Wilfor Diaz Fernandez, M.C.
NPI 1134611817 · Gastroenterology Physician · Rochester, MN
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wilfor Diaz Fernandez, M.C. is a Gastroenterology Physician provider in Rochester, MN (NPI 1134611817).
Provider details
- NPI number
- 1134611817
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.C.
- Sex
- Male
- Sole proprietor
- No
- License
- 79901 (MN)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
326 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 257 | $181 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 36 | $121 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 17 | $116 |
| Critical Care, First 30-74 Minutes99291 | 16 | $220 |
Typical Medicare-allowed amounts for these services range $116–$220 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (1)
- 621 S New Ballas RdSaint Louis, MO 63141-8232Phone: (314) 509-5305Fax: (314) 251-4454
Registry dates
- Enumerated
- 2018-05-30
- Last updated
- 2025-06-18
- Certified
- 2025-06-18
Frequently asked questions
- What is Wilfor Diaz Fernandez's NPI number?
- Wilfor Diaz Fernandez's National Provider Identifier (NPI) is 1134611817, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wilfor Diaz Fernandez's specialty?
- Wilfor Diaz Fernandez is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Wilfor Diaz Fernandez located?
- Wilfor Diaz Fernandez's practice location on file with NPPES is 200 1st St Sw, Rochester, MN 55905-0001.
- What is Wilfor Diaz Fernandez's phone number?
- The practice phone number listed in the NPPES registry for Wilfor Diaz Fernandez is (507) 284-2511.
- Does Wilfor Diaz Fernandez accept Medicare?
- Wilfor Diaz Fernandez is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wilfor Diaz Fernandez's NPI active?
- Yes — Wilfor Diaz Fernandez's NPI (1134611817) is active in the NPPES registry as of the last update on 2025-06-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.