Joseph G. Mallon, MD
Hospitalist Physician · San Francisco, CA
Joseph G. Mallon, MD is a hospitalist physician with a practice address in San Francisco, California, and NPI 1407041197, issued on Sep 6, 2007. Check the license (California A97574, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph G. Mallon
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A97574 CA
Self-reported in NPPES; status is on the state search - Practice location
- 900 Hyde St, San Francisco, CA 94109
- Phone
- (415) 353-6817
- Enumerated
- Sep 6, 2007
- Record last updated
- Dec 8, 2025
- Medicare enrollment
- Enrolled (PECOS I20071027000054); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 900 Hyde St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joseph G. Mallon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A97574Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average hospitalist physician in 2024
181 Medicare Part D claims for 45 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Most prescribed
- Allopurinol17 claims
- Eliquis17 claims
- Atorvastatin Calcium13 claims
- Memantine Hcl11 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 72 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Vituity Hospitalists PCSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joseph G. Mallon among 3,099 hospitalist physician records in California
Joseph G. Mallon, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 27% of them.
- NPI issued2007 · 27% of these records are older, 66% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2001 · median 2010 among the 2,505 with a school on file
- Record last updated2025 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in San Francisco → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jeannie Brewer, MDSan Francisco, CA 941091609898345
- Robert Eldabaje, MDSan Francisco, CA 941091609211176
- Jeffrey FrankSan Francisco, CA 941091639128895
- Hanley Ma, M.D.San Francisco, CA 941091609191006
- Robert Matz, M.D.San Francisco, CA 941091558503086
- Michael McCarthy, M.D./PH.D.San Francisco, CA 941091982616553
- Jaclyn McGowan, MDSan Francisco, CA 941091629230495
- Nisha Patel, D.O.San Francisco, CA 941091326276528
Common questions
What is Joseph G. Mallon, MD's NPI number?
Joseph G. Mallon, MD's National Provider Identifier (NPI) is 1407041197, issued on Sep 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Joseph G. Mallon, MD located?
The NPPES record lists a practice address at 900 Hyde St, San Francisco, CA, 94109. Phone: (415) 353-6817. Providers update this record themselves, so call before visiting.
How can I verify Joseph G. Mallon, MD's license?
NPPES lists California license number A97574, 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 Joseph G. Mallon, MD prescribe under Medicare Part D?
In 2024, Joseph G. Mallon, MD had 181 Medicare Part D claims for 45 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Joseph G. Mallon, MD's MIPS final score?
The 2023 MIPS final score is 72 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.