Mark E. Feinerman, MD
Gastroenterology Physician · Woodland Hills, CA
Mark E. Feinerman, MD is a gastroenterology physician with a practice address in Woodland Hills, California, and NPI 1790833754, issued on Jan 8, 2007. Check the license (California G43884, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark E. Feinerman
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G43884 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5601 DE Soto Ave, Woodland Hills, CA 91367
- Phone
- (818) 719-2000
- Enumerated
- Jan 8, 2007
- Record last updated
- Nov 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20050415000893); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1979
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 5601 DE Soto Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Houry Abajian, PHARM.D.Pharmacist1235297383
- Cecille Abeleda, RCP, RRTRegistered Respiratory Therapist1316424872
- Sunitha AbrahamCertified Respiratory Therapist1114409679
- Arineh AbramPharmacist1760108401
- Stephano Abusleme, DOStudent in an Organized Health Care Education/Training Program1538747639
- Ani Adamian, PHARM DPharmacist1043841851
Verify Mark E. Feinerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G43884Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average gastroenterology physician in 2024
570 Medicare Part D claims for 247 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Gavilyte-C101 claims
- Omeprazole90 claims
- Mesalamine39 claims
- Cholestyramine Light25 claims
- Famotidine25 claims
- Entecavir21 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupWoodland Hills, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark E. Feinerman among 2,140 gastroenterology physician records in California
Mark E. Feinerman, MD is one of 2,140 gastroenterology 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 2007, is newer than 52% of them.
- NPI issued2007 · 52% of these records are older, 37% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1979 · median 2002 among the 1,538 with a school on file
- Record last updated2021 · 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 207RG0100X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in California
There are 2,140 gastroenterology physician records in California.
All 2,140 in California → Every provider in Woodland Hills → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Mark Ewing, MDWoodland Hills, CA 913671023166816
- Afshin Khatibi, MDWoodland Hills, CA 913671053470641
- Alexander Lee, MDWoodland Hills, CA 913671235299405
- Jaspreet Panesar, MDWoodland Hills, CA 913671366594723
- Jitesh Patel, MDWoodland Hills, CA 913671053511634
- Hector Caballero, MDWestlake Village, CA 913611174515662
- Andrew Gregg, MD PHDThousand Oaks, CA 913611942769104
- Cristina Wiese, MDThousand Oaks, CA 913611710921564
Common questions
What is Mark E. Feinerman, MD's NPI number?
Mark E. Feinerman, MD's National Provider Identifier (NPI) is 1790833754, issued on Jan 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark E. Feinerman, MD located?
The NPPES record lists a practice address at 5601 DE Soto Ave, Woodland Hills, CA, 91367. Phone: (818) 719-2000. Providers update this record themselves, so call before visiting.
How can I verify Mark E. Feinerman, MD's license?
NPPES lists California license number G43884, 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 Mark E. Feinerman, MD prescribe under Medicare Part D?
In 2024, Mark E. Feinerman, MD had 570 Medicare Part D claims for 247 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.