NPPES file of Aug 9, 2026

Christopher M. Krol, MD

Diagnostic Radiology Physician · Walnut Creek, CA

Christopher M. Krol, MD is a diagnostic radiology physician with a practice address in Walnut Creek, California, and NPI 1114905007, issued on Jan 3, 2006. Check the license (California C171861, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1114905007
Name
Christopher M. Krol
Credential
MD
Primary taxonomy
Diagnostic Radiology Physician 2085R0202X
License numbers
C171861 CA
12343 ID
4301503494 MI
MD00043543 WA
Self-reported in NPPES; status is on the state search
Practice location
2401 Shadelanders Drive, Walnut Creek, CA 94598
Phone
(510) 425-3000
Enumerated
Jan 3, 2006
Record last updated
Feb 23, 2026
Fax
(425) 563-1374
Medicaid IDs
8397887 WA
1114905007 ID
Medicare enrollment
Enrolled (PECOS I20040623000567); accepts 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 2401 Shadelanders Drive

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

  1. Brendan McCullough, MDDiagnostic Radiology Physician1497954317

Verify Christopher M. Krol in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license C171861    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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Bills Medicare through 16+ group practices

  1. Central Washington Health Services AssociationWenatchee, WA
  2. County OF Santa ClaraSan Jose, CA
  3. Evergreen Radia LLCKirkland, WA
  4. Medford Radiological Group PCClyde Hill, WA
  5. Okanogan County Public Hospital Dist NO 4Tonasket, WA
  6. Okanogan County Public Hospital District NO. 3Omak, WA
  7. Optum Care Washington PLLCEverett, WA
  8. Public Hospital District NO 4 King County WashingtonSnoqualmie, WA
  9. Radia California Radiology Medical Group IncClyde Hill, WA
  10. Radia Inc P SCoupeville, WA
  11. Radia Oregon Radiology Medical Group LLCClyde Hill, WA
  12. Radiology Associates PAEdmonds, WA
  13. South Sound Radiologists Inc P SOlympia, WA
  14. Swedish Health ServicesRedmond, WA
  15. Swedish Radia Imaging Center AT Edmonds LLCEdmonds, WA
  16. Tower Imaging Medical Associates IncClyde Hill, WA

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

98 diagnostic radiology physician records list a practice address in Walnut Creek

They are 98 of the 6,170 NPPES records with a practice address in Walnut Creek, and 4,500 diagnostic radiology physician records in California.

All 98 in Walnut Creek → All 4,500 in California → Every provider in Walnut Creek →

Other diagnostic radiology physician records in California

  1. Jason Aaronson, MDLos Angeles, CA1023145463
  2. Brianna Abadie, M.D.Van Nuys, CA1861811291
  3. Kenric Aban, M.D.Oceanside, CA1336218023
  4. Pablo Abbona, MDLos Angeles, CA1689856239
  5. Rashed AbdelaalRiverside, CA1518726090
  6. Ahmed Abdelhalim, MDRiverside, CA1275162927
  7. Fatemeh Abdollahi Mofakham, MDLos Angeles, CA1659652915
  8. Bennett Abe, MDVisalia, CA1184731283
  9. Stephen Abedon, M.D.Daly City, CA1689628687
  10. Richard Abello, M.D.La Jolla, CA1245205996

Common questions

What is Christopher M. Krol, MD's NPI number?

Christopher M. Krol, MD's National Provider Identifier (NPI) is 1114905007, issued on Jan 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Christopher M. Krol, MD located?

The NPPES record lists a practice address at 2401 Shadelanders Drive, Walnut Creek, CA, 94598. Phone: (510) 425-3000. Providers update this record themselves, so call before visiting.

How can I verify Christopher M. Krol, MD's license?

NPPES lists California license number C171861, 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.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.