Johannes Decker, MD
NPI 1558892075 · Diagnostic Neuroimaging (Radiology) Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Johannes Decker, MD is a Diagnostic Neuroimaging (Radiology) Physician provider in Stanford, CA (NPI 1558892075).
Provider details
- NPI number
- 1558892075
- Entity type
- Individual
- Primary specialty
- Diagnostic Neuroimaging (Radiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A157187 (CA)
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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,444 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) |
|---|---|---|
| Ct Scan Head Or Brain Without Contrast70450 | 401 | $44 |
| Mri Scan of Brain Before and After Contrast70553 | 153 | $121 |
| Ct Scan of Upper Spine Without Contrast72125 | 130 | $52 |
| Ct Scan of Blood Vessels of Neck With Contrast70498 | 85 | $88 |
| Ct Scan of Blood Vessels of Head With Contrast70496 | 77 | $92 |
| Mri Scan of Blood Vessels of Head Without Contrast70544 | 71 | $64 |
Practice location
Mailing address
Additional practice locations (2)
- 453 Quarry RdPalo Alto, CA 94304-1419Phone: (650) 725-6344
- 751 S Bascom AveSan Jose, CA 95128-2604Phone: (408) 885-5000
Registry dates
- Enumerated
- 2017-03-26
- Last updated
- 2024-04-09
- Certified
- 2024-04-09
Frequently asked questions
- What is Johannes Decker's NPI number?
- Johannes Decker's National Provider Identifier (NPI) is 1558892075, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Johannes Decker's specialty?
- Johannes Decker is listed in the NPPES registry with a primary specialty of Diagnostic Neuroimaging (Radiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Johannes Decker located?
- Johannes Decker's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Johannes Decker's phone number?
- The practice phone number listed in the NPPES registry for Johannes Decker is (650) 723-4000.
- Does Johannes Decker accept Medicare?
- Johannes Decker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Johannes Decker's NPI active?
- Yes — Johannes Decker's NPI (1558892075) is active in the NPPES registry as of the last update on 2024-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.