NPPES file of Aug 9, 2026

Rafael Felipe Diaz Flores, M.D.

Surgery Physician · Walnut Creek, CA

Rafael Felipe Diaz Flores, M.D. is a surgery physician with a practice address in Walnut Creek, California, and NPI 1619056561, issued on Nov 3, 2006. Check the license (California C156787, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1619056561
Name
Rafael Felipe Diaz Flores
Credential
M.D.
Primary taxonomy
Surgery Physician 208600000X
License numbers
C156787 CA
229206 MA
M2013-0263 NM
P1065 TX
Self-reported in NPPES; status is on the state search
Practice location
2637 Shadelands Dr, Walnut Creek, CA 94598
Phone
(925) 658-3731
Enumerated
Nov 3, 2006
Record last updated
Jan 3, 2025
Medicare enrollment
Enrolled (PECOS I20181114001809); may accept Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2637 Shadelands Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Anita Anand, NPFamily Nurse Practitioner1023993102
  2. Stacyann Andaya, NPFamily Nurse Practitioner1649893660
  3. Audrey Arzamendi, M.D.Endocrinology, Diabetes & Metabolism Physician1508159567
  4. Anthony Bernens, MDInternal Medicine Physician1215983440
  5. Jennifer Chan, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1265634687
  6. Heidi Chang, MDObstetrics & Gynecology Physician1649681982

Verify Rafael Felipe Diaz Flores in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C156787
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The practice group's MIPS final score for 2023 (Medicare payment program): 80.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score72.9
  2. Costout of 100 · 30%55.1
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through 2 group practices

  1. Bass Medical GroupAlamo, CA
  2. John Muir Trauma Physicians Billing ServiceWalnut Creek, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Rafael Felipe Diaz Flores among 3,118 surgery physician records in California

Rafael Felipe Diaz Flores, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 55% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated2003 · median 2003 among the 1,901 with a school on file
  • Record last updated2025 · 59% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Surgery Physician providers in California

There are 3,118 surgery physician records in California.

The 8 surgery physician records with the nearest ZIP codes

  1. Michael Baker, M.D.Walnut Creek, CA 945981043309008
  2. Danielle Bertoni, MDWalnut Creek, CA 945981780843185
  3. Brian Chin, MDWalnut Creek, CA 945981750347100
  4. Michael Deboisblanc, MDWalnut Creek, CA 945981467554337
  5. Deborah Kerlin, M.D., F.A.C.S.Walnut Creek, CA 945981568523892
  6. Charleen Kim, M.D.Walnut Creek, CA 945981831378850
  7. Sean Martin, M.D.Walnut Creek, CA 945981376612275
  8. Peter Mazolewski, M.D.Walnut Creek, CA 945981710076773

Common questions

What is Rafael Felipe Diaz Flores, M.D.'s NPI number?

Rafael Felipe Diaz Flores, M.D.'s National Provider Identifier (NPI) is 1619056561, issued on Nov 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Rafael Felipe Diaz Flores, M.D. located?

The NPPES record lists a practice address at 2637 Shadelands Dr, Walnut Creek, CA, 94598. Phone: (925) 658-3731. Providers update this record themselves, so call before visiting.

How can I verify Rafael Felipe Diaz Flores, M.D.'s license?

NPPES lists California license number C156787, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Rafael Felipe Diaz Flores, M.D.'s MIPS final score?

The 2023 MIPS final score is 80.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.