Doctor profile · Federal record

Dr. Thomas Regenbogen, MD

Medical Oncology Physician (CMS: Internal Medicine) · Internal Medicine Physician · Internal Medicine Physician · Hematology & Oncology Physician · Ypsilanti, MI

  • NPI 1326369794
  • Accepts Medicare
  • 16 yrs in practice
  • Licensed in 2 states
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
5303 Elliot Dr.
Ypsilanti, MI 48197
(734) 712-1000
fax (734) 712-1012
Mailing address
24 Frank Lloyd Wright Drive, Suite J2000
Ann Arbor, MI 48105

Credentials & registration

NPPES · NUCC
NPI registered
June 2010 — 16 yrs on file
Profile last updated
December 19, 2024
Year of graduation
2010 — 16 yrs since
Specialty taxonomy
207RX0202X — NUCC code
State licenses (2)
Michigan #4301111453 · Missouri #2013020343

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1326369794. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
554
Distinct HCPCS
9
Medicare allowed
$73,847
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 204 158 $108
99215 Established patient office or other outpatient visit, 40-54 minutes 190 115 $158
99213 Established patient office or other outpatient visit, 20-29 minutes 36 34 $82
99205 New patient office or other outpatient visit, 60-74 minutes 26 26 $219
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 24 24 $125
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 24 24 $174
99204 New patient office or other outpatient visit, 45-59 minutes 18 18 $153
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 17 14 $120
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 15 13 $80

In context: peer comparison

Among 6 peers in this city , average services per provider: 82. This provider delivers 6.8× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
789
Patients
262
Total drug cost
$1,052,557
Drug Type Claims Patients Total cost
Dexamethasone Generic 84 43 $1,540
Hydroxyurea Generic 84 18 $1,896
Prednisone Generic 75 28 $427
Acyclovir Generic 74 20 $973
Anastrozole Generic 73 32 $3,422
Prochlorperazine Maleate Generic 72 48 $1,757
Eliquis (Apixaban) Brand 70 19 $52,090
Olanzapine Generic 46 20 $437
Ondansetron Odt (Ondansetron) Brand 42 22 $843
Imbruvica (Ibrutinib) Brand 36 0 $590,100

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Regenbogen's medical specialty?
Dr. Thomas Regenbogen practices Medical Oncology Physician in Ypsilanti, MI.
Where does Dr. Thomas Regenbogen practice?
Dr. Thomas Regenbogen practices at 5303 Elliot Dr., Ypsilanti, MI 48197. Office phone: 7347121000.
What is Dr. Thomas Regenbogen's NPI?
Dr. Thomas Regenbogen's National Provider Identifier (NPI) is 1326369794, issued by NPPES.
Does Dr. Thomas Regenbogen accept Medicare assignment?
Yes. Dr. Thomas Regenbogen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Regenbogen commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99213). Source: CMS Medicare Physician & Other Practitioners file.