Ruth Zhang
NPI 1174028385 · Anatomic Pathology & Clinical Pathology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Zhang is a Anatomic Pathology & Clinical Pathology Physician provider in San Francisco, CA (NPI 1174028385).
Provider details
- NPI number
- 1174028385
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A166268 (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
8 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
2,005 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) |
|---|---|---|
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 856 | $42 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 415 | $32 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 216 | $39 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 115 | $93 |
| Pathology Examination of Tissue Using a Microscope, Limited Examination88300 | 77 | $5 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 70 | $13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-03-28
- Last updated
- 2024-06-14
- Certified
- 2024-06-14
Frequently asked questions
- What is Ruth Zhang's NPI number?
- Ruth Zhang's National Provider Identifier (NPI) is 1174028385, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Zhang's specialty?
- Ruth Zhang is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Zhang located?
- Ruth Zhang's practice location on file with NPPES is 505 Parnassus Avenue, San Francisco, CA 94143-0102.
- What is Ruth Zhang's phone number?
- The practice phone number listed in the NPPES registry for Ruth Zhang is (415) 353-1613.
- Does Ruth Zhang accept Medicare?
- Ruth Zhang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Zhang's NPI active?
- Yes — Ruth Zhang's NPI (1174028385) is active in the NPPES registry as of the last update on 2024-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.