Gregory W. Moreno, MD
Emergency Medicine Physician · Los Alamitos, CA
Gregory W. Moreno, MD is an emergency medicine physician with a practice address in Los Alamitos, California, and NPI 1245249481, issued on Aug 5, 2006. Check the license (California A91864, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory W. Moreno
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- A91864 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3751 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 598-1311
- Enumerated
- Aug 5, 2006
- Record last updated
- Oct 23, 2024
- Medicare enrollment
- Enrolled (PECOS I20061130000521); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 2003
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 3751 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Moustafa Aboshady, M.D.Hospitalist Physician1003127655
- Denis Bolton, D.O.Diagnostic Radiology Physician1952493876
- George Bozeman, MDEmergency Medicine Physician1295771285
- Kirsten Calder, MDEmergency Medicine Physician1952330938
- Monica Choi, MDAnesthesiology Physician1578804506
- Benjamin Cowan, MDDiagnostic Radiology Physician1760465728
Verify Gregory W. Moreno in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A91864Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average emergency medicine physician in 2024
64 Medicare Part D claims for 43 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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.
Industry payments in 2024: $124.98
3 payments; by number, the most common kind was food and beverage; the largest payer was Amgen Inc. The 12,335 providers of this specialty with any payment received $953.79 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
- Medhero San Clemente A Professional Medical CorporationSan Clemente, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gregory W. Moreno among 7,751 emergency medicine physician records in California
Gregory W. Moreno, MD is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated2003 · median 2011 among the 4,560 with a school on file
- Record last updated2024 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 emergency medicine physician records list a practice address in Los Alamitos
They are 19 of the 1,035 NPPES records with a practice address in Los Alamitos, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Los Alamitos → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- George Bozeman, MDLos Alamitos, CA 907201295771285
- Kirsten Calder, MDLos Alamitos, CA 907201952330938
- Monica Kumar, M.D,Los Alamitos, CA 907201700058963
- Mina Masri, D.O.Los Alamitos, CA 907201750390993
- Michael Perlman, M.D.Los Alamitos, CA 907201144256355
- Charles Rennie, MDLos Alamitos, CA 907201295767523
- Ivan Rokos, MDLos Alamitos, CA 907201184681991
- Natalie Shum, MDLos Alamitos, CA 907201114936358
Common questions
What is Gregory W. Moreno, MD's NPI number?
Gregory W. Moreno, MD's National Provider Identifier (NPI) is 1245249481, issued on Aug 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory W. Moreno, MD located?
The NPPES record lists a practice address at 3751 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 598-1311. Providers update this record themselves, so call before visiting.
How can I verify Gregory W. Moreno, MD's license?
NPPES lists California license number A91864, 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 Gregory W. Moreno, MD prescribe under Medicare Part D?
In 2024, Gregory W. Moreno, MD had 64 Medicare Part D claims for 43 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.