Richard Diehl, M.D.
NPI 1417943127 · Orthopaedic Surgery Physician · Pasadena, CA
Richard Diehl, M.D. is a Orthopaedic Surgery Physician provider in Pasadena, CA (NPI 1417943127).
Provider details
- NPI number
- 1417943127
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G15733 (CA)
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
20 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
- 2005-09-27
- Last updated
- 2009-01-26
Frequently asked questions
- What is Richard Diehl's NPI number?
- Richard Diehl's National Provider Identifier (NPI) is 1417943127, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Diehl's specialty?
- Richard Diehl is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Diehl located?
- Richard Diehl's practice location on file with NPPES is 800 S Raymond Ave, Pasadena, CA 91105-3229.
- What is Richard Diehl's phone number?
- The practice phone number listed in the NPPES registry for Richard Diehl is (626) 795-8051.
- Is Richard Diehl's NPI active?
- Yes — Richard Diehl's NPI (1417943127) is active in the NPPES registry as of the last update on 2009-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.