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MARSHALL NATHAN LASSMAN MD
NPI 1629040357
Internal Medicine - Endocrinology, Diabetes & Metabolism in Hartford, CT

Active since February 06, 2006
1000 ASYLUM AVE, STE 4310, HARTFORD, CT 06105(860) 247-2137(860) 728-0480 Get Directions Write a Review

NPPES record last updated: March 7, 2023. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Mar 7, 2023, Oct 18, 2017 (2 updates tracked since 2017).

About Marshall Nathan Lassman Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARSHALL NATHAN LASSMAN MD (NPI 1629040357) is an individual endocrinology, diabetes & metabolism provider in Hartford, Connecticut, licensed in Connecticut (0015106) and active in the NPI registry since February 2006.

NPPES Registry Identity

NPI1629040357
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameMARSHALL NATHAN LASSMANCredential: MD
Location Address1000 ASYLUM AVE, STE 4310Hartford, CT 06105-1770
Mailing Address263 Farmington AveFarmington, CT 06030-0001 · (860) 679-3245 · Fax (860) 679-0121
Phone(860) 247-2137
Fax(860) 728-0480
Sole ProprietorNo
Enumeration DateFebruary 6, 2006
Last NPPES UpdateMarch 7, 20232 updates tracked since enumeration
✔ NPI 1629040357 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
Licenses✔ Licensed in CT · 0015106✔ Licensed in CT · 015106
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
Also ListedInternal MedicineTaxonomy 207R00000X · License 015106 (CT)
1000 ASYLUM AVE, Hartford, CT 06105
Open in Google Maps ↗

Other Identifiers 3

Other010015106CT01CT · Bcbs
Medicaid001151067CT
Other015106CT · Medical License

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BRUCE CHOZIK MD PC
Neurological Surgery
1000 ASYLUM AVE, SUITE 2107A
HARTFORD, CT 06105
Capitol Planning Region (860) 724-7002
DEBORAH MCGRATH APRN/FNP
Nurse Practitioner (Family)
1000 ASYLUM AVE
HARTFORD, CT 06105
Capitol Planning Region (860) 714-4786
MR. HECTOR J MALDONADO RDH
Dental Hygienist
1000 ASYLUM AVE, SUITE 3200
HARTFORD, CT 06105
Capitol Planning Region (860) 714-4990
SARAH MARIE RABBETT APRN-BC
Nurse Practitioner (Family)
1000 ASYLUM AVE, SUITE 43020
HARTFORD, CT 06105
Capitol Planning Region (860) 714-5237
PAYAL RATH MD
Internal Medicine (Infectious Disease)
1000 ASYLUM AVE, SUITE 4304
HARTFORD, CT 06105
Capitol Planning Region (860) 714-5895
HOWARD ANDREW SHAW MD, MBA
Obstetrics & Gynecology
1000 ASYLUM AVE, SUITE 2110
HARTFORD, CT 06105
Capitol Planning Region (860) 714-7945
MARK WOLF MD
Obstetrics & Gynecology
1000 ASYLUM AVE, SUITE 4319
HARTFORD, CT 06105
Capitol Planning Region (860) 714-4440
DR. H. ROBERT SILVERSTEIN M.D. FACC
Specialist
1000 ASYLUM AVE, #2109
HARTFORD, CT 06105
Capitol Planning Region (860) 549-3444

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Marshall Lassman's NPI number?

The NPI number for Marshall Lassman is 1629040357. It was assigned to this individual provider in the NPPES registry on February 6, 2006.

Where is Marshall Lassman located?

Marshall Lassman practices at 1000 Asylum Ave Ste 4310, Hartford, CT 06105. The listed phone number is (860) 247-2137.

What is Marshall Lassman's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

When was this NPI record last updated?

The NPPES record for Marshall Lassman was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.