Doctor profile · Federal record

Dr. William Harris, DO

Internal Medicine Physician (CMS: Internal Medicine) · Topeka, KS

  • NPI 1144200536
  • Accepts Medicare
  • 44 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
823 Sw Mulvane St
Topeka, KS 666061764
(785) 354-9591
fax (785) 368-0735

Credentials & registration

NPPES · NUCC
NPI registered
January 2006 — 20 yrs on file
Profile last updated
January 23, 2025
Year of graduation
1982 — 44 yrs since
Specialty taxonomy
207R00000X — NUCC code
State license (1)
Kansas #0523845
Medicaid
KS #100347660E

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1144200536. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
4,411
Distinct HCPCS
10
Medicare allowed
$374,359
HCPCS Description Services Patients Avg allowed
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 1,254 188 $75
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 732 194 $114
99214 Established patient office or other outpatient visit, 30-39 minutes 583 318 $120
36415 Insertion of needle into vein for collection of blood sample 477 305 $8
99223 Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 191 179 $165
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 190 190 $123
99213 Established patient office or other outpatient visit, 20-29 minutes 107 105 $85
77063 Screening 3d breast mammography 99 99 $22
77067 Screening mammography 99 99 $85
99215 Established patient office or other outpatient visit, 40-54 minutes 90 66 $168

In context: peer comparison

Among 14 peers in Topeka Internal Medicine Physician, average services per provider: 139. This provider delivers 32× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
3,196
Patients
1,053
Total drug cost
$44,536
Drug Type Claims Patients Total cost
Levothyroxine Sodium Generic 573 158 $7,727
Simvastatin Generic 334 86 $2,745
Atorvastatin Calcium Generic 311 116 $3,432
Lisinopril Generic 261 77 $2,333
Amlodipine Besylate Generic 259 101 $2,175
Pantoprazole Sodium Generic 214 97 $3,118
Gabapentin Generic 202 72 $3,252
Omeprazole Generic 192 51 $2,710
Losartan Potassium Generic 155 59 $2,249
Escitalopram Oxalate Generic 141 44 $1,745

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. William Harris's medical specialty?
Dr. William Harris practices Internal Medicine Physician in Topeka, KS.
Where does Dr. William Harris practice?
Dr. William Harris practices at 823 Sw Mulvane St, Topeka, KS 666061764. Office phone: 7853549591.
What is Dr. William Harris's NPI?
Dr. William Harris's National Provider Identifier (NPI) is 1144200536, issued by NPPES.
Does Dr. William Harris accept Medicare assignment?
Yes. Dr. William Harris accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Harris 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); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.