Ziwen Guo, M.D.
NPI 1962449108 · Anatomic Pathology & Clinical Pathology Physician · Green Bay, WI
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ziwen Guo, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Green Bay, WI (NPI 1962449108).
Provider details
- NPI number
- 1962449108
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 41382-20 (WI)
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
20 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
1,798 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) |
|---|---|---|
| Special Stained Specimen Slides to Examine Tissue, Each Additional Procedure88341 | 818 | $26 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 433 | $35 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 173 | $32 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 66 | $76 |
| Special Stained Specimen Slides to Examine Tissue Including Interpretation and Report88313 | 45 | $11 |
| Evaluation of Fine Needle Aspirate With Interpretation and Report88173 | 37 | $65 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-31
- Last updated
- 2007-07-09
Frequently asked questions
- What is Ziwen Guo's NPI number?
- Ziwen Guo's National Provider Identifier (NPI) is 1962449108, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ziwen Guo's specialty?
- Ziwen Guo is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Ziwen Guo located?
- Ziwen Guo's practice location on file with NPPES is 744 S Webster Ave, Green Bay, WI 54301-3505.
- What is Ziwen Guo's phone number?
- The practice phone number listed in the NPPES registry for Ziwen Guo is (920) 433-3653.
- Does Ziwen Guo accept Medicare?
- Ziwen Guo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ziwen Guo's NPI active?
- Yes — Ziwen Guo's NPI (1962449108) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.