Guadalupe Sitjar, MD
NPI 1497870315 · Internal Medicine Physician · Gurnee, IL
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guadalupe Sitjar, MD is a Internal Medicine Physician provider in Gurnee, IL (NPI 1497870315).
Provider details
- NPI number
- 1497870315
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
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
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,091 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) |
|---|---|---|
| Physician Or Allowed Practitioner Supervision of a Patient Receiving Medicare-Covered Services Provided By a Participating Home Health Agency (patient Not Present) Requiring Complex and Multidisciplinary Care Modalities Involving Regular Physician Or AllowG0181 | 510 | $108 |
| Residence Visit for Established Patient With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99349 | 433 | $131 |
| Advance Care Planning, First 30 Minutes99497 | 246 | $84 |
| Physician Or Allowed Practitioner Re-Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians aG0179 | 229 | $43 |
| Chronic Care Management Services for Two Or More Chronic Conditions, First 30 Minutes Provided Personally By Health Care Professional, Per Calendar Month99491 | 200 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 79 | 28 |
| Amlodipine Besylate | 59 | 20 |
| Furosemide | 56 | 16 |
| Apixabanbrand: Eliquis | 41 | 13 |
| Losartan Potassium | 36 | 16 |
| Carvedilol | 34 | — |
| Gabapentin | 34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-20
- Last updated
- 2007-07-08
Frequently asked questions
- What is Guadalupe Sitjar's NPI number?
- Guadalupe Sitjar's National Provider Identifier (NPI) is 1497870315, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guadalupe Sitjar's specialty?
- Guadalupe Sitjar is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Guadalupe Sitjar located?
- Guadalupe Sitjar's practice location on file with NPPES is 135 North Greenleaf, Gurnee, IL 60031-3371.
- What is Guadalupe Sitjar's phone number?
- The practice phone number listed in the NPPES registry for Guadalupe Sitjar is (847) 336-9159.
- Does Guadalupe Sitjar accept Medicare?
- Guadalupe Sitjar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guadalupe Sitjar's NPI active?
- Yes — Guadalupe Sitjar's NPI (1497870315) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.