MARK A WEISS MD
NPI 1699857508
Internal Medicine - Medical Oncology in Philadelphia, PA

Q: What is Mark Weiss's NPI number?

The NPI number for Mark Weiss is 1699857508. It was assigned to this individual provider in the NPPES registry on October 19, 2006.

Q: What is Mark Weiss's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Mark Weiss was last updated on October 6, 2011. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since October 19, 2006

925 CHESTNUT ST, SUITE 320A, PHILADELPHIA, PA 19107(215) 955-8874(215) 955-2340 Get Directions Write a Review

NPPES record last updated: October 6, 2011. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About Mark A Weiss Md NPPES

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

MARK A WEISS MD (NPI 1699857508) is an individual medical oncology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD438863) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1699857508

Entity TypeIndividualMale

Primary Taxonomy207RX0202X

Provider Legal NameMARK A WEISSCredential: MD

Location Address925 CHESTNUT ST, SUITE 320APhiladelphia, PA 19107-4216

Mailing Address925 Chestnut St, Suite 320aPhiladelphia, PA 19107-4216

Phone(215) 955-8874

Fax(215) 955-2340

Sole ProprietorNo

Enumeration DateOctober 19, 2006

Last NPPES UpdateOctober 6, 2011

✔ NPI 1699857508 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians

Taxonomy Code207RX0202X

License✔ Licensed in PA · MD438863

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 MedicineTaxonomy 207R00000X · License MD438863 (PA)

Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License MD438863 (PA)

925 CHESTNUT ST, Philadelphia, PA 19107

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