Ronald Guiao, MD
NPI 1952353328 · Orthopaedic Surgery Physician · Madison, WI
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Guiao, MD is a Orthopaedic Surgery Physician provider in Madison, WI (NPI 1952353328).
Provider details
- NPI number
- 1952353328
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 44318 (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
174 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 60 | $61 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 45 | $85 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 31 | $75 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 14 | $53 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 12 | $104 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-16
- Last updated
- 2021-01-26
- Certified
- 2021-01-26
Frequently asked questions
- What is Ronald Guiao's NPI number?
- Ronald Guiao's National Provider Identifier (NPI) is 1952353328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Guiao's specialty?
- Ronald Guiao is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Guiao located?
- Ronald Guiao's practice location on file with NPPES is 600 Highland Ave., Madison, WI 53792.
- What is Ronald Guiao's phone number?
- The practice phone number listed in the NPPES registry for Ronald Guiao is (608) 287-2700.
- Does Ronald Guiao accept Medicare?
- Ronald Guiao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Guiao's NPI active?
- Yes — Ronald Guiao's NPI (1952353328) is active in the NPPES registry as of the last update on 2021-01-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.