Frederick Wu, MD
NPI 1558578195 · Internal Medicine Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Frederick Wu, MD is a Internal Medicine Physician provider in San Diego, CA (NPI 1558578195).
Provider details
- NPI number
- 1558578195
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A93500 (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
319 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 64 | $120 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 58 | $80 |
| X-Ray of Ankle, Minimum of 3 Views73610 | 54 | $33 |
| X-Ray of Hip, 2-3 Views73502 | 36 | $43 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 35 | $118 |
| X-Ray of Hand, Minimum of 3 Views73130 | 29 | $34 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-05-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Frederick Wu's NPI number?
- Frederick Wu's National Provider Identifier (NPI) is 1558578195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Frederick Wu's specialty?
- Frederick Wu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Frederick Wu located?
- Frederick Wu's practice location on file with NPPES is 501 Washington St, San Diego, CA 92103-2231.
- What is Frederick Wu's phone number?
- The practice phone number listed in the NPPES registry for Frederick Wu is (619) 278-3300.
- Does Frederick Wu accept Medicare?
- Frederick Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Frederick Wu's NPI active?
- Yes — Frederick Wu's NPI (1558578195) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.