Joanne Patricia Keenan, D.O.
Internal Medicine Physician · San Diego, CA
Joanne Patricia Keenan, D.O. is an internal medicine physician with a practice address in San Diego, California, and NPI 1043281074, issued on Jan 28, 2006. Check the license (California 20A 8728, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joanne Patricia Keenan
- Credential
- D.O.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 20A 8728 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6719 Alvarado RD, San Diego, CA 92120
- Phone
- (619) 286-8804
- Enumerated
- Jan 28, 2006
- Record last updated
- Mar 5, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (619) 286-2344
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 6719 Alvarado RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joanne Patricia Keenan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A 8728Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
20% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,545 Medicare Part D claims for 83 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium148 claims
- Amlodipine Besylate134 claims
- Levothyroxine Sodium111 claims
- Losartan Potassium102 claims
- Alendronate Sodium97 claims
- Metoprolol Succinate78 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.
Joanne Patricia Keenan among 17,696 internal medicine physician records in California
Joanne Patricia Keenan, D.O. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2014 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
961 internal medicine physician records list a practice address in San Diego
They are 961 of the 52,937 NPPES records with a practice address in San Diego, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Diego → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Wilfredo Abesamis, M.D.San Diego, CA 921201992754832
- Kenneth Antons, M.D.San Diego, CA 921201982668182
- David Chang, M.D.San Diego, CA 921201073596342
- Fred Corey, M.D.San Diego, CA 921201912989674
- Elaine Gertser, MDSan Diego, CA 921201992719967
- Hyunsoo Kim, MDSan Diego, CA 921201598789737
- Murray Kornblit, M.D.San Diego, CA 921201932181682
- John Marino, M.D.San Diego, CA 921201780667030
Common questions
What is Joanne Patricia Keenan, D.O.'s NPI number?
Joanne Patricia Keenan, D.O.'s National Provider Identifier (NPI) is 1043281074, issued on Jan 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joanne Patricia Keenan, D.O. located?
The NPPES record lists a practice address at 6719 Alvarado RD, San Diego, CA, 92120. Phone: (619) 286-8804. Providers update this record themselves, so call before visiting.
How can I verify Joanne Patricia Keenan, D.O.'s license?
NPPES lists California license number 20A 8728, 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 Joanne Patricia Keenan, D.O. prescribe under Medicare Part D?
In 2024, Joanne Patricia Keenan, D.O. had 2,545 Medicare Part D claims for 83 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.