Geraldine Delos Santos, D.O.
NPI 1942658380 · Family Medicine Physician · Sycamore, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Geraldine Delos Santos, D.O. is a Family Medicine Physician provider in Sycamore, IL (NPI 1942658380).
Provider details
- NPI number
- 1942658380
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 036149569 (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
10 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
743 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 244 | $124 |
| 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 | 73 | $16 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 64 | $88 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 55 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 55 | $127 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 182 | 91 |
| Atorvastatin Calcium | 179 | 88 |
| Amlodipine Besylate | 158 | 76 |
| Metoprolol Succinate | 127 | 59 |
| Lisinopril | 94 | 49 |
| Rosuvastatin Calcium | 91 | 45 |
| Simvastatin |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-26
- Last updated
- 2025-05-15
- Certified
- 2025-05-15
Frequently asked questions
- What is Geraldine Delos Santos's NPI number?
- Geraldine Delos Santos's National Provider Identifier (NPI) is 1942658380, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Geraldine Delos Santos's specialty?
- Geraldine Delos Santos is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Geraldine Delos Santos located?
- Geraldine Delos Santos's practice location on file with NPPES is 1850 Gateway Dr Ste 103, Sycamore, IL 60178-3192.
- What is Geraldine Delos Santos's phone number?
- The practice phone number listed in the NPPES registry for Geraldine Delos Santos is (815) 758-8671.
- Does Geraldine Delos Santos accept Medicare?
- Geraldine Delos Santos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Geraldine Delos Santos's NPI active?
- Yes — Geraldine Delos Santos's NPI (1942658380) is active in the NPPES registry as of the last update on 2025-05-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.