Gregory Mattson, M. D.
Family Medicine Physician · La Jolla, CA
Gregory Mattson, M. D. is a family medicine physician with a practice address in La Jolla, California, and NPI 1922155282, issued on Jan 5, 2007. Check the license (California G32164, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory Mattson
- Credential
- M. D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G32164 CA
Self-reported in NPPES; status is on the state search - Practice location
- 210 Coast Blvd, La Jolla, CA 92037
- Phone
- (858) 454-6141
- Enumerated
- Jan 5, 2007
- Record last updated
- Aug 3, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (858) 454-2310
- Medicare enrollment
- Enrolled (PECOS I20120315000227); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1975
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 210 Coast Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Weston, MDFamily Medicine Physician1639131832
Verify Gregory Mattson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G32164Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average family medicine physician in 2024
210 Medicare Part D claims for 44 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium27 claims
- Simvastatin16 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.
Gregory Mattson among 17,133 family medicine physician records in California
Gregory Mattson, M. D. is one of 17,133 family medicine physician records with a practice address in California. 81% 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 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1975 · median 2005 among the 10,652 with a school on file
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in La Jolla → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Nasrin ArbabiLa Jolla, CA 920371881655462
- Harriet Bielawski, M.D.La Jolla, CA 920371962474049
- Gerard Blake, MDLa Jolla, CA 920371962481929
- Elena Dembo-Smeaton, M.D.La Jolla, CA 920371184795296
- L Dinenberg, M.D.La Jolla, CA 920371952479164
- Gilbert Dominguez, M.D.La Jolla, CA 920371275601478
- Teresa Dudarewicz, M.D.La Jolla, CA 920371679634406
- Mona Ezzat, M.D.La Jolla, CA 920371902844939
Common questions
What is Gregory Mattson, M. D.'s NPI number?
Gregory Mattson, M. D.'s National Provider Identifier (NPI) is 1922155282, issued on Jan 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Mattson, M. D. located?
The NPPES record lists a practice address at 210 Coast Blvd, La Jolla, CA, 92037. Phone: (858) 454-6141. Providers update this record themselves, so call before visiting.
How can I verify Gregory Mattson, M. D.'s license?
NPPES lists California license number G32164, 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 Gregory Mattson, M. D. prescribe under Medicare Part D?
In 2024, Gregory Mattson, M. D. had 210 Medicare Part D claims for 44 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.