Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Erik Nielsen

Individual provider Pulmonary Disease Physician · NPI 1669904942

Erik Nielsen is registered under Pulmonary Disease in Stamford, Connecticut. Graduated from State University of New York at Stony Brook, School of Medicine in 2017, 9 years ago. Practices with Stamford Health Medical Group Inc, a 432-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
9
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
CT
In the registry since
2017
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Practice location Address checks out

29 Hospital Plz Ste 505
Stamford, CT 06902-3602
Phone: (203) 348-2437
Fax: (203) 276-7243
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pulmonary Disease Physician (primary) Taxonomy 207RP1001X · Licence 75135 (CT)

Record details

NPI number1669904942
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 28, 2017
Last updated in NPPESJuly 18, 2023
Certification dateJuly 18, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPULMONARY DISEASE
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Stamford Health Medical Group Inc — 432 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients489
Services billed 1,029 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $50 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Stamford Health Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 432 clinicians in the practice; 12 are shown here.

Other providers in Stamford