Gilberto Zavala, MD
NPI 1699700872 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gilberto Zavala, MD is a Internal Medicine Physician provider in Chicago, IL (NPI 1699700872).
Provider details
- NPI number
- 1699700872
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036103577 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
503 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 140 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 130 | $130 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 95 | $15 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 75 | $187 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 63 | $230 |
Typical Medicare-allowed amounts for these services range $9–$230 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 46 | 14 |
| Alprazolam | 44 | — |
| Metformin Hcl | 32 | — |
| Amlodipine Besylate | 31 | — |
| Hydrochlorothiazide | 31 | — |
| Levothyroxine Sodium | 31 | — |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$253 across 11 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
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2020-05-08
- Certified
- 2020-05-08
Frequently asked questions
- What is Gilberto Zavala's NPI number?
- Gilberto Zavala's National Provider Identifier (NPI) is 1699700872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gilberto Zavala's specialty?
- Gilberto Zavala is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gilberto Zavala located?
- Gilberto Zavala's practice location on file with NPPES is 1725 W Harrison St, Chicago, IL 60612.
- What is Gilberto Zavala's phone number?
- The practice phone number listed in the NPPES registry for Gilberto Zavala is (312) 942-6647.
- Does Gilberto Zavala accept Medicare?
- Gilberto Zavala is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gilberto Zavala's NPI active?
- Yes — Gilberto Zavala's NPI (1699700872) is active in the NPPES registry as of the last update on 2020-05-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.