Maria D. Diaz, M.D.
Internal Medicine Physician · New York, NY
Maria D. Diaz, M.D. is an internal medicine physician with a practice address in New York, New York, and NPI 1316991417, issued on May 22, 2006. Check the license (New York 213444, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Maria D. Diaz
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 213444 NY
Self-reported in NPPES; status is on the state search - Practice location
- 4405 Broadway, New York, NY 10040
- Phone
- (212) 740-2020
- Enumerated
- May 22, 2006
- Record last updated
- Feb 12, 2024
- Fax
- (646) 666-0280
- Medicare enrollment
- Enrolled (PECOS I20040826000582); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 4405 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rhoda Galawanji, FNPFamily Nurse Practitioner1235782848
- Judd Garson, DDSGeneral Practice Dentistry1982825691
- Seong Chul HaAcupuncturist1336485531
- Mark Jacknin, D.O.Family Medicine Physician1033179338
Verify Maria D. Diaz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 213444Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3% more Medicare Part D claims than the average internal medicine physician in 2024
3,262 Medicare Part D claims for 415 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Atorvastatin Calcium163 claims
- Gabapentin142 claims
- Amlodipine Besylate115 claims
- Losartan Potassium107 claims
- Rosuvastatin Calcium88 claims
- Albuterol Sulfate Hfa76 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: $1,194.77
19 payments; by number, the most common kind was food and beverage; the largest payer was Amgen 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
- Griffin Myers Medical PCNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria D. Diaz among 12,067 internal medicine physician records in New York
Maria D. Diaz, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 53% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1978 · median 2002 among the 7,221 with a school on file
- Record last updated2024 · 61% 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 York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2,434 internal medicine physician records list a practice address in New York
They are 2,434 of the 98,468 NPPES records with a practice address in New York, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in New York → Internal Medicine Physician nationwide →
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- Carlos Nunez, MDNew York, NY 100401063673499
Common questions
What is Maria D. Diaz, M.D.'s NPI number?
Maria D. Diaz, M.D.'s National Provider Identifier (NPI) is 1316991417, issued on May 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maria D. Diaz, M.D. located?
The NPPES record lists a practice address at 4405 Broadway, New York, NY, 10040. Phone: (212) 740-2020. Providers update this record themselves, so call before visiting.
How can I verify Maria D. Diaz, M.D.'s license?
NPPES lists New York license number 213444, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Maria D. Diaz, M.D. prescribe under Medicare Part D?
In 2024, Maria D. Diaz, M.D. had 3,262 Medicare Part D claims for 415 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.