Gigi Ip, MD
NPI 1376519777 · Internal Medicine Physician · Downers Grove, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gigi Ip, MD is a Internal Medicine Physician provider in Downers Grove, IL (NPI 1376519777).
Provider details
- NPI number
- 1376519777
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 036100745 (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
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
1,045 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 134 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 104 | $129 |
| Blood Test, Clotting Time85610 | 101 | $4 |
| 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 | 72 | $17 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 69 | $13 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 111 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 454 | 139 |
| Rosuvastatin Calcium | 427 | 126 |
| Levothyroxine Sodium | 384 | 111 |
| Amlodipine Besylate | 345 | 99 |
| Losartan Potassium | 257 | 75 |
| Metformin Hcl | 230 | 70 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-24
- Last updated
- 2023-08-08
- Certified
- 2023-08-08
Frequently asked questions
- What is Gigi Ip's NPI number?
- Gigi Ip's National Provider Identifier (NPI) is 1376519777, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gigi Ip's specialty?
- Gigi Ip is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gigi Ip located?
- Gigi Ip's practice location on file with NPPES is 5207 Main St, Downers Grove, IL 60515-4652.
- What is Gigi Ip's phone number?
- The practice phone number listed in the NPPES registry for Gigi Ip is (630) 435-9888.
- Does Gigi Ip accept Medicare?
- Gigi Ip is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gigi Ip's NPI active?
- Yes — Gigi Ip's NPI (1376519777) is active in the NPPES registry as of the last update on 2023-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.