William Otero, M.D.
NPI 1588776884 · Family Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Otero, M.D. is a Family Medicine Physician provider in Chicago, IL (NPI 1588776884).
Provider details
- NPI number
- 1588776884
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036 102552 (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
281 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 113 | $90 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 65 | $9 |
| Blood Glucose (sugar) Test Performed By Hand-Held Instrument82962 | 42 | $3 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 31 | $127 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 16 | $126 |
| Administration of Influenza Virus VaccineG0008 | 14 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 80 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metformin Hcl | 225 | 77 |
| Atorvastatin Calcium | 186 | 64 |
| Simvastatin | 158 | 51 |
| Rosuvastatin Calcium | 153 | 60 |
| Metoprolol Succinate | 137 | 47 |
| Lisinopril | 131 | 42 |
| Losartan Potassium | 120 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$340 across 10 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
- 2006-08-31
- Last updated
- 2019-03-18
Frequently asked questions
- What is William Otero's NPI number?
- William Otero's National Provider Identifier (NPI) is 1588776884, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Otero's specialty?
- William Otero is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Otero located?
- William Otero's practice location on file with NPPES is 2363 N California Ave, Chicago, IL 60647-2939.
- What is William Otero's phone number?
- The practice phone number listed in the NPPES registry for William Otero is (773) 772-4900.
- Does William Otero accept Medicare?
- William Otero is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Otero's NPI active?
- Yes — William Otero's NPI (1588776884) is active in the NPPES registry as of the last update on 2019-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.