Leo T. Kroonen, MD
Orthopaedic Hand Surgery Physician · San Diego, CA
Leo T. Kroonen, MD is an orthopaedic hand surgery physician with a practice address in San Diego, California, and NPI 1669547857, issued on Nov 22, 2006. Check the license (California A82114, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Leo T. Kroonen
- Credential
- MD
- Primary taxonomy
- Orthopaedic Hand Surgery Physician 207XS0106X
- License number
- A82114 CA
Self-reported in NPPES; status is on the state search - Practice location
- 34800 Bob Wilson Dr, San Diego, CA 92134
- Phone
- (619) 532-8429
- Enumerated
- Nov 22, 2006
- Record last updated
- Dec 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (619) 532-8460
- Medicare enrollment
- Enrolled (PECOS I20100129000572); accepts Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 2001
- Entity
- Type 1 · individual
8 nearest orthopaedic hand surgery physician records → All 288 in California → Look up another NPI →
Also registered at 34800 Bob Wilson Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nehkonti Adams, M.D.Infectious Disease Physician1194985705
- Maryam Adebayo, APRN, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1346799269
- Caleb Adkins, DOGeneral Practice Physician1689430860
- Kyle Adkins, PHARMDPharmacist1477740884
- Phillip Adriano, M.D.Emergency Medicine Physician1568576585
Verify Leo T. Kroonen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A82114Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% fewer Medicare Part D claims than the average orthopaedic hand surgery physician in 2024
177 Medicare Part D claims for 71 beneficiaries, against an average of 186 among the 2,203 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 45 claims were for opioids.
Most prescribed
- Ibuprofen50 claims
- Meloxicam48 claims
- Oxycodone Hcl22 claims
- Hydrocodone-Acetaminophen18 claims
- Gabapentin17 claims
- Ondansetron Hcl16 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSimi Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leo T. Kroonen among 288 orthopaedic hand surgery physician records in California
Leo T. Kroonen, MD is one of 288 orthopaedic hand surgery physician records with a practice address in California. 85% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2001 · median 2004 among the 214 with a school on file
- Record last updated2021 · 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 207XS0106X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Hand Surgery Physician providers in California
There are 288 orthopaedic hand surgery physician records in California.
All 288 in California → Every provider in San Diego → Orthopaedic Hand Surgery Physician nationwide →
The 8 orthopaedic hand surgery physician records with the nearest ZIP codes
- Brian Fitzgerald, MDSan Diego, CA 921341720050321
- Darren Thomas, M.D.San Diego, CA 921341770768822
- John Waggoner, MD, MPHSan Diego, CA 921341104320076
- Gregory Alberton, M.D.San Diego, CA 921231457310179
- Hassan Azimi, M.D.San Diego, CA 921231932547536
- Dori Cage, M.D.San Diego, CA 921231871592253
- Alon Garay, M.D.San Diego, CA 921231578676573
- Byron King, MD, INC,San Diego, CA 921231548371925
Common questions
What is Leo T. Kroonen, MD's NPI number?
Leo T. Kroonen, MD's National Provider Identifier (NPI) is 1669547857, issued on Nov 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leo T. Kroonen, MD located?
The NPPES record lists a practice address at 34800 Bob Wilson Dr, San Diego, CA, 92134. Phone: (619) 532-8429. Providers update this record themselves, so call before visiting.
How can I verify Leo T. Kroonen, MD's license?
NPPES lists California license number A82114, 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 Leo T. Kroonen, MD prescribe under Medicare Part D?
In 2024, Leo T. Kroonen, MD had 177 Medicare Part D claims for 71 beneficiaries; the average among orthopaedic hand surgery physician prescribers was 186. Part D covers Medicare prescriptions only.
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.