Mark Edward Bertsch, FNP
Family Nurse Practitioner · Port Jefferson, NY
Mark Edward Bertsch, FNP is a family nurse practitioner with a practice address in Port Jefferson, New York, and NPI 1649005620, issued on Sep 7, 2024. Check the license (New York 354320, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Edward Bertsch
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 354320 NY
Self-reported in NPPES; status is on the state search - Practice location
- 200 Belle Terre RD, Port Jefferson, NY 11777
- Phone
- (631) 474-6000
- Enumerated
- Sep 7, 2024
- Record last updated
- Sep 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20241113001988); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →
Also registered at 200 Belle Terre RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Hani Abdel-Rahman, DOStudent in an Organized Health Care Education/Training Program1366145138
- David Anschel, M.D.Neurology Physician1689620387
- Joseph Audiino, P.A.Physician Assistant1487620100
- Robert Awadallah, PHARM.D, ANP, MBAPharmacist1043855596
- Cristina BadalamentiOccupational Therapist1609373489
- Nannette Bauers-Chu, P.T.Physical Therapist1972727741
Verify Mark Edward Bertsch in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license 354320Check 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
- Southwest Suffolk Medical PCPort Jefferson, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Edward Bertsch among 14,805 family nurse practitioner records in New York
Mark Edward Bertsch, FNP is one of 14,805 family nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 83% of them.
- NPI issued2024 · 83% of these records are older, 10% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileYes · 49% of these records are
- Graduated2024 · median 2019 among the 7,239 with a school on file
- Record last updated2024 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
17 family nurse practitioner records list a practice address in Port Jefferson
They are 17 of the 983 NPPES records with a practice address in Port Jefferson, and 14,805 family nurse practitioner records in New York.
All 14,805 in New York → Every provider in Port Jefferson → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Katlyn Anthony, NPPort Jefferson, NY 117771023679503
- Eugene Matthew Arena, NPPort Jefferson, NY 117771356997308
- Jacqueline Bishop, FNPPort Jefferson, NY 117771609416940
- Margaret Coffey, NPPort Jefferson, NY 117771376652461
- Jennifer Condlin, RNPort Jefferson, NY 117771720360340
- Theresa Grimes, FNP-BCPort Jefferson, NY 117771912910910
- Jenna Guardino, RN BSN FNP B.CPort Jefferson, NY 117771821726878
- Kaitlin MacdowellPort Jefferson, NY 117771356017917
Common questions
What is Mark Edward Bertsch, FNP's NPI number?
Mark Edward Bertsch, FNP's National Provider Identifier (NPI) is 1649005620, issued on Sep 7, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Mark Edward Bertsch, FNP located?
The NPPES record lists a practice address at 200 Belle Terre RD, Port Jefferson, NY, 11777. Phone: (631) 474-6000. Providers update this record themselves, so call before visiting.
How can I verify Mark Edward Bertsch, FNP's license?
NPPES lists New York license number 354320, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity 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.