Marissa Elizabeth Lachaga, PA-S
Physician Assistant · Hermiston, OR
Marissa Elizabeth Lachaga, PA-S is a physician assistant with a practice address in Hermiston, Oregon, and NPI 1396397659, issued on Jul 16, 2019. Check the license (Oregon PA212471, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Marissa Elizabeth Lachaga
- Credential
- PA-S
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- PA212471 OR
8438012-1206 UT
Self-reported in NPPES; status is on the state search - Practice location
- 600 NW 11TH St Ste E37, Hermiston, OR 97838
- Phone
- (541) 567-5305
- Enumerated
- Jul 16, 2019
- Record last updated
- Jun 11, 2026
- Fax
- (541) 667-3831
- Medicare enrollment
- Enrolled (PECOS I20221005000575); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,094 in Oregon → Look up another NPI →
Also registered at 600 NW 11TH St Ste E37
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Daniel Buck, M.D.Family Medicine Physician1629307087
- Ashley Christensen, ARNPFamily Nurse Practitioner1073082046
- Christopher David, MDChild & Adolescent Psychiatry Physician1508362849
- Vivienne Evans, A.R.N.P.Nurse Practitioner1568492486
- Michael Hall, RDRegistered Dietitian1487134557
- Phyllis Hansell, FNP-CFamily Nurse Practitioner1023101631
Verify Marissa Elizabeth Lachaga in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license PA212471Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
23% more Medicare Part D claims than the average physician assistant in 2024
1,025 Medicare Part D claims for 129 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium100 claims
- Lisinopril76 claims
- Metformin Hcl56 claims
- Amlodipine Besylate50 claims
- Losartan Potassium39 claims
- Levothyroxine Sodium34 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.
Bills Medicare through one group practice
- Good Shepherd Health Care SystemHermiston, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marissa Elizabeth Lachaga among 2,094 physician assistant records in Oregon
Marissa Elizabeth Lachaga, PA-S is one of 2,094 physician assistant records with a practice address in Oregon. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 62% of them.
- NPI issued2019 · 62% of these records are older, 33% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2020 · median 2017 among the 1,552 with a school on file
- Record last updated2026 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 physician assistant records list a practice address in Hermiston
They are 17 of the 479 NPPES records with a practice address in Hermiston, and 2,094 physician assistant records in Oregon.
All 2,094 in Oregon → Every provider in Hermiston → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sanyi Yoseph AbdissaHermiston, OR 978381083356018
- Daniel Brown, PA-CHermiston, OR 978381699090407
- Chris Dinardo, PAHermiston, OR 978381700349404
- Sarah DynesHermiston, OR 978381730668161
- Lori Farmer, PA-CHermiston, OR 978381932504115
- Sarah GalvezHermiston, OR 978381619333887
- Maria HoldenHermiston, OR 978381306517685
- Jason JohnstonHermiston, OR 978381740547439
Common questions
What is Marissa Elizabeth Lachaga, PA-S's NPI number?
Marissa Elizabeth Lachaga, PA-S's National Provider Identifier (NPI) is 1396397659, issued on Jul 16, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Marissa Elizabeth Lachaga, PA-S located?
The NPPES record lists a practice address at 600 NW 11TH St Ste E37, Hermiston, OR, 97838. Phone: (541) 567-5305. Providers update this record themselves, so call before visiting.
How can I verify Marissa Elizabeth Lachaga, PA-S's license?
NPPES lists Oregon license number PA212471, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Marissa Elizabeth Lachaga, PA-S prescribe under Medicare Part D?
In 2024, Marissa Elizabeth Lachaga, PA-S had 1,025 Medicare Part D claims for 129 beneficiaries; the average among physician assistant prescribers was 830. 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.