Robert Marc Webman, M.D
Gastroenterology Physician · Torrance, CA
Robert Marc Webman, M.D is a gastroenterology physician with a practice address in Torrance, California, and NPI 1174565527, issued on Jun 11, 2006. Check the license (California G39792, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert Marc Webman
- Credential
- M.D
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G39792 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4305 Torrance Blvd Ste 406, Torrance, CA 90503
- Phone
- (310) 542-5800
- Enumerated
- Jun 11, 2006
- Record last updated
- Dec 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (310) 542-5834
- Medicaid ID
- 00G397920 CA
- Medicare enrollment
- Enrolled (PECOS I20040729000652); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 1978
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Verify Robert Marc Webman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G39792Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,114 Medicare Part D claims for 231 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium158 claims
- Metformin Hcl149 claims
- Lisinopril126 claims
- Pantoprazole Sodium86 claims
- Omeprazole77 claims
- Hydrochlorothiazide76 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): 49.4 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).
Industry payments in 2024: $78.03
3 payments; by number, the most common kind was food and beverage; the largest payer was Aimmune Therapeutics, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 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.
Robert Marc Webman among 2,140 gastroenterology physician records in California
Robert Marc Webman, M.D 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 48% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1978 · median 2002 among the 1,538 with a school on file
- Record last updated2011 · 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 Torrance → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Kelsey Collins, MDTorrance, CA 905031912434382
- Nazir Khaja, M.D.Torrance, CA 905031962428102
- Mark Takemura, MDTorrance, CA 905031487721189
- Steven Weinstock, M.D.Torrance, CA 905031477620177
- Anil Dev, M.D.Torrance, CA 905021548279599
- Viktor Eysselein, M.D.Torrance, CA 905021609848191
- Linda Hou, MDTorrance, CA 905021982870622
- Henry Lam, DOTorrance, CA 905021457972648
Common questions
What is Robert Marc Webman, M.D's NPI number?
Robert Marc Webman, M.D's National Provider Identifier (NPI) is 1174565527, issued on Jun 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Marc Webman, M.D located?
The NPPES record lists a practice address at 4305 Torrance Blvd Ste 406, Torrance, CA, 90503. Phone: (310) 542-5800. Providers update this record themselves, so call before visiting.
How can I verify Robert Marc Webman, M.D's license?
NPPES lists California license number G39792, 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 Robert Marc Webman, M.D prescribe under Medicare Part D?
In 2024, Robert Marc Webman, M.D had 2,114 Medicare Part D claims for 231 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Robert Marc Webman, M.D's MIPS final score?
The 2023 MIPS final score is 49.4 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.