Maritza Estrada-O'Brien
NPI 1184187767 · Family Medicine Physician · Mendota, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maritza Estrada-O'Brien is a Family Medicine Physician provider in Mendota, IL (NPI 1184187767).
Provider details
- NPI number
- 1184187767
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- 036.158388 (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
7 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
324 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) |
|---|---|---|
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 162 | $126 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 131 | $76 |
| Critical Care, First 30-74 Minutes99291 | 31 | $207 |
Typical Medicare-allowed amounts for these services range $76–$207 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 131 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 467 | 145 |
| Gabapentin | 274 | 80 |
| Omeprazole | 265 | 75 |
| Levothyroxine Sodium | 251 | 74 |
| Amlodipine Besylate | 223 | 68 |
| Furosemide | 216 | 57 |
| Lisinopril | 215 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-04-10
- Last updated
- 2023-05-10
- Certified
- 2023-05-10
Frequently asked questions
- What is Maritza Estrada-O'Brien's NPI number?
- Maritza Estrada-O'Brien's National Provider Identifier (NPI) is 1184187767, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maritza Estrada-O'Brien's specialty?
- Maritza Estrada-O'Brien is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maritza Estrada-O'Brien located?
- Maritza Estrada-O'Brien's practice location on file with NPPES is 1405 E 12th St Ste 600, Mendota, IL 61342-9012.
- What is Maritza Estrada-O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Maritza Estrada-O'Brien is (815) 538-7200.
- Does Maritza Estrada-O'Brien accept Medicare?
- Maritza Estrada-O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maritza Estrada-O'Brien's NPI active?
- Yes — Maritza Estrada-O'Brien's NPI (1184187767) is active in the NPPES registry as of the last update on 2023-05-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.