John Hagen, MD
NPI 1821747700 · Student in an Organized Health Care Education/Training Program · Houston, TX
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hagen, MD is a Student in an Organized Health Care Education/Training Program provider in Houston, TX (NPI 1821747700).
Provider details
- NPI number
- 1821747700
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2022-03-20
- Last updated
- 2023-05-01
- Certified
- 2023-05-01
Frequently asked questions
- What is John Hagen's NPI number?
- John Hagen's National Provider Identifier (NPI) is 1821747700, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hagen's specialty?
- John Hagen is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is John Hagen located?
- John Hagen's practice location on file with NPPES is 1 Baylor Plz, Houston, TX 77030-3498.
- What is John Hagen's phone number?
- The practice phone number listed in the NPPES registry for John Hagen is (713) 798-6362.
- Does John Hagen accept Medicare?
- John Hagen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hagen's NPI active?
- Yes — John Hagen's NPI (1821747700) is active in the NPPES registry as of the last update on 2023-05-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.