Doctor profile · Federal record

Dr. Katherine Katsoyannis, M.D.

Specialist (CMS: Internal Medicine) · Park Ridge, IL

  • NPI 1023123015
  • Accepts Medicare
  • 39 yrs in practice
  • Female
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1600 Dempster St, Suite 120
Park Ridge, IL 600681109
(847) 299-7888
fax (847) 299-7844

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
December 18, 2021
Year of graduation
1987 — 39 yrs since
Specialty taxonomy
174400000X — NUCC code
State license (1)
Illinois #036096130
Medicaid
IL #036096130

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1023123015. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
2,598
Distinct HCPCS
10
Medicare allowed
$251,306
HCPCS Description Services Patients Avg allowed
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 456 193 $111
99308 Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 15 minutes 373 168 $78
99306 Initial nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes 188 165 $189
36415 Insertion of needle into vein for collection of blood sample 171 99 $8
G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and 165 119 $54
99348 Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes 161 104 $79
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 136 104 $133
99214 Established patient office or other outpatient visit, 30-39 minutes 123 73 $134
G0181 Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow 108 54 $108
G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit 93 93 $134

In context: peer comparison

Among 6 peers in Park Ridge Specialist, average services per provider: 103. This provider delivers 25× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$273
Transactions
8
Manufacturers
3
Payer (manufacturer) Industry Txns Amount
Lilly USA, LLC 4 $166.28
Novo Nordisk INC 3 $80.74
Iti, INC. (D/B/A Intra-Cellular Therapies, INC.) 1 $25.64

By nature of payment

Food and Beverage
$208
Education
$65

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
17,105
Patients
2,603
Total drug cost
$701,351
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 2,299 370 $30,353
Levothyroxine Sodium Generic 1,555 230 $20,611
Eliquis (Apixaban) Brand 1,330 172 $481,298
Amlodipine Besylate Generic 1,307 223 $12,569
Donepezil Hcl Generic 1,106 151 $14,583
Quetiapine Fumarate Generic 1,080 142 $15,497
Furosemide Generic 1,069 199 $6,647
Gabapentin Generic 977 159 $14,976
Metoprolol Succinate Generic 977 160 $16,289
Lisinopril Generic 947 146 $9,124

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Katherine Katsoyannis's medical specialty?
Dr. Katherine Katsoyannis practices Specialist in Park Ridge, IL.
Where does Dr. Katherine Katsoyannis practice?
Dr. Katherine Katsoyannis practices at 1600 Dempster St, Park Ridge, IL 600681109. Office phone: 8472997888.
What is Dr. Katherine Katsoyannis's NPI?
Dr. Katherine Katsoyannis's National Provider Identifier (NPI) is 1023123015, issued by NPPES.
Does Dr. Katherine Katsoyannis accept Medicare assignment?
Yes. Dr. Katherine Katsoyannis accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Katherine Katsoyannis commonly perform?
Top Medicare-reported procedures in 2023: Subsequent nursing facility care with moderate level of medical decision making (HCPCS 99309); Subsequent nursing facility care with straightforward level of medical decision making (HCPCS 99308); Initial nursing facility care with high level of medical decision making (HCPCS 99306). Source: CMS Medicare Physician & Other Practitioners file.