Sayumi De Silva, M.D.
Internal Medicine Physician · Chinle, AZ
Sayumi De Silva, M.D. is an internal medicine physician with a practice address in Chinle, Arizona, and NPI 1376770768, issued on Jun 12, 2009. Check the license on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Sayumi De Silva
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A116754 CA
Self-reported in NPPES; status is on the state search - Practice location
- Hwy 191 And Hospital Drive, Chinle, AZ 86503
- Phone
- (928) 674-7166
- Enumerated
- Jun 12, 2009
- Record last updated
- Mar 3, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (928) 674-7705
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at Hwy 191 And Hospital Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alina Hall, RDRegistered Dietitian1659791143
- Micaela Theisen, DNP, FNP-BCFamily Nurse Practitioner1902158421
Verify Sayumi De Silva in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average internal medicine physician in 2024
985 Medicare Part D claims for 53 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Atorvastatin Calcium120 claims
- Lisinopril85 claims
- Metformin Hcl63 claims
- Gabapentin46 claims
- Amlodipine Besylate45 claims
- Lantus Solostar31 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): 84.2 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).
Sayumi De Silva among 2,853 internal medicine physician records in Arizona
Sayumi De Silva, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 57% of them.
- NPI issued2009 · 57% of these records are older, 40% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2016 · 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 207R00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 internal medicine physician records list a practice address in Chinle
They are 14 of the 238 NPPES records with a practice address in Chinle, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Chinle → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Beulah Allen, INTERNAL MEDICINEChinle, AZ 865031558431445
- Ethan Bornstein, M.D.Chinle, AZ 865031558789933
- Mary Evans, M.D.Chinle, AZ 865031598931495
- Amanda Gelman, MDChinle, AZ 865031003233990
- Vladimir Ioffe, M.D.Chinle, AZ 865031538199088
- Ezra Lichtman, MDChinle, AZ 865031720660285
- Donald Miles, MDChinle, AZ 865031831517887
- Xavier Orcutt, MDChinle, AZ 865031336609023
Common questions
What is Sayumi De Silva, M.D.'s NPI number?
Sayumi De Silva, M.D.'s National Provider Identifier (NPI) is 1376770768, issued on Jun 12, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Sayumi De Silva, M.D. located?
The NPPES record lists a practice address at Hwy 191 And Hospital Drive, Chinle, AZ, 86503. Phone: (928) 674-7166. Providers update this record themselves, so call before visiting.
How can I verify Sayumi De Silva, M.D.'s license?
Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Sayumi De Silva, M.D. prescribe under Medicare Part D?
In 2024, Sayumi De Silva, M.D. had 985 Medicare Part D claims for 53 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Sayumi De Silva, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.2 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.