Andrew Diederich, MD
NPI 1679788137 · Psychiatry Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Diederich, MD is a Psychiatry Physician provider in Dallas, TX (NPI 1679788137).
Provider details
- NPI number
- 1679788137
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- N6257 (TX)
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
19 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
- 2007-05-10
- Last updated
- 2020-09-15
- Certified
- 2020-09-15
Frequently asked questions
- What is Andrew Diederich's NPI number?
- Andrew Diederich's National Provider Identifier (NPI) is 1679788137, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Diederich's specialty?
- Andrew Diederich is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Diederich located?
- Andrew Diederich's practice location on file with NPPES is 1935 Medical District Dr, Dallas, TX 75235-7701.
- What is Andrew Diederich's phone number?
- The practice phone number listed in the NPPES registry for Andrew Diederich is (214) 456-8899.
- Does Andrew Diederich accept Medicare?
- Andrew Diederich is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Diederich's NPI active?
- Yes — Andrew Diederich's NPI (1679788137) is active in the NPPES registry as of the last update on 2020-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.