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PETER WAYNE MARKS MD
NPI 1366479412
Internal Medicine - Medical Oncology in New Haven, CT

Active since June 26, 2006
800 HOWARD AVE, YALE PHYSICIANS BLDG, NEW HAVEN, CT 06519(203) 785-2140(203) 785-6414 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Peter Wayne Marks Md NPPES

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

PETER WAYNE MARKS MD (NPI 1366479412) is an individual medical oncology provider in New Haven, Connecticut, licensed in Connecticut (044140) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1366479412
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NamePETER WAYNE MARKSCredential: MD
Location Address800 HOWARD AVE, YALE PHYSICIANS BLDGNew Haven, CT 06519-1369
Mailing Address300 George St, Po Box 9805New Haven, CT 06536-0805 · (203) 785-7998 · Fax (203) 785-6414
Phone(203) 785-2140
Fax(203) 785-6414
Sole ProprietorNo
Enumeration DateJune 26, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1366479412 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in CT · 044140
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License 004140 (CT)
800 HOWARD AVE, New Haven, CT 06519
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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.

MS. PAULA M. TORTORICI-SCHEFF FNP
Nurse Practitioner (Family)
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-4242
GERARD ANDREW BETRO MD
Surgery
800 HOWARD AVE, YALE PHYSICIANS BLDG
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2140
ALEXA BLOOD APRN
Nurse Practitioner
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2565
MICHAEL DIGIOVANNA MD
Internal Medicine (Medical Oncology)
800 HOWARD AVE, YALE PHYSICIANS BUILDING - 2ND FLOOR
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 688-4191
HELENA TERESA CHMIELOWICZ APRN
Clinical Nurse Specialist (Gerontology)
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2140
DR. MARC LEWIS ROSEN MD
Physical Medicine & Rehabilitation
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2579
MICHELE ANNE GOYETTE -EWING PHD
Psychologist (Clinical Child & Adolescent)
800 HOWARD AVE, YALE PHYSICIANS BLDG
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (203) 785-2140
UZMA USMAN MD
Psychiatry & Neurology (Neuromuscular Medicine)
800 HOWARD AVE
NEW HAVEN, CT 06519
South Central Connecticut Planning Region (999) 999-9999

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 Peter Marks's NPI number?

The NPI number for Peter Marks is 1366479412. It was assigned to this individual provider in the NPPES registry on June 26, 2006.

Where is Peter Marks located?

Peter Marks practices at 800 Howard Ave Yale Physicians Bldg, New Haven, CT 06519. The listed phone number is (203) 785-2140.

What is Peter Marks's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

When was this NPI record last updated?

The NPPES record for Peter Marks was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.