John Edward Lenahan, MD
Anesthesiology Physician · San Jose, CA
John Edward Lenahan, MD is an anesthesiology physician with a practice address in San Jose, California, and NPI 1568487593, issued on Jul 12, 2006. Check the license (California G28143, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Edward Lenahan
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- G28143 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2425 Samaritan Dr, San Jose, CA 95124
- Phone
- (408) 558-2100
- Enumerated
- Jul 12, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00G281430 CA
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 2425 Samaritan Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ligia Abohande, FNPFamily Nurse Practitioner1083126684
- Audrey Adams, MDAnesthesiology Physician1023045697
- Ravi Aggu Sher, MDCritical Care Medicine (Internal Medicine) Physician1285898585
- Keyvan Bahadi, MDSurgery Physician1376595314
- Rodney Baker, MDAnesthesiology Physician1912934621
- Ali Bassiri, MDPulmonary Disease Physician1316010275
Verify John Edward Lenahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G28143Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average anesthesiology physician in 2024
17 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D.
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 Edward Lenahan among 7,571 anesthesiology physician records in California
John Edward Lenahan, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in San Jose → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Audrey Adams, MDSan Jose, CA 951241023045697
- Rodney Baker, MDSan Jose, CA 951241912934621
- Steven Block, MDSan Jose, CA 951241508895962
- Anthony Bommarito, MDSan Jose, CA 951241164458725
- Richard Briones, MDSan Jose, CA 951241518993047
- Debra Cellar, MDSan Jose, CA 951241992731384
- John Cellar, MDSan Jose, CA 951241073549473
- Rodney Clark, MDSan Jose, CA 951241790716041
Common questions
What is John Edward Lenahan, MD's NPI number?
John Edward Lenahan, MD's National Provider Identifier (NPI) is 1568487593, issued on Jul 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Edward Lenahan, MD located?
The NPPES record lists a practice address at 2425 Samaritan Dr, San Jose, CA, 95124. Phone: (408) 558-2100. Providers update this record themselves, so call before visiting.
How can I verify John Edward Lenahan, MD's license?
NPPES lists California license number G28143, 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 Edward Lenahan, MD prescribe under Medicare Part D?
In 2024, John Edward Lenahan, MD had 17 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. 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.