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

Dr. Jeffrey Nascimento, DO

Individual provider Internal Medicine Physician · NPI 1235256934

Dr. Jeffrey Nascimento, DO is registered under Pulmonary Disease in Hartford, Connecticut. Graduated from University of New England, College of Osteo Medicine in 2002, 24 years ago. Practices with Hartford Healthcare Medical Group Specialists PLLC, a 1,537-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Connecticut.

Years since qualifying
24
Trained at
University of New England, College of Osteo Medicine
Licensed in
CT
In the registry since
2007
Specialties on file
4
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

85 Seymour St Ste 903
Hartford, CT 06106-5501
Phone: (860) 547-1876
Fax: (860) 520-1379
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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 046503 (CT)
Internal Medicine Physician Taxonomy 207R00000X · Licence 046503 (CT)
Critical Care Medicine (Internal Medicine) Physician Taxonomy 207RC0200X · Licence 046503 (CT)
Sleep Medicine (Internal Medicine) Physician Taxonomy 207RS0012X · Licence 046503 (CT)

Record details

NPI number1235256934
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedMarch 26, 2007
Last updated in NPPESApril 1, 2021
Certification dateApril 1, 2021

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesCRITICAL CARE (INTENSIVISTS), SLEEP MEDICINE
Medical schoolUNIVERSITY OF NEW ENGLAND, COLLEGE OF OSTEO MEDICINE
Graduated 2002 (24 years in practice)
Group practice Hartford Healthcare Medical Group Specialists Pllc — 1537 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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 patients451
Services billed 871 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

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.

Honoraria $4,726 2 payments
Food and Beverage $2,830 137 payments · a meal or drink at a meeting or visit, not a fee
Travel and Lodging $49 1 payment · travel or lodging paid or reimbursed, such as to attend a conference

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 Hartford Healthcare Medical Group Specialists PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1537 clinicians in the practice; 12 are shown here.

Other providers in Hartford