John Diehl, MD, PHD
NPI 1194428177 · Student in an Organized Health Care Education/Training Program · Philadelphia, PA
John Diehl, MD, PHD is a Student in an Organized Health Care Education/Training Program provider in Philadelphia, PA (NPI 1194428177).
Provider details
- NPI number
- 1194428177
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD, PHD
- 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
3 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
- 2023-03-27
- Last updated
- 2023-03-27
- Certified
- 2023-03-27
Frequently asked questions
- What is John Diehl's NPI number?
- John Diehl's National Provider Identifier (NPI) is 1194428177, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Diehl's specialty?
- John Diehl 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 Diehl located?
- John Diehl's practice location on file with NPPES is 3400 Spruce St, Philadelphia, PA 19104-4238.
- What is John Diehl's phone number?
- The practice phone number listed in the NPPES registry for John Diehl is (610) 955-8796.
- Is John Diehl's NPI active?
- Yes — John Diehl's NPI (1194428177) is active in the NPPES registry as of the last update on 2023-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.