John A. Mallery, MD
Cardiovascular Disease Physician · Grass Valley, CA
John A. Mallery, MD is a cardiovascular disease physician with a practice address in Grass Valley, California, and NPI 1780664201, issued on Jan 19, 2006. Check the license (California 00G51106, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John A. Mallery
- Credential
- MD
- Primary taxonomy
- Cardiovascular Disease Physician 207RC0000X
- License number
- 00G51106 CA
Self-reported in NPPES; status is on the state search - Practice location
- 150 Catherine Lane, Grass Valley, CA 95945
- Phone
- (530) 477-8358
- Enumerated
- Jan 19, 2006
- Record last updated
- Apr 22, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (530) 477-2015
- Medicaid ID
- GR0045980 CA
- Entity
- Type 1 · individual
8 nearest cardiovascular disease physician records → All 2,574 in California → Look up another NPI →
Verify John A. Mallery in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 00G51106Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average cardiovascular disease physician in 2024
40 Medicare Part D claims, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D.
Most prescribed
- Spironolactone11 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 A. Mallery among 2,574 cardiovascular disease physician records in California
John A. Mallery, MD is one of 2,574 cardiovascular disease physician records with a practice address in California. 83% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 45% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2010 · 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 207RC0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Cardiovascular Disease Physician providers in California
There are 2,574 cardiovascular disease physician records in California.
All 2,574 in California → Every provider in Grass Valley → Cardiovascular Disease Physician nationwide →
The 8 cardiovascular disease physician records with the nearest ZIP codes
- Peter Callaham, MDGrass Valley, CA 959451750305025
- Anabel Facemire, MDGrass Valley, CA 959451427043280
- Kenneth Marvin, MDGrass Valley, CA 959451417035221
- Ryan Smith, M.D.Grass Valley, CA 959451639197452
- Nathaniel Woodruff, M.D., PHD, FACCGrass Valley, CA 959451275623191
- Peter Magnusson, M.D.Chico, CA 959261164595914
- Marcia Moore, MDChico, CA 959261104875269
- Catherine Prince, D.O.Chico, CA 959261649539586
Common questions
What is John A. Mallery, MD's NPI number?
John A. Mallery, MD's National Provider Identifier (NPI) is 1780664201, issued on Jan 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John A. Mallery, MD located?
The NPPES record lists a practice address at 150 Catherine Lane, Grass Valley, CA, 95945. Phone: (530) 477-8358. Providers update this record themselves, so call before visiting.
How can I verify John A. Mallery, MD's license?
NPPES lists California license number 00G51106, 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 A. Mallery, MD prescribe under Medicare Part D?
In 2024, John A. Mallery, MD had 40 Medicare Part D claims; the average among cardiovascular disease physician prescribers was 3,078. 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.