Doctor profile · Federal record

Dr. Dennis Regan, MD

Hospitalist Physician (CMS: Hospitalist) · Internal Medicine Physician · Internal Medicine Physician · Internal Medicine Physician · Rochester, MN

  • NPI 1568510907
  • Accepts Medicare
  • 39 yrs in practice
  • Licensed in 3 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
200 1St St Sw
Rochester, MN 559050001
(507) 284-2511

Credentials & registration

NPPES · NUCC
NPI registered
January 2007 — 19 yrs on file
Profile last updated
February 2, 2021
Year of graduation
1987 — 39 yrs since
Specialty taxonomy
208M00000X — NUCC code
State licenses (4)
Minnesota #59227 · Oregon #MD157557 · Montana #6978 · Minnesota #108111

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1568510907. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
441
Distinct HCPCS
4
Medicare allowed
$42,000
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 285 83 $77
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 78 48 $116
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 39 37 $169
99239 Hospital discharge day management, more than 30 minutes 39 38 $112

In context: peer comparison

Among 39 peers in this city , average services per provider: 60. This provider delivers 7.4× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
102
Patients
0
Total drug cost
$9,940
Drug Type Claims Patients Total cost
Eliquis (Apixaban) Brand 20 0 $8,252
Rosuvastatin Calcium Generic 16 0 $274
Levothyroxine Sodium Generic 14 0 $208
Metformin Hcl Generic 14 0 $210
Lisinopril Generic 13 0 $185
Taztia Xt (Diltiazem Hcl) Brand 13 0 $526
Torsemide Generic 12 0 $284

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Dennis Regan's medical specialty?
Dr. Dennis Regan practices Hospitalist Physician in Rochester, MN.
Where does Dr. Dennis Regan practice?
Dr. Dennis Regan practices at 200 1St St Sw, Rochester, MN 559050001. Office phone: 5072842511.
What is Dr. Dennis Regan's NPI?
Dr. Dennis Regan's National Provider Identifier (NPI) is 1568510907, issued by NPPES.
Does Dr. Dennis Regan accept Medicare assignment?
Yes. Dr. Dennis Regan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Dennis Regan commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Initial hospital care with moderate level of medical decision making (HCPCS 99223). Source: CMS Medicare Physician & Other Practitioners file.