Dr Marian Isaak, MD in Holyoke, MA - Medicare Internal Medicine

Dr Marian Isaak, MD is a medicare enrolled "Internal Medicine" physician in Holyoke, Massachusetts. She graduated from medical school in 2021 and has 5 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice Western Mass Physician Associates Inc and her current practice location is 575 Beech St, Holyoke, Massachusetts. You can reach out to her office (for appointments etc.) via phone at (413) 534-2500.

Dr Marian Isaak is licensed to practice in Massachusetts (license number 1024101) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1083340004.

Contact Information

	Dr Marian Isaak, MD
	575 Beech St, Holyoke, MA 01040-2223
	(413) 534-2500
	Not Available

Map and Direction

Physician's Profile

Full Name	Dr Marian Isaak
Gender	Female
Speciality	Internal Medicine
Experience	5 Years
Location	575 Beech St, Holyoke, Massachusetts
Accepts Medicare Assignments	Yes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.

Medical Education and Training:

Dr Marian Isaak graduated from medical school in 2021

NPI Data:

NPI Number: 1083340004
Provider Enumeration Date: 08/01/2022
Last Update Date: 09/26/2025

Medicare PECOS Information:

PECOS PAC ID: 6305311838
Enrollment ID: I20260413000123

Medical Identifiers

Medical identifiers for Dr Marian Isaak such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1083340004	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	1024101 (Massachusetts)	Primary

Medical Facilities Affiliation

Facility Name	Location	Facility Type
Holyoke Medical Center	Holyoke, MA	Hospital
Baystate Medical Center	Springfield, MA	Hospital

Group Practice Association

Group Practice Name	Group PECOS PAC ID	No. of Members
Western Mass Physician Associates Inc	5799767109	71

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr Marian Isaak is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing Address	Practice Location Address
Dr Marian Isaak, MD 575 Beech St, Holyoke, MA 01040-2223 Ph: (203) 743-0100	Dr Marian Isaak, MD 575 Beech St, Holyoke, MA 01040-2223 Ph: (413) 534-2500

Reviews and Comments

Internal Medicine Doctors in Holyoke, MA

Dr. Amir Feroz Mohani, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 230 Maple St Ste 301, Holyoke, MA 01040 Phone: 413-534-1800 Fax: 413-534-1900
Vamseedhar Alla, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 575 Beech St, Holyoke, MA 01040 Phone: 413-534-2500
Thevenin Carl Henry Beauzile, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 230 Maple St, Holyoke, MA 01040 Phone: 413-420-2200
Alejandro Esparza-perez, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 230 Maple St Ste 1, Holyoke, MA 01040 Phone: 413-420-2200 Fax: 413-539-9472
Maria Gabriela Ponce Garcia, MD Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 230 Maple St Ste 1, Holyoke, MA 01040 Phone: 413-420-2200 Fax: 413-539-9472
Ana Mercedes Roca Mattei, M.D. Internal Medicine Medicare: Accepting Medicare Assignments Practice Location: 2 Hospital Dr., Suite 101 Western Mass Physician Associ, D/b/a: Holyoke Associaties In Internal Medicine, Holyoke, MA 01040 Phone: 413-536-8924 Fax: 413-532-9141

Dr Marian Isaak, MD - Medicare Internal Medicine in Holyoke, MA