Eun Joo Oh, MD
Internal Medicine Physician · Oro Valley, AZ
Eun Joo Oh, MD is an internal medicine physician with a practice address in Oro Valley, Arizona, and NPI 1558391672, issued on Jul 4, 2006. Check the license (Arizona 41023, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Eun Joo Oh
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 41023 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 555 E Vuelta Caminata Del Rio, Oro Valley, AZ 85737
- Phone
- (520) 547-5688
- Enumerated
- Jul 4, 2006
- Record last updated
- Jun 1, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (520) 547-4661
- Medicare enrollment
- Enrolled (PECOS I20081126000529); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Verify Eun Joo Oh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 41023Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% more Medicare Part D claims than the average internal medicine physician in 2024
4,122 Medicare Part D claims for 185 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims. 80 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium337 claims
- Lisinopril163 claims
- Pantoprazole Sodium148 claims
- Ozempic127 claims
- Amlodipine Besylate119 claims
- Synthroid100 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: $746.80
36 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. 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
- Oro Valley Adult Medicine PA LLCOro Valley, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eun Joo Oh among 2,853 internal medicine physician records in Arizona
Eun Joo Oh, MD is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% 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 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2002 · median 2003 among the 1,643 with a school on file
- Record last updated2018 · 51% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 internal medicine physician records list a practice address in Oro Valley
They are 14 of the 542 NPPES records with a practice address in Oro Valley, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Oro Valley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Lisa Emmans, MDTucson, AZ 857371356417414
- Michael Finkelstein, M.D.Oro Valley, AZ 857371417932286
- Sanjaya Hebbar, M.D.Oro Valley, AZ 857371366435455
- Sebastian Silva, MDTucson, AZ 857371639668411
- James Yanes, M.D,Tucson, AZ 857371730372251
- Gerald Coats, MDTucson, AZ 857391114979879
- Joyce Honorof, M.D.Tucson, AZ 857391376511196
- Robert Kalinske, M.D.Tucson, AZ 857391144382318
Common questions
What is Eun Joo Oh, MD's NPI number?
Eun Joo Oh, MD's National Provider Identifier (NPI) is 1558391672, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Eun Joo Oh, MD located?
The NPPES record lists a practice address at 555 E Vuelta Caminata Del Rio, Oro Valley, AZ, 85737. Phone: (520) 547-5688. Providers update this record themselves, so call before visiting.
How can I verify Eun Joo Oh, MD's license?
NPPES lists Arizona license number 41023, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Eun Joo Oh, MD prescribe under Medicare Part D?
In 2024, Eun Joo Oh, MD had 4,122 Medicare Part D claims for 185 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.