Mark A. Backus, M.D.
Internal Medicine Physician · Bend, OR
Mark A. Backus, M.D. is an internal medicine physician with a practice address in Bend, Oregon, and NPI 1588693105, issued on Jul 3, 2006. Check the license (Oregon MD22701, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark A. Backus
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD22701 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2239 NE Doctors Dr Ste 200, Bend, OR 97701
- Phone
- (541) 318-0124
- Enumerated
- Jul 3, 2006
- Record last updated
- Feb 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (541) 318-0188
- Medicaid ID
- 288094 OR
- Medicare enrollment
- Enrolled (PECOS I20070111000673); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 1993
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Verify Mark A. Backus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD22701Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% more Medicare Part D claims than the average internal medicine physician in 2024
6,116 Medicare Part D claims for 434 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 32 claims were for opioids.
Most prescribed
- Atorvastatin Calcium701 claims
- Losartan Potassium407 claims
- Rosuvastatin Calcium307 claims
- Amlodipine Besylate239 claims
- Levothyroxine Sodium229 claims
- Omeprazole203 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.
Industry payments in 2024: $17.40
1 payment: food and beverage; the largest payer was Phathom Pharmaceuticals, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Cascade Internal Medicine Specialists LLCBend, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark A. Backus among 2,116 internal medicine physician records in Oregon
Mark A. Backus, M.D. is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1993 · median 2008 among the 1,232 with a school on file
- Record last updated2020 · 58% 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
97 internal medicine physician records list a practice address in Bend
They are 97 of the 5,313 NPPES records with a practice address in Bend, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Bend → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- John Corso, M.D.Bend, OR 977011487624409
- Jeffrey Davis, MDBend, OR 977011942205752
- David Donnelly, M.D.Bend, OR 977011952355828
- Benjamin England, M.D.Bend, OR 977011114916186
- Christina Ford, MDBend, OR 977011528057593
- Gary Hood, MDBend, OR 977011316942709
- Robin Lannan, M.D.Bend, OR 977011467401273
- Lisa Lewis, M.D.Bend, OR 977011962486621
Common questions
What is Mark A. Backus, M.D.'s NPI number?
Mark A. Backus, M.D.'s National Provider Identifier (NPI) is 1588693105, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Backus, M.D. located?
The NPPES record lists a practice address at 2239 NE Doctors Dr Ste 200, Bend, OR, 97701. Phone: (541) 318-0124. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Backus, M.D.'s license?
NPPES lists Oregon license number MD22701, 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 Mark A. Backus, M.D. prescribe under Medicare Part D?
In 2024, Mark A. Backus, M.D. had 6,116 Medicare Part D claims for 434 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.