Tracy Williams Sax, MD
Neurology Physician · Portland, OR
Tracy Williams Sax, MD is a neurology physician with a practice address in Portland, Oregon, and NPI 1487647624, issued on Aug 23, 2005. Check the license (Oregon MD22230, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Tracy Williams Sax
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License numbers
- MD22230 OR
MD60199508 WA
Self-reported in NPPES; status is on the state search - Practice location
- 5050 NE Hoyt St, Portland, OR 97213
- Phone
- (503) 215-8580
- Enumerated
- Aug 23, 2005
- Record last updated
- Jul 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (503) 215-8585
- Medicaid ID
- 138036 OR
- Medicare enrollment
- Enrolled (PECOS I20040223000940); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 287 in Oregon → Look up another NPI →
Also registered at 5050 NE Hoyt St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tracy Williams Sax in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD22230Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average neurology physician in 2024
44 Medicare Part D claims for 12 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 57% of claims.
Most prescribed
- Botox22 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Providence Health And Services OregonPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tracy Williams Sax among 287 neurology physician records in Oregon
Tracy Williams Sax, MD is one of 287 neurology physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1995 · median 2007 among the 176 with a school on file
- Record last updated2021 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Oregon
There are 287 neurology physician records in Oregon.
All 287 in Oregon → Every provider in Portland → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Elise Anderson, MDPortland, OR 972131972764777
- Jessica Decker, DOPortland, OR 972131649835422
- Matthew Evans, DOPortland, OR 972131164647061
- Fikayo Falodun, MDPortland, OR 972131467030932
- Evan Fertig, MDPortland, OR 972131275515918
- Kimberly Goslin, MDPortland, OR 972131245222371
- Ghazaleh Jafari, MDPortland, OR 972131821258468
- Nicholas Olney, M.D.Portland, OR 972131447519830
Common questions
What is Tracy Williams Sax, MD's NPI number?
Tracy Williams Sax, MD's National Provider Identifier (NPI) is 1487647624, issued on Aug 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Tracy Williams Sax, MD located?
The NPPES record lists a practice address at 5050 NE Hoyt St, Portland, OR, 97213. Phone: (503) 215-8580. Providers update this record themselves, so call before visiting.
How can I verify Tracy Williams Sax, MD's license?
NPPES lists Oregon license number MD22230, 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 Tracy Williams Sax, MD prescribe under Medicare Part D?
In 2024, Tracy Williams Sax, MD had 44 Medicare Part D claims for 12 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Tracy Williams Sax, MD's MIPS final score?
The 2023 MIPS final score is 87.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.