Tamara Shannan Simpson, MD
Orthopaedic Surgery Physician · Hermiston, OR
Tamara Shannan Simpson, MD is an orthopaedic surgery physician with a practice address in Hermiston, Oregon, and NPI 1003935388, issued on Mar 28, 2007. Check the license (Oregon MD21283, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Tamara Shannan Simpson
- Credential
- MD
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- MD21283 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1122 W Elm Ave, Hermiston, OR 97838
- Phone
- (541) 289-7075
- Enumerated
- Mar 28, 2007
- Record last updated
- Jun 10, 2026
- Fax
- (541) 314-4873
- Medicare enrollment
- Enrolled (PECOS I20080805000369); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2002
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 335 in Oregon → Look up another NPI →
Also registered at 1122 W Elm Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nathan CampPhysical Medicine & Rehabilitation Physician1225667918
- Donald Carlson, DPMPodiatrist1114087632
- Patrick Dawson, MDOrthopaedic Surgery Physician1831233139
- Kyle Duncan, DPMFoot & Ankle Surgery Podiatrist1598185712
- Merthel Rand, FNPFamily Nurse Practitioner1538146436
- Matthew Thompson, MDOrthopaedic Surgery Physician1326330580
Verify Tamara Shannan Simpson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD21283Check 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 orthopaedic surgery physician in 2024
38 Medicare Part D claims for 24 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 20 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen15 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): 83.8 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
- 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).
Tamara Shannan Simpson among 335 orthopaedic surgery physician records in Oregon
Tamara Shannan Simpson, MD is one of 335 orthopaedic surgery physician records with a practice address in Oregon. 61% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 60% of them.
- NPI issued2007 · 60% of these records are older, 30% newer
- In a Medicare fileYes · 61% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated2002 · median 2002 among the 165 with a school on file
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 orthopaedic surgery physician records list a practice address in Hermiston
They are 6 of the 479 NPPES records with a practice address in Hermiston, and 335 orthopaedic surgery physician records in Oregon.
All 335 in Oregon → Every provider in Hermiston → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- John Anderson, D.O.Hermiston, OR 978381881630440
- Patrick Dawson, MDHermiston, OR 978381831233139
- Matthew Thompson, MDHermiston, OR 978381326330580
- James Whittum, MDHermiston, OR 978381750321089
- Zhiqing Xing, M.D.Hermiston, OR 978381417129339
- Gregg Densmore, M.D.La Grande, OR 978501184624975
- James Kopp, M.D.La Grande, OR 978501750472304
- James Mathis, MDLa Grande, OR 978501225033350
Common questions
What is Tamara Shannan Simpson, MD's NPI number?
Tamara Shannan Simpson, MD's National Provider Identifier (NPI) is 1003935388, issued on Mar 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tamara Shannan Simpson, MD located?
The NPPES record lists a practice address at 1122 W Elm Ave, Hermiston, OR, 97838. Phone: (541) 289-7075. Providers update this record themselves, so call before visiting.
How can I verify Tamara Shannan Simpson, MD's license?
NPPES lists Oregon license number MD21283, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tamara Shannan Simpson, MD prescribe under Medicare Part D?
In 2024, Tamara Shannan Simpson, MD had 38 Medicare Part D claims for 24 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is Tamara Shannan Simpson, MD's MIPS final score?
The 2023 MIPS final score is 83.8 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.