Jean Shlyak, M.D.
NPI 1851457717 · Internal Medicine Physician · Northbrook, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jean Shlyak, M.D. is a Internal Medicine Physician provider in Northbrook, IL (NPI 1851457717).
Provider details
- NPI number
- 1851457717
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036064733 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
2,558 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) |
|---|---|---|
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 413 | $23 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 405 | $130 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 274 | $15 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 227 | $40 |
| Face-To-Face Behavioral Counseling for Obesity, 15 MinutesG0447 | 227 | $26 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 122 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 702 | 90 |
| Amlodipine Besylate | 437 | 85 |
| Omeprazole | 333 | 54 |
| Lorazepam | 275 | 54 |
| Allopurinol | 216 | 39 |
| Propranolol Hcl | 198 | 29 |
| Losartan Potassium | 185 | 34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-28
- Last updated
- 2011-04-06
Frequently asked questions
- What is Jean Shlyak's NPI number?
- Jean Shlyak's National Provider Identifier (NPI) is 1851457717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jean Shlyak's specialty?
- Jean Shlyak is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jean Shlyak located?
- Jean Shlyak's practice location on file with NPPES is 3000 Dundee Rd Ste 215, Northbrook, IL 60062-2432.
- What is Jean Shlyak's phone number?
- The practice phone number listed in the NPPES registry for Jean Shlyak is (847) 390-8550.
- Does Jean Shlyak accept Medicare?
- Jean Shlyak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jean Shlyak's NPI active?
- Yes — Jean Shlyak's NPI (1851457717) is active in the NPPES registry as of the last update on 2011-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.