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HEATHER WARK MD LLC
NPI 1871015750
Internal Medicine in Northampton, MA

Active since July 12, 2017
548 ELM ST, NORTHAMPTON, MA 01060(413) 586-2832 Get Directions Write a Review

NPPES record last updated: April 30, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 30, 2026, Jul 12, 2017 (2 updates tracked since 2017).

About Heather Wark Md Llc NPPES

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

HEATHER WARK MD LLC (NPI 1871015750) is a healthcare organization registered as an internal medicine in Northampton, Massachusetts and active in the NPI registry since July 2017. The organization lists Heather Wark, Owner, as its authorized official.

NPPES Registry Identity

NPI1871015750
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameHEATHER WARK MD LLC
Location Address548 ELM STNorthampton, MA 01060-2832
Mailing Address145 Vernon StNorthampton, MA 01060-2818
Phone(413) 586-2832
Organization SubpartNo
Authorized OfficialHeather WarkOwner · (413) 237-4933
Enumeration DateJuly 12, 2017
Last NPPES UpdateApril 30, 20262 updates tracked since enumeration
NPPES CertifiedApril 30, 2026
✔ NPI 1871015750 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
548 ELM ST, Northampton, MA 01060
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Heather Wark Md Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

3

Medicare enrollment records show 3 clinicians reassign Medicare billing to Heather Wark MD LLC, which bills Medicare for the services they deliver. Of these, 2 practice within 10 miles. They are listed nearest first.

Clinicians, nearest first (3)

Heather Wark, MD
Internal Medicine
NPI 1063422749
548 ELM ST
Northampton, MA 01060
(413) 586-3150
✔ PECOS✔ Accepts Medicare0.1 mi
Gina Lord, NP-C
Nurse Practitioner
NPI 1942714043
38 MULBERRY ST
Leeds, MA 01053
(413) 727-3882
✔ PECOS✔ Accepts Medicare2.9 mi
Laura Morris, F.N.P.
Nurse Practitioner
NPI 1982769048
40 WRIGHT STREET
Palmer, MA 01069
(413) 284-5400
✔ PECOS✔ Accepts Medicare20 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Heather Wark MD LLC's NPI number?

The NPI number for Heather Wark MD LLC is 1871015750. It was assigned to this organization in the NPPES registry on July 12, 2017.

Where is Heather Wark MD LLC located?

Heather Wark MD LLC is located at 548 Elm St, Northampton, MA 01060. The listed phone number is (413) 586-2832.

What is Heather Wark MD LLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Heather Wark MD LLC enrolled in Medicare?

Yes. Heather Wark MD LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Heather Wark MD LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Heather Wark MD LLC, in Internal Medicine and Nurse Practitioner. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 2 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Heather Wark MD LLC accept?

Health plans from Anthem Blue Cross and Blue Shield list Heather Wark MD LLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Heather Wark MD LLC was last updated on April 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.