What is Katherine Katsoyannis's NPI number?

Katherine Katsoyannis's National Provider Identifier (NPI) is 1023123015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Katherine Katsoyannis's specialty?

Katherine Katsoyannis is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).

Where is Katherine Katsoyannis located?

Katherine Katsoyannis's practice location on file with NPPES is 1600 Dempster St, Park Ridge, IL 60068-1109.

What is Katherine Katsoyannis's phone number?

The practice phone number listed in the NPPES registry for Katherine Katsoyannis is (847) 299-7888.

Does Katherine Katsoyannis accept Medicare?

Katherine Katsoyannis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Katherine Katsoyannis's NPI active?

Yes — Katherine Katsoyannis's NPI (1023123015) is active in the NPPES registry as of the last update on 2021-12-18.

IndividualActiveAccepts Medicare

Katherine Katsoyannis, M.D.

NPI 1023123015 · Specialist · Park Ridge, IL

Katherine Katsoyannis, M.D. is a Specialist provider in Park Ridge, IL (NPI 1023123015).

Provider details

NPI number: 1023123015
Entity type: Individual
Primary specialty: SpecialistOther Service Providers
Credential: M.D.
Sex: Female
Sole proprietor: Yes
License: 036096130 (IL)

Practice location

1600 Dempster St

Suite 120

Park Ridge, IL 60068-1109

Phone: (847) 299-7888

Fax: (847) 299-7844

Approximate (ZIP-level) locationGet directions

More IL providers

Mailing address

1600 Dempster St

Park Ridge, IL 60068-1109

Specialties & taxonomies

SpecialistPrimary174400000XLicense 036096130 (IL)
Other Service Providers

Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(79/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure25% of score
20 yrs in NPPES registry
Profile completeness25% of score
100% of core fields populated
Practice footprint15% of score
1 documented practice location
Medicare service volume (vs. specialty peers)25% of score
2,017 Medicare services, 2024 (ranked within specialty)
Open Payments transparency10% of score
Has Open Payments disclosures (2024)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	266	$110
Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308	261	$77
Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308	218	$76
Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348	138	$77
Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349	126	$129
Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 331 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Atorvastatin Calcium	2,830	388
Levothyroxine Sodium	1,782	226
Amlodipine Besylate	1,710	214
Apixabanbrand: Eliquis	1,692	190
Donepezil Hcl	1,240	163
Furosemide	1,228	198
Escitalopram Oxalate

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$273 across 8 records (Open Payments 2024)

Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.

Enumerated: 2006-08-20
Last updated: 2021-12-18
Certified: 2021-12-18

Frequently asked questions

What is Katherine Katsoyannis's NPI number?: Katherine Katsoyannis's National Provider Identifier (NPI) is 1023123015, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Katherine Katsoyannis's specialty?: Katherine Katsoyannis is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
Where is Katherine Katsoyannis located?: Katherine Katsoyannis's practice location on file with NPPES is 1600 Dempster St, Park Ridge, IL 60068-1109.
What is Katherine Katsoyannis's phone number?: The practice phone number listed in the NPPES registry for Katherine Katsoyannis is (847) 299-7888.
Does Katherine Katsoyannis accept Medicare?: Katherine Katsoyannis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Katherine Katsoyannis's NPI active?: Yes — Katherine Katsoyannis's NPI (1023123015) is active in the NPPES registry as of the last update on 2021-12-18.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309	266	$110
Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308	261	$77
Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308	218	$76
Residence Visit for Established Patient With Low Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99348	138	$77
Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349	126	$129
Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes

Drug

Part D claims (2024)

Beneficiaries

Atorvastatin Calcium

2,830

388

Levothyroxine Sodium

1,782

226

Amlodipine Besylate

1,710

214

Apixabanbrand: Eliquis

1,692

190

Donepezil Hcl

1,240

163

Furosemide

1,228

198

Escitalopram Oxalate

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$273 across 8 records (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments