Alexandra Gersing, MD
NPI 1578386967 · Diagnostic Radiology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alexandra Gersing, MD is a Diagnostic Radiology Physician provider in San Francisco, CA (NPI 1578386967).
Provider details
- NPI number
- 1578386967
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- SPI854 (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
1 yr in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
524 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 Shoulder, Minimum of 2 Views73030 | 53 | $12 |
| X-Ray of Knee, 4 Or More Views73564 | 47 | $18 |
| X-Ray of Foot, Minimum of 3 Views73630 | 36 | $9 |
| X-Ray of Hip, 2-3 Views73502 | 34 | $20 |
| X-Ray of Knee, 3 Views73562 | 30 | $15 |
| X-Ray of Knee, 3 Views73562 | 25 | $10 |
| X-Ray of Foot, Minimum of 3 Views73630 | 24 |
Practice location
Mailing address
Additional practice locations (1)
- 1500 Owens StSan Francisco, CA 94158-2334Phone: (415) 353-1457
Registry dates
- Enumerated
- 2024-11-04
- Last updated
- 2026-02-12
- Certified
- 2026-02-12
Frequently asked questions
- What is Alexandra Gersing's NPI number?
- Alexandra Gersing's National Provider Identifier (NPI) is 1578386967, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexandra Gersing's specialty?
- Alexandra Gersing is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Alexandra Gersing located?
- Alexandra Gersing's practice location on file with NPPES is 400 Parnassus Ave, San Francisco, CA 94143-2202.
- What is Alexandra Gersing's phone number?
- The practice phone number listed in the NPPES registry for Alexandra Gersing is (415) 353-1457.
- Does Alexandra Gersing accept Medicare?
- Alexandra Gersing is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alexandra Gersing's NPI active?
- Yes — Alexandra Gersing's NPI (1578386967) is active in the NPPES registry as of the last update on 2026-02-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.