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MAC PHYSICIANS LLC
NPI 1699108951
General Practice in Hockessin, DE

Active since August 09, 2013
5936 LIMESTONE RD STE 301B, HOCKESSIN, DE 19707(302) 235-8808(302) 235-8808 Get Directions Write a Review

NPPES record last updated: July 29, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jul 29, 2026, Dec 4, 2023, Sep 5, 2018 (3 updates tracked since 2018).

About Mac Physicians Llc NPPES

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

MAC PHYSICIANS LLC (NPI 1699108951) is a healthcare organization registered as a general practice in Hockessin, Delaware and active in the NPI registry since August 2013. The organization maintains a secondary practice location in Newtown and lists Vincent E Schaller, Provider, as its authorized official.

NPPES Registry Identity

NPI1699108951
Entity TypeOrganization
Primary Taxonomy208D00000X
Legal Business NameMAC PHYSICIANS LLC
Location Address5936 LIMESTONE RD STE 301BHockessin, DE 19707-8932
Mailing Address1205 Kinterra CtWest Chester, PA 19382-6976 · (302) 235-8808 · Fax (302) 351-8769
Phone(302) 235-8808
Fax(302) 235-8808
Organization SubpartNo
Authorized OfficialVincent E SchallerProvider · (302) 235-8808
Enumeration DateAugust 9, 2013
Last NPPES UpdateJuly 29, 20263 updates tracked since enumeration
NPPES CertifiedJuly 29, 2026
✔ NPI 1699108951 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
Definition
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions. Source: National Uniform Claim Committee
Also ListedSpecialistTaxonomy 174400000X · License C10004737 (DE)
5936 LIMESTONE RD STE 301B, Hockessin, DE 19707
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Secondary Practice Location 1

Location 1638 Newtown Yardley RdNewtown, PA 18940-1758 · Phone (302) 235-8808 · Fax (302) 235-8815

Other Identifiers 2

Medicaid1012007330059PA
Medicaid250428609DE

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Highmark Blue Cross Blue Shield Delaware.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)

Mac Physicians Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Mac Physicians LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Vincent Schaller, MD
Family Practice
NPI 1730180696
5936 LIMESTONE RD STE 301B
Hockessin, DE 19707
(302) 234-4000
✔ PECOS✔ Accepts MedicareSame address

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 Mac Physicians LLC's NPI number?

The NPI number for Mac Physicians LLC is 1699108951. It was assigned to this organization in the NPPES registry on August 9, 2013.

Where is Mac Physicians LLC located?

Mac Physicians LLC is located at 5936 Limestone Rd Ste 301B, Hockessin, DE 19707. The listed phone number is (302) 235-8808.

What is Mac Physicians LLC's specialty?

The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.

Is Mac Physicians LLC enrolled in Medicare?

Yes. Mac Physicians LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Mac Physicians LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Family Practice) reassigns their Medicare billing to Mac Physicians LLC. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Mac Physicians LLC accept?

Health plans from Highmark Blue Cross Blue Shield Delaware list Mac Physicians 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 Mac Physicians LLC was last updated on July 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.