Ari L. Nahum, M.D.
Internal Medicine Physician · Saint Paul, MN
Ari L. Nahum, M.D. is an internal medicine physician with a practice address in Saint Paul, Minnesota, and NPI 1538503719, issued on Apr 18, 2013. Check the license (Minnesota 60230, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.
- Name
- Ari L. Nahum
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 60230 MN
69932-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 640 Jackson St, Saint Paul, MN 55101
- Phone
- (651) 254-3456
- Enumerated
- Apr 18, 2013
- Record last updated
- Jun 14, 2023
- Fax
- (651) 254-9673
- Medicare enrollment
- Enrolled (PECOS I20180921001160); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,632 in Minnesota → Look up another NPI →
Also registered at 640 Jackson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ryan Ahlgren, NPPhysician Assistant1922776129
Verify Ari L. Nahum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMinnesota Board of Medical Practice
Search for license 60230Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
76% fewer Medicare Part D claims than the average internal medicine physician in 2024
764 Medicare Part D claims for 94 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 361 claims were for opioids.
Most prescribed
- Hydromorphone Hcl89 claims
- Oxycodone Hcl60 claims
- Methadone Hcl41 claims
- Celecoxib40 claims
- Buprenorphine38 claims
- Tramadol Hcl35 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.
Bills Medicare through one group practice
- Group Health Plan IncSaint Paul, MN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ari L. Nahum among 2,632 internal medicine physician records in Minnesota
Ari L. Nahum, M.D. is one of 2,632 internal medicine physician records with a practice address in Minnesota. 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 2013, is newer than 64% of them.
- NPI issued2013 · 64% of these records are older, 34% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2013 · median 2008 among the 1,700 with a school on file
- Record last updated2023 · 57% 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 Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
254 internal medicine physician records list a practice address in Saint Paul
They are 254 of the 10,084 NPPES records with a practice address in Saint Paul, and 2,632 internal medicine physician records in Minnesota.
All 2,632 in Minnesota → Every provider in Saint Paul → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Amy Barger, MDSt Paul, MN 551011225009681
- Mark Erpelding, MDSt Paul, MN 551011659345445
- Shaun Frost, MDSaint Paul, MN 551011982677308
- Mohamed Hagi Aden, MDSt Paul, MN 551011093786469
- Richard Hilger, MDSaint Paul, MN 551011164493516
- Burke Kealey, MDSaint Paul, MN 551011154395010
- Richard Mahr, MDSaint Paul, MN 551011851363634
- Karen Moeller, MDSaint Paul, MN 551011679545453
Common questions
What is Ari L. Nahum, M.D.'s NPI number?
Ari L. Nahum, M.D.'s National Provider Identifier (NPI) is 1538503719, issued on Apr 18, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Ari L. Nahum, M.D. located?
The NPPES record lists a practice address at 640 Jackson St, Saint Paul, MN, 55101. Phone: (651) 254-3456. Providers update this record themselves, so call before visiting.
How can I verify Ari L. Nahum, M.D.'s license?
NPPES lists Minnesota license number 60230, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ari L. Nahum, M.D. prescribe under Medicare Part D?
In 2024, Ari L. Nahum, M.D. had 764 Medicare Part D claims for 94 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.