Aaron Grossberg, MD, PHD
Radiation Oncology Physician · Portland, OR
Aaron Grossberg, MD, PHD is a radiation oncology physician with a practice address in Portland, Oregon, and NPI 1164775334, issued on Oct 24, 2012. Check the license (Oregon MD187282, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Aaron Grossberg
- Credential
- MD, PHD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- MD187282 OR
PG162936 OR
BP10048967 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD # L337, Portland, OR 97239
- Phone
- (503) 494-8756
- Enumerated
- Oct 24, 2012
- Record last updated
- Jan 28, 2022
- Fax
- (503) 346-0237
- Medicare enrollment
- Enrolled (PECOS I20180716000554); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 115 in Oregon → Look up another NPI →
Also registered at 3181 SW Sam Jackson Park RD # L337
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eric Chang, M.D.Radiation Oncology Physician1114304870
- Reid Thompson, MD PHDRadiation Oncology Physician1659662377
Verify Aaron Grossberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD187282Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average radiation oncology physician in 2024
20 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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 MIPS final score for 2023 (Medicare payment program): 97.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University Professional ServicesPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron Grossberg among 115 radiation oncology physician records in Oregon
Aaron Grossberg, MD, PHD is one of 115 radiation oncology physician records with a practice address in Oregon. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 69% of them.
- NPI issued2012 · 69% of these records are older, 28% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2013 · median 2006 among the 85 with a school on file
- Record last updated2022 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Oregon
There are 115 radiation oncology physician records in Oregon.
All 115 in Oregon → Every provider in Portland → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Eric Chang, M.D.Portland, OR 972391114304870
- Lanceford Chong, MDPortland, OR 972391821001736
- Mohammad Hissourou, MDPortland, OR 972391538664057
- John Holland, MDPortland, OR 972391104834662
- Arthur Hung, MDPortland, OR 972391609881119
- Jenna Kahn, M.D.Portland, OR 972391366855793
- Nima Nabavizadeh, MDPortland, OR 972391538453741
- Sahar Rosenbaum, MDPortland, OR 972391477537512
Common questions
What is Aaron Grossberg, MD, PHD's NPI number?
Aaron Grossberg, MD, PHD's National Provider Identifier (NPI) is 1164775334, issued on Oct 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Aaron Grossberg, MD, PHD located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD # L337, Portland, OR, 97239. Phone: (503) 494-8756. Providers update this record themselves, so call before visiting.
How can I verify Aaron Grossberg, MD, PHD's license?
NPPES lists Oregon license number MD187282, 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 Aaron Grossberg, MD, PHD prescribe under Medicare Part D?
In 2024, Aaron Grossberg, MD, PHD had 20 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Aaron Grossberg, MD, PHD's MIPS final score?
The 2023 MIPS final score is 97.8 of 100. 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.