Doctor profile · Federal record

Dr. Sacha Thomas, M.D.

Internal Medicine Physician (CMS: Internal Medicine) · Hospitalist Physician · Madison, WI

  • NPI 1851520837
  • Accepts Medicare
  • 17 yrs in practice
  • Female
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
700 S Park St
Madison, WI 537151830
(608) 251-6100
fax (608) 258-6259

Credentials & registration

NPPES · NUCC
NPI registered
July 2009 — 17 yrs on file
Profile last updated
December 17, 2012
Year of graduation
2009 — 17 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Wisconsin #56218-020

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1851520837. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
409
Distinct HCPCS
6
Medicare allowed
$46,232
HCPCS Description Services Patients Avg allowed
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 174 86 $124
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 79 47 $82
99231 Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 62 33 $50
99239 Hospital discharge day management, more than 30 minutes 44 44 $123
99291 Critical care, first 30-74 minutes 31 13 $196
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 19 19 $185

In context: peer comparison

Among 76 peers in Madison Internal Medicine Physician, average services per provider: 80. This provider delivers 5.1× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
11
Patients
0
Total drug cost
$165
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 11 0 $165

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Sacha Thomas's medical specialty?
Dr. Sacha Thomas practices Internal Medicine Physician in Madison, WI.
Where does Dr. Sacha Thomas practice?
Dr. Sacha Thomas practices at 700 S Park St, Madison, WI 537151830. Office phone: 6082516100.
What is Dr. Sacha Thomas's NPI?
Dr. Sacha Thomas's National Provider Identifier (NPI) is 1851520837, issued by NPPES.
Does Dr. Sacha Thomas accept Medicare assignment?
Yes. Dr. Sacha Thomas accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sacha Thomas commonly perform?
Top Medicare-reported procedures in 2023: Subsequent hospital care with moderate levelof medical decision making (HCPCS 99233); Subsequent hospital care with moderate levelof medical decision making (HCPCS 99232); Subsequent hospital care with straightforward or low level of medical decision making (HCPCS 99231). Source: CMS Medicare Physician & Other Practitioners file.