Charles Guo, M.D.
NPI 1558399683 · Anatomic Pathology & Clinical Pathology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Guo, M.D. is a Anatomic Pathology & Clinical Pathology Physician provider in Houston, TX (NPI 1558399683).
Provider details
- NPI number
- 1558399683
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology & Clinical Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M6161 (TX)
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
1,028 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 | 265 | $27 |
| Surgical Pathology Consultation and Report on Referred Slides Prepared Elsewhere88321 | 236 | $80 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 202 | $36 |
| Pathology Examination of Tissue Using a Microscope, Moderately High Complexity88307 | 111 | $79 |
| Special Stained Specimen Slides to Examine Tissue, Initial Procedure88342 | 73 | $33 |
| Surgical Pathology, Gross and Microscopic Examinations, for Prostate Needle Biopsy, Any MethodG0416 | 68 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-29
- Last updated
- 2020-01-07
- Certified
- 2020-01-07
Frequently asked questions
- What is Charles Guo's NPI number?
- Charles Guo's National Provider Identifier (NPI) is 1558399683, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Guo's specialty?
- Charles Guo is listed in the NPPES registry with a primary specialty of Anatomic Pathology & Clinical Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Guo located?
- Charles Guo's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4000.
- What is Charles Guo's phone number?
- The practice phone number listed in the NPPES registry for Charles Guo is (713) 792-6161.
- Does Charles Guo accept Medicare?
- Charles Guo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Guo's NPI active?
- Yes — Charles Guo's NPI (1558399683) is active in the NPPES registry as of the last update on 2020-01-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.