Stephanie Jun, M.D.
NPI 1689704678 · Diagnostic Radiology Physician · Mountain View, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Jun, M.D. is a Diagnostic Radiology Physician provider in Mountain View, CA (NPI 1689704678).
Provider details
- NPI number
- 1689704678
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A78912 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
2,754 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) |
|---|---|---|
| X-Ray of Chest, 2 Views71046 | 402 | $44 |
| X-Ray of Knee, 1-2 Views73560 | 158 | $46 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 143 | $52 |
| Ct Scan of Chest Without Contrast71250 | 110 | $173 |
| Limited Ultrasound Scan of Abdomen76705 | 107 | $114 |
| X-Ray of Both Knees While Standing73565 | 98 | $54 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-07
- Last updated
- 2011-12-07
Frequently asked questions
- What is Stephanie Jun's NPI number?
- Stephanie Jun's National Provider Identifier (NPI) is 1689704678, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Jun's specialty?
- Stephanie Jun is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephanie Jun located?
- Stephanie Jun's practice location on file with NPPES is 701 E El Camino Real, Mountain View, CA 94040-2833.
- What is Stephanie Jun's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Jun is (650) 934-7700.
- Does Stephanie Jun accept Medicare?
- Stephanie Jun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Jun's NPI active?
- Yes — Stephanie Jun's NPI (1689704678) is active in the NPPES registry as of the last update on 2011-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.