WILLIAM DEMARCO DO
NPI 1124103577
Internal Medicine in Great Barrington, MA

Q: What is William Demarco's NPI number?

The NPI number for William Demarco is 1124103577. It was assigned to this individual provider in the NPPES registry on October 26, 2006.

Q: What is William Demarco's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for William Demarco was last updated on January 24, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since October 26, 2006PECOS EnrolledAccepts Medicare Assignment

29 LEWIS AVE, GREAT BARRINGTON, MA 01230(413) 496-6820(413) 496-6821 Get Directions Write a Review

NPPES record last updated: January 24, 2008. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About William Demarco Do NPPES

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

WILLIAM DEMARCO DO (NPI 1124103577) is an individual internal medicine provider in Great Barrington, Massachusetts, licensed in Massachusetts (59492) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of University Of New England, College Of Osteo Medicine (1984).

NPPES Registry Identity

NPI1124103577

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameWILLIAM DEMARCOCredential: DO

Location Address29 LEWIS AVEGreat Barrington, MA 01230

Mailing Address725 North StreetPittsfield, MA 01201 · (413) 496-6820 · Fax (413) 496-6821

Phone(413) 496-6820

Fax(413) 496-6821

Sole ProprietorNo

Medical School CMSUniversity Of New England, College Of Osteo MedicineGraduated 1984

Enumeration DateOctober 26, 2006

Last NPPES UpdateJanuary 24, 2008

✔ NPI 1124103577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in MA · 59492

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.

29 LEWIS AVE, Great Barrington, MA 01230

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Other Identifiers 3

Medicare UPINE34190

Medicaid3045161MA

Medicare ID-Type UnspecifiedJ08055MA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Demarco Do is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7315920097

PECOS Enrollment IDI20040611001446

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01230 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$134.47 typical visit price

range $58.86 – $177.36

Typical copayment $33.61 (range $14.71 – $44.34)

Most-billed visit code 99204

Established Patient

$103.48 typical visit price

range $19.11 – $144.84

Typical copayment $25.87 (range $4.77 – $36.21)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

DR. KERSTIN L. VOSS MD

Hospitalist