Marc Warren Judd, M.D.
General Practice Physician · Moorpark, CA
Marc Warren Judd, M.D. is a general practice physician with a practice address in Moorpark, California, and NPI 1124025218, issued on Jul 5, 2005. Check the license (California A66629, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marc Warren Judd
- Credential
- M.D.
- Primary taxonomy
- General Practice Physician 208D00000X
- License number
- A66629 CA
Self-reported in NPPES; status is on the state search - Practice location
- 301 Science Dr, Moorpark, CA 93021
- Phone
- (805) 531-9400
- Enumerated
- Jul 5, 2005
- Record last updated
- Sep 12, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (805) 531-9499
- Medicare enrollment
- Enrolled (PECOS I20121205000252); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1997
- Entity
- Type 1 · individual
8 nearest general practice physician records → All 1,956 in California → Look up another NPI →
Also registered at 301 Science Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aimee Anderson, PH.D., BCBA-DBehavior Analyst1356630602
- Karen Barbi, PSY.D., BCBA-DClinical Psychologist1891085155
- Dawn Chandler, MFT INTERNMarriage & Family Therapist1184009250
- Kathleen Reazer, MS, MFTMarriage & Family Therapist1548407158
Verify Marc Warren Judd in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66629Check 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 general practice physician in 2024
193 Medicare Part D claims for 162 beneficiaries, against an average of 3,030 among the 8,395 providers of this specialty who prescribed in Part D.
Most prescribed
- Nitrofurantoin Mono-Macro28 claims
- Cephalexin15 claims
- Triamcinolone Acetonide14 claims
- Amoxicillin12 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 MIPS final score for 2023 (Medicare payment program): 97.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Adventist Health Physicians NetworkSimi Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marc Warren Judd among 1,956 general practice physician records in California
Marc Warren Judd, M.D. is one of 1,956 general practice physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileYes · 27% of these records are
- Graduated1997 · median 1994 among the 520 with a school on file
- Record last updated2012 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208D00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
General Practice Physician providers in California
There are 1,956 general practice physician records in California.
All 1,956 in California → Every provider in Moorpark → General Practice Physician nationwide →
The 8 general practice physician records with the nearest ZIP codes
- Katrina Fernandes, FNPMoorpark, CA 930211366026999
- John Zemjanis, M.D.Carpinteria, CA 930131093898272
- Mark Bettermon, M.D. D.O.Camarillo, CA 930121417367079
- Alan KratzOxnard, CA 930301316461866
- Robert Oldt, MDOxnard, CA 930301689858490
- Hung Do, MDCamarillo, CA 930101659673382
- Paduvilan Narayanan, M.D.Oxnard, CA 930331851437511
- Kristof Siciarz, MDOxnard, CA 930351609316538
Common questions
What is Marc Warren Judd, M.D.'s NPI number?
Marc Warren Judd, M.D.'s National Provider Identifier (NPI) is 1124025218, issued on Jul 5, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Marc Warren Judd, M.D. located?
The NPPES record lists a practice address at 301 Science Dr, Moorpark, CA, 93021. Phone: (805) 531-9400. Providers update this record themselves, so call before visiting.
How can I verify Marc Warren Judd, M.D.'s license?
NPPES lists California license number A66629, 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 Marc Warren Judd, M.D. prescribe under Medicare Part D?
In 2024, Marc Warren Judd, M.D. had 193 Medicare Part D claims for 162 beneficiaries; the average among general practice physician prescribers was 3,030. Part D covers Medicare prescriptions only.
What is Marc Warren Judd, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.1 of 100. 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.