Jason Greyslak, DMD, MS
Dentist · Hermiston, OR
Jason Greyslak, DMD, MS is a dentist with a practice address in Hermiston, Oregon, and NPI 1417358961, issued on Sep 15, 2014. Check the license (Oregon D10127, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jason Greyslak
- Credential
- DMD, MS
- Primary taxonomy
- Dentist 122300000X
- License number
- D10127 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1050 W Elm Ave, Hermiston, OR 97838
- Phone
- (888) 468-0022
- Enumerated
- Sep 15, 2014
- Entity
- Type 1 · individual
Also registered at 1050 W Elm Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brent Bakken, DDSGeneral Practice Dentistry1316094550
- G. Fulton, DDSDentist1932360807
- Joseph Gifford, M.D.Family Medicine Physician1952307183
- Matthew Hayden, DDSGeneral Practice Dentistry1174506000
- Terry McMichael, R.R.T.Radiologic Technologist1528369899
- Julian Petersen, DDSDentist1316175185
Verify Jason Greyslak in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license D10127Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
51% fewer Medicare Part D claims than the average dentist in 2024
44 Medicare Part D claims for 28 beneficiaries, against an average of 90 among the 51,502 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Amoxicillin28 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.
8 dentist records list a Hermiston practice address
They are 8 of the 479 NPPES records with a Hermiston practice address, and 1,295 dentist records in Oregon.
All 8 in Hermiston → All 1,295 in Oregon → Every provider in Hermiston →
Other dentist records in Oregon
- Tamara Abbett, D.D.S.Medford, OR1972504710
- Kyoko Abe, D.M.DPortland, OR1629142641
- Daniel Adair, D.D.S.Salem, OR1609287143
- Christopher Adams, D.D.S.Roseburg, OR1487886321
- Kathleene Adams, DMDPortland, OR1063582252
- Ranier Adarve, DMDPortland, OR1982789848
- Priyadarshini AgrawalNorth Bend, OR1912354689
- Azma Ahmed, DDSPortland, OR1417341983
- Nicholas Ahn, DMDNorth Bend, OR1912510678
- Lee Albrecht, DMDSalem, OR1639338130
Common questions
What is Jason Greyslak, DMD, MS's NPI number?
Jason Greyslak, DMD, MS's National Provider Identifier (NPI) is 1417358961, issued on Sep 15, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Jason Greyslak, DMD, MS located?
The NPPES record lists a practice address at 1050 W Elm Ave, Hermiston, OR, 97838. Phone: (888) 468-0022. Providers update this record themselves, so call before visiting.
How can I verify Jason Greyslak, DMD, MS's license?
NPPES lists Oregon license number D10127, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Jason Greyslak, DMD, MS prescribe under Medicare Part D?
In 2024, Jason Greyslak, DMD, MS had 44 Medicare Part D claims for 28 beneficiaries; the average among dentist prescribers was 90. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.