Oana Nisipeanu, M.D.
NPI 1558316117 · Family Medicine Physician · Gurnee, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oana Nisipeanu, M.D. is a Family Medicine Physician provider in Gurnee, IL (NPI 1558316117).
Provider details
- NPI number
- 1558316117
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 036-107936 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,156 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 .
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 | 388 | $123 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 328 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 136 | $133 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 98 | $90 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 79 | $141 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 125 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 443 | 137 |
| Losartan Potassium | 354 | 113 |
| Amlodipine Besylate | 333 | 102 |
| Metformin Hcl | 324 | 96 |
| Rosuvastatin Calcium | 255 | 87 |
| Levothyroxine Sodium | 223 | 55 |
| Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$145 across 2 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.
Practice location
Mailing address
Additional practice locations (1)
- 150 W Half Day RdBuffalo Grove, IL 60089-6591Phone: (847) 872-1918Fax: (847) 872-0384
Registry dates
- Enumerated
- 2006-05-23
- Last updated
- 2023-05-25
- Certified
- 2023-05-25
Frequently asked questions
- What is Oana Nisipeanu's NPI number?
- Oana Nisipeanu's National Provider Identifier (NPI) is 1558316117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oana Nisipeanu's specialty?
- Oana Nisipeanu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Oana Nisipeanu located?
- Oana Nisipeanu's practice location on file with NPPES is 1445 N Hunt Club Rd Ste 304, Gurnee, IL 60031-2603.
- What is Oana Nisipeanu's phone number?
- The practice phone number listed in the NPPES registry for Oana Nisipeanu is (847) 855-0100.
- Does Oana Nisipeanu accept Medicare?
- Oana Nisipeanu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Oana Nisipeanu's NPI active?
- Yes — Oana Nisipeanu's NPI (1558316117) is active in the NPPES registry as of the last update on 2023-05-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.