 1,425 among the 11,596 providers of this specialty who prescribed in Part D. Brand-name drugs were 74% of claims.
Most prescribed
- Trelegy Ellipta111 claims
- Fluticasone-Salmeterol55 claims
- Montelukast Sodium51 claims
- Albuterol Sulfate Hfa48 claims
- Breo Ellipta39 claims
- Breztri Aerosphere29 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: $412,917.05
350 payments; by number, the most common kind was travel and lodging; the largest payer was Genzyme Corporation. The 8,806 providers of this specialty with any payment received $5,159.88 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 one group practice
- PeacehealthVancouver, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Teng-Yip Yau among 197 pulmonary disease physician records in Oregon
Stephen Teng-Yip Yau, M.D. is one of 197 pulmonary disease physician records with a practice address in Oregon. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 67% of them.
- NPI issued2011 · 67% of these records are older, 28% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2011 · median 2005 among the 144 with a school on file
- Record last updated2024 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RP1001X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pulmonary Disease Physician providers in Oregon
There are 197 pulmonary disease physician records in Oregon.
All 197 in Oregon → Every provider in Portland → Pulmonary Disease Physician nationwide →
The 8 pulmonary disease physician records with the nearest ZIP codes
- Asha Chesnutt, MDPortland, OR 972251124020987
- Crystal Duran, MDPortland, OR 972251376954156
- Gregory Flick, M.D.Portland, OR 972251417991969
- Howard Lazarus, M.D.Portland, OR 972251801822796
- William Nichols, MDPortland, OR 972251760471775
- Ralph Nottingham, MDPortland, OR 972251245347434
- Carl Riddick, M.D.Portland, OR 972251093751372
- Randy Sasich, M.DPortland, OR 972251245337260
Common questions
What is Stephen Teng-Yip Yau, M.D.'s NPI number?
Stephen Teng-Yip Yau, M.D.'s National Provider Identifier (NPI) is 1154616035, issued on Jun 18, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Teng-Yip Yau, M.D. located?
The NPPES record lists a practice address at 9427 SW Barnes RD Ste 296, Portland, OR, 97225. Phone: (503) 297-3778. Providers update this record themselves, so call before visiting.
How can I verify Stephen Teng-Yip Yau, M.D.'s license?
NPPES lists Oregon license number MD182749, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen Teng-Yip Yau, M.D. prescribe under Medicare Part D?
In 2024, Stephen Teng-Yip Yau, M.D. had 579 Medicare Part D claims for 111 beneficiaries; the average among pulmonary disease physician prescribers was 1,425. 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.