Maria Granadillo Castellon, MD
NPI 1265068159 · Family Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Granadillo Castellon, MD is a Family Medicine Physician provider in Chicago, IL (NPI 1265068159).
Provider details
- NPI number
- 1265068159
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 125.075790 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 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
62 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) |
|---|---|---|
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus87426 | 14 | $35 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 13 | $94 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 12 | $119 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 12 | $60 |
| New Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 15 Minutes Or More99202 | 11 | $76 |
Typical Medicare-allowed amounts for these services range $35–$119 (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 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 51 | 50 |
| Azelastine Hcl | 34 | 34 |
| Prednisone | 27 | 26 |
| Diclofenac Sodium | 18 | 18 |
| Fluticasone Propionate | 17 | 17 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 16 | 15 |
| Ciprofloxacin Hcl | 15 | 14 |
| Meloxicam |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-23
- Last updated
- 2023-07-20
- Certified
- 2023-07-20
Frequently asked questions
- What is Maria Granadillo Castellon's NPI number?
- Maria Granadillo Castellon's National Provider Identifier (NPI) is 1265068159, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Granadillo Castellon's specialty?
- Maria Granadillo Castellon is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Granadillo Castellon located?
- Maria Granadillo Castellon's practice location on file with NPPES is 251 E Huron St, Chicago, IL 60611-2908.
- What is Maria Granadillo Castellon's phone number?
- The practice phone number listed in the NPPES registry for Maria Granadillo Castellon is (312) 666-3494.
- Does Maria Granadillo Castellon accept Medicare?
- Maria Granadillo Castellon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Granadillo Castellon's NPI active?
- Yes — Maria Granadillo Castellon's NPI (1265068159) is active in the NPPES registry as of the last update on 2023-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.