Heather Christine Lowell Diaz, PA-C
Physician Assistant · Portland, OR
Heather Christine Lowell Diaz, PA-C is a physician assistant with a practice address in Portland, Oregon, and NPI 1467120543, issued on Sep 2, 2021. Check the license (Oregon PA206659, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Heather Christine Lowell Diaz
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA206659 OR
Self-reported in NPPES; status is on the state search - Practice location
- 9155 SW Barnes RD Ste 532, Portland, OR 97225
- Phone
- (503) 488-2344
- Enumerated
- Sep 2, 2021
- Record last updated
- Feb 26, 2026
- Fax
- (503) 488-2360
- Medicare enrollment
- Enrolled (PECOS I20211012000773); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 9155 SW Barnes RD Ste 532
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Heather Christine Lowell Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license PA206659Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
71% more Medicare Part D claims than the average physician assistant in 2024
1,422 Medicare Part D claims for 444 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 64 claims were for opioids.
Most prescribed
- Atorvastatin Calcium79 claims
- Amlodipine Besylate61 claims
- Lisinopril53 claims
- Omeprazole40 claims
- Levothyroxine Sodium38 claims
- Losartan Potassium36 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.
Physician Assistant providers in Oregon
There are 2,094 physician assistant records in Oregon.
Other physician assistant records in Oregon
- Taylor Abdala, PAStayton, OR1528694221
- Sanyi Yoseph AbdissaHermiston, OR1083356018
- Emad Aboujaoude, PAPortland, OR1982619490
- Aaron AbrahamHappy Valley, OR1063186823
- Erika Acuna, PA-CPortland, OR1881072775
- Heather Adair, PA-CTigard, OR1568749539
- John Adair, PA-CIrrigon, OR1578873477
- Kylee AdamekBend, OR1326720186
- Julie Adams, PA-CHillsboro, OR1710078779
- Danielle Addleman, PAPendleton, OR1669745469
Common questions
What is Heather Christine Lowell Diaz, PA-C's NPI number?
Heather Christine Lowell Diaz, PA-C's National Provider Identifier (NPI) is 1467120543, issued on Sep 2, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Heather Christine Lowell Diaz, PA-C located?
The NPPES record lists a practice address at 9155 SW Barnes RD Ste 532, Portland, OR, 97225. Phone: (503) 488-2344. Providers update this record themselves, so call before visiting.
How can I verify Heather Christine Lowell Diaz, PA-C's license?
NPPES lists Oregon license number PA206659, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Heather Christine Lowell Diaz, PA-C prescribe under Medicare Part D?
In 2024, Heather Christine Lowell Diaz, PA-C had 1,422 Medicare Part D claims for 444 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.