What is Tiffany Karas's NPI number?

Tiffany Karas's National Provider Identifier (NPI) is 1013993336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Tiffany Karas's specialty?

Tiffany Karas is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).

Where is Tiffany Karas located?

Tiffany Karas's practice location on file with NPPES is 302 Randall Rd, Geneva, IL 60134-4209.

What is Tiffany Karas's phone number?

The practice phone number listed in the NPPES registry for Tiffany Karas is (630) 208-6775.

Does Tiffany Karas accept Medicare?

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

Is Tiffany Karas's NPI active?

Yes — Tiffany Karas's NPI (1013993336) is active in the NPPES registry as of the last update on 2013-04-09.

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Tiffany Karas, MD

NPI 1013993336 · Endocrinology, Diabetes & Metabolism Physician · Geneva, IL

Tiffany Karas, MD is a Endocrinology, Diabetes & Metabolism Physician provider in Geneva, IL (NPI 1013993336).

Provider details

NPI number: 1013993336
Entity type: Individual
Primary specialty: Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No
License: 036-109127 (IL)

Practice location

302 Randall Rd

Geneva, IL 60134-4209

Phone: (630) 208-6775

Fax: (630) 208-7937

Street-level locationGet directions

More IL providers

Mailing address

302 Randall Rd

Geneva, IL 60134-4209

Specialties & taxonomies

Endocrinology, Diabetes & Metabolism PhysicianPrimary207RE0101XLicense 036-109127 (IL)
Allopathic & Osteopathic Physicians

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

Profile Score

Detailed profile(82/100 index)

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

Registry tenure28% of score
20 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
1,574 Medicare services, 2024 (ranked within specialty)

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)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	486	$135
Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211	384	$17
Hemoglobin A1c Level83036	329	$10
Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251	219	$36
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	71	$96
Injection of Drug Or Substance Under Skin Or Into Muscle

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Levothyroxine Sodium	596	150
Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar	292	82
Levothyroxine Sodiumbrand: Synthroid	248	61
Semaglutidebrand: Ozempic	244	56
Empagliflozinbrand: Jardiance	199	49
Metformin Hcl	177

Enumerated: 2005-12-19
Last updated: 2013-04-09

Frequently asked questions

What is Tiffany Karas's NPI number?: Tiffany Karas's National Provider Identifier (NPI) is 1013993336, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Tiffany Karas's specialty?: Tiffany Karas is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
Where is Tiffany Karas located?: Tiffany Karas's practice location on file with NPPES is 302 Randall Rd, Geneva, IL 60134-4209.
What is Tiffany Karas's phone number?: The practice phone number listed in the NPPES registry for Tiffany Karas is (630) 208-6775.
Does Tiffany Karas accept Medicare?: Tiffany Karas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Tiffany Karas's NPI active?: Yes — Tiffany Karas's NPI (1013993336) is active in the NPPES registry as of the last update on 2013-04-09.

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)
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	486	$135
Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211	384	$17
Hemoglobin A1c Level83036	329	$10
Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Interpretation and Report95251	219	$36
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	71	$96
Injection of Drug Or Substance Under Skin Or Into Muscle

What this provider prescribes (Medicare Part D)

Top drugs by Medicare Part D claim volume, 2024 · 56 distinct drugs on file.

Drug	Part D claims (2024)	Beneficiaries
Levothyroxine Sodium	596	150
Insulin Glargine,hum.rec.anlogbrand: Lantus Solostar	292	82
Levothyroxine Sodiumbrand: Synthroid	248	61
Semaglutidebrand: Ozempic	244	56
Empagliflozinbrand: Jardiance	199	49
Metformin Hcl	177

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)