Greg Ellis Maler, DO
Family Medicine Physician · Pomona, CA
Greg Ellis Maler, DO is a family medicine physician with a practice address in Pomona, California, and NPI 1033613104, issued on Mar 22, 2018. Check the license (California 20A17625, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Greg Ellis Maler
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A17625 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1450 E Holt Ave, Pomona, CA 91767
- Phone
- (909) 630-7927
- Enumerated
- Mar 22, 2018
- Record last updated
- Aug 10, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (909) 620-6719
- Medicare enrollment
- Enrolled (PECOS I20220628003096); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1450 E Holt Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kartika Budiman, NURSE PRACTITIONERFamily Nurse Practitioner1295200038
- Alyssa CatindigNurse Practitioner1881437424
- Heather Helming, DOFamily Medicine Physician1407084502
- Samantha Jape, NPFamily Nurse Practitioner1407661473
Verify Greg Ellis Maler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A17625Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average family medicine physician in 2024
2,865 Medicare Part D claims for 144 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 66 claims were for opioids.
Most prescribed
- Atorvastatin Calcium270 claims
- Amlodipine Besylate239 claims
- Lisinopril148 claims
- Metformin Hcl129 claims
- Ozempic112 claims
- Omeprazole86 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.
Industry payments in 2024: $48.15
2 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Pomona Community Health CenterOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Greg Ellis Maler among 17,133 family medicine physician records in California
Greg Ellis Maler, DO is one of 17,133 family 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 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2018 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
78 family medicine physician records list a practice address in Pomona
They are 78 of the 5,102 NPPES records with a practice address in Pomona, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Pomona → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Snezana Begovic, MDPomona, CA 917671033135736
- Douglas Chiriboga, MDPomona, CA 917671225038342
- April Ford, MDPomona, CA 917671023045283
- Jaime Gonzalez, M.D.Pomona, CA 917671235180563
- Roger Hall, DOPomona, CA 917671336118579
- Sudathi Jeereddi, MDPomona, CA 917671609844984
- Randy Karu, M.D.Pomona, CA 917671386645760
- Keith Kusunis, MDPomona, CA 917671033110945
Common questions
What is Greg Ellis Maler, DO's NPI number?
Greg Ellis Maler, DO's National Provider Identifier (NPI) is 1033613104, issued on Mar 22, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Greg Ellis Maler, DO located?
The NPPES record lists a practice address at 1450 E Holt Ave, Pomona, CA, 91767. Phone: (909) 630-7927. Providers update this record themselves, so call before visiting.
How can I verify Greg Ellis Maler, DO's license?
NPPES lists California license number 20A17625, 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 Greg Ellis Maler, DO prescribe under Medicare Part D?
In 2024, Greg Ellis Maler, DO had 2,865 Medicare Part D claims for 144 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.