Doctor profile · Federal record

Dr. Ari Nahum, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Internal Medicine Physician · Saint Paul, MN

  • NPI 1538503719
  • Accepts Medicare
  • 13 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
640 Jackson St
Saint Paul, MN 55101
(651) 254-3456
fax (651) 254-9673
Additional location
420 Delaware St Se, Mmc 284
Minneapolis, MN 554550341
(612) 625-5454
Mailing address
8170 33Rd Ave, MS 21110Q
Bloomington, MN 554254516

Credentials & registration

NPPES · NUCC
NPI registered
April 2013 — 13 yrs on file
Profile last updated
June 14, 2023
Year of graduation
2013 — 13 yrs since
Specialty taxonomy
207R00000X — NUCC code
State licenses (2)
Minnesota #60230 · Wisconsin #69932-20

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1538503719. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
259
Distinct HCPCS
8
Medicare allowed
$29,501
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 58 23 $83
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 45 30 $113
99215 Established patient office or other outpatient visit, 40-54 minutes 40 21 $132
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 37 23 $77
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 28 27 $162
99214 Established patient office or other outpatient visit, 30-39 minutes 27 19 $107
99215 Established patient office or other outpatient visit, 40-54 minutes 13 11 $163
99205 New patient office or other outpatient visit, 60-74 minutes 11 11 $175

In context: peer comparison

Among 83 peers in Saint Paul Internal Medicine Physician, average services per provider: 109. This provider delivers 2.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
632
Patients
120
Total drug cost
$32,231
Drug Type Claims Patients Total cost
Oxycodone Hcl Generic 146 33 $12,177
Methadone Hcl Generic 110 28 $1,713
Hydromorphone Hcl Generic 100 21 $5,596
Pregabalin Generic 40 0 $891
Gabapentin Generic 37 15 $897
Tramadol Hcl Generic 30 12 $265
Duloxetine Hcl Generic 28 11 $1,452
Furosemide Generic 25 0 $165
Methylphenidate Hcl Generic 22 0 $266
Buprenorphine-Naloxone (Buprenorphine Hcl/Naloxone Hcl) Brand 18 0 $3,460

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Ari Nahum's medical specialty?
Dr. Ari Nahum practices Internal Medicine Physician in Saint Paul, MN.
Where does Dr. Ari Nahum practice?
Dr. Ari Nahum practices at 640 Jackson St, Saint Paul, MN 55101. Office phone: 6512543456.
What is Dr. Ari Nahum's NPI?
Dr. Ari Nahum's National Provider Identifier (NPI) is 1538503719, issued by NPPES.
Does Dr. Ari Nahum accept Medicare assignment?
Yes. Dr. Ari Nahum accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ari Nahum commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Established patient office or other outpatient visit (HCPCS 99215). Source: CMS Medicare Physician & Other Practitioners file.