Kwun Wen, M.D.
NPI 1326307430 · Clinical Pathology/Laboratory Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kwun Wen, M.D. is a Clinical Pathology/Laboratory Medicine Physician provider in San Francisco, CA (NPI 1326307430).
Provider details
- NPI number
- 1326307430
- Entity type
- Individual
- Primary specialty
- Clinical Pathology/Laboratory Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MT201112 (PA)
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 tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,827 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 | 1,090 | $42 |
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 327 | $31 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 158 | $39 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 69 | $92 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 58 | $13 |
| Pathology Examination of Tissue Using a Microscope, Moderately Low Complexity88304 | 35 | $13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$138 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2012-05-09
- Last updated
- 2021-05-19
- Certified
- 2021-05-19
Frequently asked questions
- What is Kwun Wen's NPI number?
- Kwun Wen's National Provider Identifier (NPI) is 1326307430, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kwun Wen's specialty?
- Kwun Wen is listed in the NPPES registry with a primary specialty of Clinical Pathology/Laboratory Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kwun Wen located?
- Kwun Wen's practice location on file with NPPES is 505 Parnassus Ave, San Francisco, CA 94143-2204.
- What is Kwun Wen's phone number?
- The practice phone number listed in the NPPES registry for Kwun Wen is (215) 662-2200.
- Does Kwun Wen accept Medicare?
- Kwun Wen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kwun Wen's NPI active?
- Yes — Kwun Wen's NPI (1326307430) is active in the NPPES registry as of the last update on 2021-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.