Derek Marc Dobalian, MD
Gastroenterology Physician · Long Beach, CA
Derek Marc Dobalian, MD is a gastroenterology physician with a practice address in Long Beach, California, and NPI 1235225467, issued on Oct 5, 2006. Check the license (California G48996, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Derek Marc Dobalian
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- G48996 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3816 Woodruff Ave, Long Beach, CA 90808
- Phone
- (562) 420-7670
- Enumerated
- Oct 5, 2006
- Record last updated
- Aug 25, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (562) 429-4064
- Medicaid ID
- 00G489960 CA
- Medicare enrollment
- Enrolled (PECOS I20120323000099); accepts Medicare assignment
- Medical or professional school
- Loma Linda University School Of Medicine, 1981
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 2,140 in California → Look up another NPI →
Also registered at 3816 Woodruff Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Derek Marc Dobalian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G48996Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
15% more Medicare Part D claims than the average gastroenterology physician in 2024
931 Medicare Part D claims for 104 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Pantoprazole Sodium108 claims
- Atorvastatin Calcium48 claims
- Famotidine43 claims
- Amlodipine Besylate37 claims
- Phenytoin28 claims
- Humulin N Kwikpen27 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.
Derek Marc Dobalian among 2,140 gastroenterology physician records in California
Derek Marc Dobalian, 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 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
- Graduated1981 · median 2002 among the 1,538 with a school on file
- Record last updated2010 · 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 Long Beach → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Seper Dezfoli, M.D.Long Beach, CA 908081104159383
- Saeid Goshtasbi, MDLong Beach, CA 908081518144344
- Erik Kerekes, M.D.Long Beach, CA 908081871679340
- Mehrdad Saliminejad, M.D.Long Beach, CA 908081891934832
- Eric ChuLong Beach, CA 908061790879351
- Peter Sullivan, MDLong Beach, CA 908061538664016
- Anoop Shah, MDLong Beach, CA 908131154492361
- Michael Blam, MDLong Beach, CA 908151801877733
Common questions
What is Derek Marc Dobalian, MD's NPI number?
Derek Marc Dobalian, MD's National Provider Identifier (NPI) is 1235225467, issued on Oct 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Derek Marc Dobalian, MD located?
The NPPES record lists a practice address at 3816 Woodruff Ave, Long Beach, CA, 90808. Phone: (562) 420-7670. Providers update this record themselves, so call before visiting.
How can I verify Derek Marc Dobalian, MD's license?
NPPES lists California license number G48996, 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 Derek Marc Dobalian, MD prescribe under Medicare Part D?
In 2024, Derek Marc Dobalian, MD had 931 Medicare Part D claims for 104 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.