Jose Alberto Villarreal Castellanos, MD
NPI 1851288559 · Internal Medicine Physician · Berwyn, IL
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jose Alberto Villarreal Castellanos, MD is a Internal Medicine Physician provider in Berwyn, IL (NPI 1851288559).
Provider details
- NPI number
- 1851288559
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 125.086918 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-06-24
- Last updated
- 2025-06-24
- Certified
- 2025-06-23
Frequently asked questions
- What is Jose Alberto Villarreal Castellanos's NPI number?
- Jose Alberto Villarreal Castellanos's National Provider Identifier (NPI) is 1851288559, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jose Alberto Villarreal Castellanos's specialty?
- Jose Alberto Villarreal Castellanos is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jose Alberto Villarreal Castellanos located?
- Jose Alberto Villarreal Castellanos's practice location on file with NPPES is 3249 Oak Park Ave, Berwyn, IL 60402-3429.
- What is Jose Alberto Villarreal Castellanos's phone number?
- The practice phone number listed in the NPPES registry for Jose Alberto Villarreal Castellanos is (708) 783-9100.
- Does Jose Alberto Villarreal Castellanos accept Medicare?
- Jose Alberto Villarreal Castellanos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jose Alberto Villarreal Castellanos's NPI active?
- Yes — Jose Alberto Villarreal Castellanos's NPI (1851288559) is active in the NPPES registry as of the last update on 2025-06-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.