John J. Murphy, M.D.
Internal Medicine Physician · Oakland, CA
John J. Murphy, M.D. is an internal medicine physician with a practice address in Oakland, California, and NPI 1437119591, issued on Mar 24, 2006. Check the license (California A99461, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John J. Murphy
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A99461 CA
46482 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1515 Fruitvale Avenue, Oakland, CA 94601
- Phone
- (510) 535-6300
- Enumerated
- Mar 24, 2006
- Record last updated
- Sep 16, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (510) 535-4019
- Medicaid ID
- 390401600 MN
- Medicare enrollment
- Enrolled (PECOS I20050722000155); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 2002
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 1515 Fruitvale Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristen Miranda, MDFamily Medicine Physician1902131048
Verify John J. Murphy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99461Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average internal medicine physician in 2024
596 Medicare Part D claims for 65 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Atorvastatin Calcium48 claims
- Amlodipine Besylate29 claims
- Gabapentin27 claims
- Albuterol Sulfate Hfa24 claims
- Losartan Potassium23 claims
- Famotidine19 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
- LA Clinica DE LA Raza IncConcord, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John J. Murphy among 17,696 internal medicine physician records in California
John J. Murphy, M.D. 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 fileYes · 63% of these records are
- Graduated2002 · median 2004 among the 11,065 with a school on file
- Record last updated2019 · 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).
432 internal medicine physician records list a practice address in Oakland
They are 432 of the 18,558 NPPES records with a practice address in Oakland, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Oakland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Zaina El-Isa, MDOakland, CA 946011861623555
- Claire Horton, MDOakland, CA 946011649374109
- Astha Kanani, M.D.Oakland, CA 946011770880163
- Bhrett Lash, MDOakland, CA 946011568489383
- Esteban Lovato, M.D.Oakland, CA 946011376610923
- Joseph Marquis, MDOakland, CA 946011598084329
- Bruce O'Neil, M.D.Oakland, CA 946011255399580
- Mark Robb, MDOakland, CA 946011053499665
Common questions
What is John J. Murphy, M.D.'s NPI number?
John J. Murphy, M.D.'s National Provider Identifier (NPI) is 1437119591, issued on Mar 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John J. Murphy, M.D. located?
The NPPES record lists a practice address at 1515 Fruitvale Avenue, Oakland, CA, 94601. Phone: (510) 535-6300. Providers update this record themselves, so call before visiting.
How can I verify John J. Murphy, M.D.'s license?
NPPES lists California license number A99461, 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 J. Murphy, M.D. prescribe under Medicare Part D?
In 2024, John J. Murphy, M.D. had 596 Medicare Part D claims for 65 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.