Derek Diffendaffer, M.D.
NPI 1558629113 · Diagnostic Radiology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Diffendaffer, M.D. is a Diagnostic Radiology Physician provider in Houston, TX (NPI 1558629113).
Provider details
- NPI number
- 1558629113
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- R9206 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
14 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,811 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Screening 3d Breast Mammography77063 | 254 | $26 |
| Screening Mammography77067 | 253 | $34 |
| Mri Scan of Lower Spinal Canal Without Contrast72148 | 118 | $66 |
| X-Ray of Chest, 2 Views71046 | 112 | $10 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 106 | $27 |
| X-Ray of Chest, 1 View71045 | 94 | $8 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-01
- Last updated
- 2018-12-21
Frequently asked questions
- What is Derek Diffendaffer's NPI number?
- Derek Diffendaffer's National Provider Identifier (NPI) is 1558629113, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Diffendaffer's specialty?
- Derek Diffendaffer is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Diffendaffer located?
- Derek Diffendaffer's practice location on file with NPPES is 7600 W Tidwell Rd Ste 103, Houston, TX 77040-5719.
- What is Derek Diffendaffer's phone number?
- The practice phone number listed in the NPPES registry for Derek Diffendaffer is (713) 461-3573.
- Does Derek Diffendaffer accept Medicare?
- Derek Diffendaffer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Diffendaffer's NPI active?
- Yes — Derek Diffendaffer's NPI (1558629113) is active in the NPPES registry as of the last update on 2018-12-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.