Rom Samuel Leidner, MD
Medical Oncology Physician · Portland, OR
Rom Samuel Leidner, MD is a medical oncology physician with a practice address in Portland, Oregon, and NPI 1801908702, issued on Aug 31, 2006. Check the license (Oregon MD159938, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Rom Samuel Leidner
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- MD159938 OR
57.012492 OH
MD00044911 WA
Self-reported in NPPES; status is on the state search - Practice location
- 4805 NE Glisan St, Portland, OR 97213
- Phone
- (503) 215-5696
- Enumerated
- Aug 31, 2006
- Record last updated
- Mar 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 8441743 WA
- Medicare enrollment
- Enrolled (PECOS I20121210000122); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 107 in Oregon → Look up another NPI →
Also registered at 4805 NE Glisan St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bethany Adams, DNP, AGACNPGerontology Nurse Practitioner1053955047
- Elie Adwani, MDStudent in an Organized Health Care Education/Training Program1952262453
- Rehan Ahmad, MDColon & Rectal Surgery Physician1750457990
- Stephanie Ahmed, MDObstetrics & Gynecology Physician1447269170
- Shaghayegh Aliabadi, M.D.Surgery Physician1083785562
- Anna Apostolou-Keith, RD, LDNRegistered Dietitian1639838790
Verify Rom Samuel Leidner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD159938Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average medical oncology physician in 2024
582 Medicare Part D claims for 62 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 55 claims were for opioids.
Most prescribed
- Levothyroxine Sodium82 claims
- Prednisone41 claims
- Oxycodone Hcl35 claims
- Dexamethasone30 claims
- Prochlorperazine Maleate28 claims
- Omeprazole26 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): 87.8 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).
Industry payments in 2024: $4,586.04
5 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca UK Limited. The 3,343 providers of this specialty with any payment received $11,773.47 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
- Providence Health And Services OregonPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Rom Samuel Leidner among 107 medical oncology physician records in Oregon
Rom Samuel Leidner, MD is one of 107 medical oncology physician records with a practice address in Oregon. 79% 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 19% of them.
- NPI issued2006 · 19% of these records are older, 49% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1999 · median 2003 among the 76 with a school on file
- Record last updated2021 · 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 207RX0202X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Oregon
There are 107 medical oncology physician records in Oregon.
All 107 in Oregon → Every provider in Portland → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Alison Conlin, MDPortland, OR 972131841460193
- Todd Crocenzi, M.D.Portland, OR 972131336130806
- Brendan Curti, MDPortland, OR 972131861494650
- Bruce Dana, M.D.Portland, OR 972131558364570
- Mary Gearn, MDPortland, OR 972131972532836
- Robert Lufkin, D.O.Portland, OR 972131013932854
- David Page, M.D.Portland, OR 972131922241140
- Rachel Sanborn, MDPortland, OR 972131275548794
Common questions
What is Rom Samuel Leidner, MD's NPI number?
Rom Samuel Leidner, MD's National Provider Identifier (NPI) is 1801908702, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Rom Samuel Leidner, MD located?
The NPPES record lists a practice address at 4805 NE Glisan St, Portland, OR, 97213. Phone: (503) 215-5696. Providers update this record themselves, so call before visiting.
How can I verify Rom Samuel Leidner, MD's license?
NPPES lists Oregon license number MD159938, 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 Rom Samuel Leidner, MD prescribe under Medicare Part D?
In 2024, Rom Samuel Leidner, MD had 582 Medicare Part D claims for 62 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Rom Samuel Leidner, MD's MIPS final score?
The 2023 MIPS final score is 87.8 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.