Matthew S. Ray, DO
Nephrology Physician · Spokane, WA
Matthew S. Ray, DO is a nephrology physician with a practice address in Spokane, Washington, and NPI 1275952541, issued on Apr 15, 2014. Check the license (Washington OP60645891, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Matthew S. Ray
- Credential
- DO
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- OP60645891 WA
TL.0007356 CO
Self-reported in NPPES; status is on the state search - Practice location
- 400 E 5TH Ave # 4N, Spokane, WA 99202
- Phone
- (509) 342-3915
- Enumerated
- Apr 15, 2014
- Record last updated
- Dec 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (509) 342-3916
- Medicare enrollment
- Enrolled (PECOS I20180213000417); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2014
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 284 in Washington → Look up another NPI →
Verify Matthew S. Ray in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license OP60645891Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% more Medicare Part D claims than the average nephrology physician in 2024
2,245 Medicare Part D claims for 327 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. 39 claims were for opioids.
Most prescribed
- Amlodipine Besylate131 claims
- Lisinopril120 claims
- Jardiance108 claims
- Allopurinol104 claims
- Carvedilol103 claims
- Calcitriol99 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: $937.72
10 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 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
- Multicare Health SystemSpokane, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew S. Ray among 284 nephrology physician records in Washington
Matthew S. Ray, DO is one of 284 nephrology physician records with a practice address in Washington. 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 2014, is newer than 80% of them.
- NPI issued2014 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated2014 · median 2003 among the 213 with a school on file
- Record last updated2020 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Washington
There are 284 nephrology physician records in Washington.
All 284 in Washington → Every provider in Spokane → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Robert Benedetti, MDSpokane, WA 992021760484588
- Mark Anthony Cabrera, M.D.Spokane, WA 992021659524924
- Constance Christ, MD, PHDSpokane, WA 992021023098860
- Catherine Larned, M.D.Spokane, WA 992021265795942
- Satinder Singh, M.D.Spokane, WA 992021508013749
- Richard Carson, MDSpokane, WA 992041114929668
- Nelson Chow, MDSpokane, WA 992041427142470
- Ashutosh Mahajan, MDSpokane, WA 992041932140183
Common questions
What is Matthew S. Ray, DO's NPI number?
Matthew S. Ray, DO's National Provider Identifier (NPI) is 1275952541, issued on Apr 15, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Matthew S. Ray, DO located?
The NPPES record lists a practice address at 400 E 5TH Ave # 4N, Spokane, WA, 99202. Phone: (509) 342-3915. Providers update this record themselves, so call before visiting.
How can I verify Matthew S. Ray, DO's license?
NPPES lists Washington license number OP60645891, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Matthew S. Ray, DO prescribe under Medicare Part D?
In 2024, Matthew S. Ray, DO had 2,245 Medicare Part D claims for 327 beneficiaries; the average among nephrology physician prescribers was 1,465. 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.