Gregory Joseph Ardigo, M.D.
Specialist · Murrieta, CA
Gregory Joseph Ardigo, M.D. is a specialist with a practice address in Murrieta, California, and NPI 1548353956, issued on Sep 30, 2006. Check the license (California G75943, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Joseph Ardigo
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G75943 CA
Self-reported in NPPES; status is on the state search - Practice location
- 40404 California Oaks RD, Murrieta, CA 92562
- Phone
- (951) 600-0288
- Enumerated
- Sep 30, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (951) 600-0188
- Medicare enrollment
- Enrolled (PECOS I20110318000066); accepts Medicare assignment
- Medical or professional school
- University Of California, San Diego School Of Medicine, 1991
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 40404 California Oaks RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jack Dinh, M.D.Internal Medicine Physician1356366876
- Lawrence Hurwitz, M.D.Specialist1538252945
Verify Gregory Joseph Ardigo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G75943Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average specialist in 2024
1,143 Medicare Part D claims for 517 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 13 claims were for opioids.
Most prescribed
- Pantoprazole Sodium332 claims
- Sod Sulf-Potass Sulf-Mag Sulf212 claims
- Mesalamine60 claims
- Peg 3350-Electrolyte50 claims
- Diphenoxylate-Atropine40 claims
- Omeprazole35 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): 89.2 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).
Industry payments in 2024: $1,310.89
66 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Inland Empire Gastroenterology Medical Group, Inc.Murrieta, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory Joseph Ardigo among 5,749 specialist records in California
Gregory Joseph Ardigo, M.D. is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 60% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1991 · median 1989 among the 1,075 with a school on file
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in California
There are 5,749 specialist records in California.
All 5,749 in California → Every provider in Murrieta → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Robert Brown, D.O.Murrieta, CA 925621689663270
- Adrian Campo, MDMurrieta, CA 925621942318696
- Vincent Dang, M.D.Murrieta, CA 925621417947102
- Kevin Flaig, M.D.Murrieta, CA 925621427048321
- Michael Garcia, M.D.Murrieta, CA 925621992794424
- Wayne Garrett, M.D.Murrieta, CA 925621730178278
- Russell Hatt, M.D.Murrieta, CA 925621295725190
- Lawrence Hurwitz, M.D.Murrieta, CA 925621538252945
Common questions
What is Gregory Joseph Ardigo, M.D.'s NPI number?
Gregory Joseph Ardigo, M.D.'s National Provider Identifier (NPI) is 1548353956, issued on Sep 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Joseph Ardigo, M.D. located?
The NPPES record lists a practice address at 40404 California Oaks RD, Murrieta, CA, 92562. Phone: (951) 600-0288. Providers update this record themselves, so call before visiting.
How can I verify Gregory Joseph Ardigo, M.D.'s license?
NPPES lists California license number G75943, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Joseph Ardigo, M.D. prescribe under Medicare Part D?
In 2024, Gregory Joseph Ardigo, M.D. had 1,143 Medicare Part D claims for 517 beneficiaries; the average among specialist prescribers was 1,380. Part D covers Medicare prescriptions only.
What is Gregory Joseph Ardigo, M.D.'s MIPS final score?
The 2023 MIPS final score is 89.2 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.