Diana Marie Nilsen, MD
Internal Medicine Physician · Brooklyn, NY
Diana Marie Nilsen, MD is an internal medicine physician with a practice address in Brooklyn, New York, and NPI 1437194560, issued on Jun 20, 2006. Check the license (New York 1836651, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Diana Marie Nilsen
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 1836651 NY
Self-reported in NPPES; status is on the state search - Practice location
- 295 Flatbush Avenue Ext FL 4, Brooklyn, NY 11201
- Phone
- (718) 249-1468
- Enumerated
- Jun 20, 2006
- Record last updated
- Mar 11, 2024
- Medicare enrollment
- Enrolled (PECOS I20040506001551); may accept 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 295 Flatbush Avenue Ext FL 4
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Diana Marie Nilsen 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 1836651Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- City OF New York Office OF Payroll AdministrationBrooklyn, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Marie Nilsen among 12,067 internal medicine physician records in New York
Diana Marie Nilsen, MD 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
- Graduated1989 · 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).
1,497 internal medicine physician records list a practice address in Brooklyn
They are 1,497 of the 64,057 NPPES records with a practice address in Brooklyn, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Brooklyn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sam Amirfar, M.D.Brooklyn, NY 112011497745962
- Lawrence Brown, MDBrooklyn, NY 112011760434039
- Joseph Burzynski, MD MPHBrooklyn, NY 112011205889979
- Nelly Cohen, MDBrooklyn, NY 112011780657189
- Carlota John-Hull, MDBrooklyn, NY 112011043261258
- Christine Kimble, MDBrooklyn, NY 112011285696260
- Matthew Lane, MDBrooklyn, NY 112011912968751
- Rajani Lowe, MDBrooklyn, NY 112011487613824
Common questions
What is Diana Marie Nilsen, MD's NPI number?
Diana Marie Nilsen, MD's National Provider Identifier (NPI) is 1437194560, issued on Jun 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Marie Nilsen, MD located?
The NPPES record lists a practice address at 295 Flatbush Avenue Ext FL 4, Brooklyn, NY, 11201. Phone: (718) 249-1468. Providers update this record themselves, so call before visiting.
How can I verify Diana Marie Nilsen, MD's license?
NPPES lists New York license number 1836651, 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.
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.