Michael Castellarin, MD
NPI 1467807610 · Hospitalist Physician · Aurora, CO
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael Castellarin, MD is a Hospitalist Physician provider in Aurora, CO (NPI 1467807610).
Provider details
- NPI number
- 1467807610
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- DR.0066634 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES 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
- 2016-04-25
- Last updated
- 2021-08-14
- Certified
- 2021-06-07
Frequently asked questions
- What is Michael Castellarin's NPI number?
- Michael Castellarin's National Provider Identifier (NPI) is 1467807610, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael Castellarin's specialty?
- Michael Castellarin is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Michael Castellarin located?
- Michael Castellarin's practice location on file with NPPES is 12605 E 16th Ave, Aurora, CO 80045-2545.
- What is Michael Castellarin's phone number?
- The practice phone number listed in the NPPES registry for Michael Castellarin is (720) 848-0000.
- Does Michael Castellarin accept Medicare?
- Michael Castellarin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael Castellarin's NPI active?
- Yes — Michael Castellarin's NPI (1467807610) is active in the NPPES registry as of the last update on 2021-08-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.