John Thomas Butler, MD, PHD
Student in an Organized Health Care Education/Training Program · La Jolla, CA
John Thomas Butler, MD, PHD is a student in an organized health care education/training program with a practice address in La Jolla, California, and NPI 1336755164, issued on Sep 17, 2020. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Thomas Butler
- Credential
- MD, PHD
- Primary taxonomy
- Student in an Organized Health Care Education/Training Program 390200000X
- Practice location
- 3855 Health Sciences Dr, La Jolla, CA 92093
- Phone
- (858) 822-6046
- Enumerated
- Sep 17, 2020
- Record last updated
- Jul 10, 2023
- Entity
- Type 1 · individual
8 nearest student in an organized health care education/training program records → All 40,652 in California → Look up another NPI →
Also registered at 3855 Health Sciences Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Archana Ajmera, RN, MSN, APRN-BCNurse Practitioner1063792240
- Rabia Atayee, PHARM.D.Pharmacist1770655771
- Jill Attia, C.R.N.P.Nurse Practitioner1275598591
- Johana Austria, FNPFamily Nurse Practitioner1780963413
- Kasey Bamel, DNPFamily Nurse Practitioner1487106886
- Rafael Bejar, M.D., PH.D.Hematology & Oncology Physician1720051493
Verify John Thomas Butler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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% fewer Medicare Part D claims than the average student in an organized health care education/training program in 2024
58 Medicare Part D claims for 31 beneficiaries, against an average of 185 among the 59,748 providers of this specialty who prescribed in Part D.
Most prescribed
- Mometasone Furoate24 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.
John Thomas Butler among 40,652 student in an organized health care education/training program records in California
John Thomas Butler, MD, PHD is one of 40,652 student in an organized health care education/training program records with a practice address in California. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 24% of them.
- NPI issued2020 · 24% of these records are older, 72% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileNo · 6% of these records are
- Record last updated2023 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 390200000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
317 student in an organized health care education/training program records list a practice address in La Jolla
They are 317 of the 3,648 NPPES records with a practice address in La Jolla, and 40,652 student in an organized health care education/training program records in California.
All 40,652 in California → Every provider in La Jolla → Student in an Organized Health Care Education/Training Program nationwide →
The 8 student in an organized health care education/training program records with the nearest ZIP codes
- Meghan AslanianLa Jolla, CA 920931659638229
- J Rotsen Evaristo, M.D.La Jolla, CA 920931033667027
- Ida Ghlichloo, MDLa Jolla, CA 920931124529797
- Alana Iglewicz, M.D.La Jolla, CA 920931225163637
- Sadakatsu Ikeda, MDLa Jolla, CA 920931699925255
- Dena Khaef PanahLa Jolla, CA 920931366949828
- Michael KinoriLa Jolla, CA 920931407215197
- Jeanne Maglione, M.D.La Jolla, CA 920931215077003
Common questions
What is John Thomas Butler, MD, PHD's NPI number?
John Thomas Butler, MD, PHD's National Provider Identifier (NPI) is 1336755164, issued on Sep 17, 2020. An NPI identifies a provider in billing; it is not a license.
Where is John Thomas Butler, MD, PHD located?
The NPPES record lists a practice address at 3855 Health Sciences Dr, La Jolla, CA, 92093. Phone: (858) 822-6046. Providers update this record themselves, so call before visiting.
How can I verify John Thomas Butler, MD, PHD's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does John Thomas Butler, MD, PHD prescribe under Medicare Part D?
In 2024, John Thomas Butler, MD, PHD had 58 Medicare Part D claims for 31 beneficiaries; the average among student in an organized health care education/training program prescribers was 185. 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.