Roy Marie A. Margallo, M.D.
Internal Medicine Physician · Las Vegas, NV
Roy Marie A. Margallo, M.D. is an internal medicine physician with a practice address in Las Vegas, Nevada, and NPI 1538314950, issued on Nov 26, 2008. Check the license (Nevada 14033, as entered in NPPES) on the Nevada State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Roy Marie A. Margallo
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 14033 NV
Self-reported in NPPES; status is on the state search - Practice location
- 2255 Renaissance Dr Ste B, Las Vegas, NV 89119
- Phone
- (702) 500-1728
- Enumerated
- Nov 26, 2008
- Record last updated
- Apr 23, 2026
- Fax
- (702) 356-3102
- Medicare enrollment
- Enrolled (PECOS I20111011000181); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,229 in Nevada → Look up another NPI →
Also registered at 2255 Renaissance Dr Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ma Teresa Mercado, APRNFamily Nurse Practitioner1235984931
- Mark Quim, APRNPsychiatric/Mental Health Nurse Practitioner1780456350
Verify Roy Marie A. Margallo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNevada State Board of Medical Examiners
Search for license 14033Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
26% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,340 Medicare Part D claims for 253 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Amlodipine Besylate139 claims
- Levothyroxine Sodium93 claims
- Atorvastatin Calcium89 claims
- Tamsulosin Hcl81 claims
- Furosemide80 claims
- Losartan Potassium77 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: $298.85
15 payments; by number, the most common kind was food and beverage; the largest payer was Smith+Nephew, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Celestial Health SolutionsLas Vegas, NV
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Roy Marie A. Margallo among 1,229 internal medicine physician records in Nevada
Roy Marie A. Margallo, M.D. is one of 1,229 internal medicine physician records with a practice address in Nevada. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 50% of them.
- NPI issued2008 · 50% of these records are older, 46% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1994 · median 2006 among the 772 with a school on file
- Record last updated2026 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Nevada practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
716 internal medicine physician records list a practice address in Las Vegas
They are 716 of the 65,269 NPPES records with a practice address in Las Vegas, and 1,229 internal medicine physician records in Nevada.
All 1,229 in Nevada → Every provider in Las Vegas → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sherif Abdou, M.D.Las Vegas, NV 891191316905656
- Amir Aftab, MDLas Vegas, NV 891191083671010
- Fawad AhmedLas Vegas, NV 891191174571723
- Romualdo Aragon, MDLas Vegas, NV 891191043276249
- Kristi Asante, MDLas Vegas, NV 891191811955354
- Amir Bacchus, M.D.Las Vegas, NV 891191619925476
- Afi Bruce, MDLas Vegas, NV 891191467410639
- Warren Evins, MD, PHD, FACPLas Vegas, NV 891191164488326
Common questions
What is Roy Marie A. Margallo, M.D.'s NPI number?
Roy Marie A. Margallo, M.D.'s National Provider Identifier (NPI) is 1538314950, issued on Nov 26, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Roy Marie A. Margallo, M.D. located?
The NPPES record lists a practice address at 2255 Renaissance Dr Ste B, Las Vegas, NV, 89119. Phone: (702) 500-1728. Providers update this record themselves, so call before visiting.
How can I verify Roy Marie A. Margallo, M.D.'s license?
NPPES lists Nevada license number 14033, as entered by the provider. Search the Nevada State Board of Medical Examiners at https://medboard.nv.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Roy Marie A. Margallo, M.D. prescribe under Medicare Part D?
In 2024, Roy Marie A. Margallo, M.D. had 2,340 Medicare Part D claims for 253 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.