Luis Diaz, MD
Internal Medicine Physician · Fair Lawn, NJ
Luis Diaz, MD is an internal medicine physician with a practice address in Fair Lawn, New Jersey, and NPI 1861966178, issued on Jan 20, 2019. Check the license (New Jersey 25MA12831900, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Luis Diaz
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 25MA12831900 NJ
P12405 NY
Self-reported in NPPES; status is on the state search - Practice location
- 14-01 Broadway Ste B, Fair Lawn, NJ 07410
- Phone
- (201) 791-4544
- Enumerated
- Jan 20, 2019
- Record last updated
- Nov 10, 2025
- Medicare enrollment
- Enrolled (PECOS I20251002001014); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 14-01 Broadway Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nilay Shah, MDClinical Neurophysiology Physician1154372621
Verify Luis Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA12831900Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average internal medicine physician in 2024
649 Medicare Part D claims for 123 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium55 claims
- Amlodipine Besylate31 claims
- Albuterol Sulfate Hfa30 claims
- Metoprolol Succinate22 claims
- Omeprazole20 claims
- Levothyroxine Sodium19 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: $25.59
1 payment: food and beverage; the largest payer was Zoll Services LLC (a/k/a Zoll LifeCor Corp). 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
- Sovereign Medical Group LLCFair Lawn, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Luis Diaz among 4,632 internal medicine physician records in New Jersey
Luis Diaz, MD is one of 4,632 internal medicine physician records with a practice address in New Jersey. 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 2019, is newer than 86% of them.
- NPI issued2019 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2013 · median 2000 among the 3,132 with a school on file
- Record last updated2025 · 63% 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 New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 internal medicine physician records list a practice address in Fair Lawn
They are 33 of the 1,041 NPPES records with a practice address in Fair Lawn, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Fair Lawn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Christine Aquino, M.D.Fair Lawn, NJ 074101134143928
- Basel Batarseh, MDFair Lawn, NJ 074101891803318
- Lawrence Berman, MDFair Lawn, NJ 074101083673297
- Assia Bromberg, M.D.Fair Lawn, NJ 074101629047261
- Nazma Hossain, M.D.Fair Lawn, NJ 074101518997360
- Mark Lehrman, MDFair Lawn, NJ 074101306809090
- Ellen Levan, M.D.Fair Lawn, NJ 074101710960927
- Olga Lishko, M.D.Fair Lawn, NJ 074101710940317
Common questions
What is Luis Diaz, MD's NPI number?
Luis Diaz, MD's National Provider Identifier (NPI) is 1861966178, issued on Jan 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Luis Diaz, MD located?
The NPPES record lists a practice address at 14-01 Broadway Ste B, Fair Lawn, NJ, 07410. Phone: (201) 791-4544. Providers update this record themselves, so call before visiting.
How can I verify Luis Diaz, MD's license?
NPPES lists New Jersey license number 25MA12831900, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Luis Diaz, MD prescribe under Medicare Part D?
In 2024, Luis Diaz, MD had 649 Medicare Part D claims for 123 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.