Zachary Celestino Diiulio, M.D.
Internal Medicine Physician · Yakima, WA
Zachary Celestino Diiulio, M.D. is an internal medicine physician with a practice address in Yakima, Washington, and NPI 1194187518, issued on Mar 24, 2016. Check the license (Washington 60904809, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Zachary Celestino Diiulio
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 60904809 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2811 Tieton Dr, Yakima, WA 98902
- Phone
- (509) 249-5309
- Enumerated
- Mar 24, 2016
- Record last updated
- Jul 25, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (509) 249-5377
- Medicare enrollment
- Enrolled (PECOS I20190718000997); accepts Medicare assignment
- Medical or professional school
- Medical College Of Georgia School Of Medicine, 2016
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Zachary Celestino Diiulio in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license 60904809Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average internal medicine physician in 2024
364 Medicare Part D claims for 141 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Cefuroxime20 claims
- Oxycodone Hcl18 claims
- Eliquis13 claims
- Furosemide11 claims
- Potassium Chloride11 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): 79.2 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).
Bills Medicare through one group practice
- Overlake Medical Clinics LLCBellevue, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Zachary Celestino Diiulio among 3,079 internal medicine physician records in Washington
Zachary Celestino Diiulio, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 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 2016, is newer than 79% of them.
- NPI issued2016 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2016 · median 2006 among the 1,852 with a school on file
- Record last updated2019 · 63% 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 Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
49 internal medicine physician records list a practice address in Yakima
They are 49 of the 3,970 NPPES records with a practice address in Yakima, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Yakima → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Richard Boyd, MDYakima, WA 989021427072586
- Chester Chua, MDYakima, WA 989021437293206
- Christopher Clark, DOYakima, WA 989021740204825
- Thomas Ellingson, MDYakima, WA 989021427066083
- Joseph Forte, DOYakima, WA 989021952397440
- Michal Galeziok, M.D.Yakima, WA 989021861670200
- George Hotchko, MDYakima, WA 989021053335141
- Ajmal Kazman, MDYakima, WA 989021346387172
Common questions
What is Zachary Celestino Diiulio, M.D.'s NPI number?
Zachary Celestino Diiulio, M.D.'s National Provider Identifier (NPI) is 1194187518, issued on Mar 24, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Zachary Celestino Diiulio, M.D. located?
The NPPES record lists a practice address at 2811 Tieton Dr, Yakima, WA, 98902. Phone: (509) 249-5309. Providers update this record themselves, so call before visiting.
How can I verify Zachary Celestino Diiulio, M.D.'s license?
NPPES lists Washington license number 60904809, 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 Zachary Celestino Diiulio, M.D. prescribe under Medicare Part D?
In 2024, Zachary Celestino Diiulio, M.D. had 364 Medicare Part D claims for 141 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Zachary Celestino Diiulio, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.2 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.