Rafael Diaz Flores, M.D.
NPI 1619056561 · Surgery Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Rafael Diaz Flores, M.D. is a Surgery Physician provider in Walnut Creek, CA (NPI 1619056561).
Provider details
- NPI number
- 1619056561
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M2013-0263 (NM)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
293 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 115 | $85 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 84 | $189 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 32 | $126 |
| Critical Care, First 30-74 Minutes99291 | 24 | $219 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 21 | $87 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 17 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-03
- Last updated
- 2025-01-03
- Certified
- 2025-01-03
Frequently asked questions
- What is Rafael Diaz Flores's NPI number?
- Rafael Diaz Flores's National Provider Identifier (NPI) is 1619056561, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rafael Diaz Flores's specialty?
- Rafael Diaz Flores is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Rafael Diaz Flores located?
- Rafael Diaz Flores's practice location on file with NPPES is 2637 Shadelands Dr, Walnut Creek, CA 94598-2512.
- What is Rafael Diaz Flores's phone number?
- The practice phone number listed in the NPPES registry for Rafael Diaz Flores is (925) 658-3731.
- Does Rafael Diaz Flores accept Medicare?
- Rafael Diaz Flores is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Rafael Diaz Flores's NPI active?
- Yes — Rafael Diaz Flores's NPI (1619056561) is active in the NPPES registry as of the last update on 2025-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.