John Kronick, M.D.
Orthopaedic Surgery Physician · Walnut Creek, CA
John Kronick, M.D. is an orthopaedic surgery physician with a practice address in Walnut Creek, California, and NPI 1639129034, issued on May 10, 2006. Check the license (California G79932, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Kronick
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- G79932 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2625 Shadelands Dr, Walnut Creek, CA 94598
- Phone
- (925) 939-8585
- Enumerated
- May 10, 2006
- Record last updated
- Nov 12, 2025
- Fax
- (925) 933-2709
- Medicare enrollment
- Enrolled (PECOS I20040723000671); accepts Medicare assignment
- Medical or professional school
- R Franklin University Of Med & Sci/Chicago Medical School, 1990
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 2625 Shadelands Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Desiree AgostoFamily Nurse Practitioner1235907197
- James Albertson, DPTOrthopedic Physical Therapist1558919944
- Afshin AnoushiravaniOrthopaedic Surgery Physician1003310293
- Audrielle Angela Asuncion, OTR/LHand Occupational Therapist1689455016
- Lauren Baker, OTRHand Occupational Therapist1114669322
- Jason BalaoingHand Occupational Therapist1144714288
Verify John Kronick in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G79932Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% more Medicare Part D claims than the average orthopaedic surgery physician in 2024
584 Medicare Part D claims for 211 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 2% of claims. 95 claims were for opioids.
Most prescribed
- Amoxicillin123 claims
- Celecoxib73 claims
- Gabapentin55 claims
- Tramadol Hcl42 claims
- Cyclobenzaprine Hcl33 claims
- Cephalexin30 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Golden State Orthopedics And SpineWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Kronick among 2,276 orthopaedic surgery physician records in California
John Kronick, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1990 · median 2003 among the 1,347 with a school on file
- Record last updated2025 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Walnut Creek → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Afshin AnoushiravaniWalnut Creek, CA 945981003310293
- Robert Buckley, M.D.Walnut Creek, CA 945981952351280
- Leo Calafi, MDWalnut Creek, CA 945981720079072
- David Contreras, M.D.Walnut Creek, CA 945981821048216
- Robert Flaig, M.D.Walnut Creek, CA 945981386818102
- Sean Griffiths, D.O.Walnut Creek, CA 945981457705667
- John Knight, M.D.Walnut Creek, CA 945981558310938
- Douglas Lange, M.D.Walnut Creek, CA 945981003865064
Common questions
What is John Kronick, M.D.'s NPI number?
John Kronick, M.D.'s National Provider Identifier (NPI) is 1639129034, issued on May 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Kronick, M.D. located?
The NPPES record lists a practice address at 2625 Shadelands Dr, Walnut Creek, CA, 94598. Phone: (925) 939-8585. Providers update this record themselves, so call before visiting.
How can I verify John Kronick, M.D.'s license?
NPPES lists California license number G79932, 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.
How much does John Kronick, M.D. prescribe under Medicare Part D?
In 2024, John Kronick, M.D. had 584 Medicare Part D claims for 211 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. Part D covers Medicare prescriptions only.
What is John Kronick, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.