1. Home
  2. Directory
  3. California
  4. El Centro
  5. Anesthesiology
  6. NPI Profile

FOUR MAC INC
NPI 1336091719
Anesthesiology in El Centro, CA

Active since February 10, 2026
1415 ROSS AVE, EL CENTRO, CA 92243(760) 339-7100 Get Directions Write a Review

NPPES record last updated: February 10, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Four Mac Inc NPPES

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

FOUR MAC INC (NPI 1336091719) is a healthcare organization registered as an anesthesiology in El Centro, California and active in the NPI registry since February 2026. The organization lists Timothy P Mcgrath, Owner/physician, as its authorized official.

NPPES Registry Identity

NPI1336091719
Entity TypeOrganization
Primary Taxonomy207L00000X
Legal Business NameFOUR MAC INC
Location Address1415 ROSS AVEEl Centro, CA 92243-4306
Mailing AddressPo Box 568Muncie, IN 47308-0568 · (765) 284-0493 · Fax (765) 284-2434
Phone(760) 339-7100
Organization SubpartNo
Authorized OfficialTimothy P McgrathOwner/physician · (904) 742-7286
Enumeration DateFebruary 10, 2026
NPPES CertifiedFebruary 10, 2026
✔ NPI 1336091719 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
1415 ROSS AVE, El Centro, CA 92243
Open in Google Maps ↗

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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Four Mac Inc 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 Four Mac Inc, which bills Medicare for the services this clinician delivers.

Clinician (1)

Timothy Mcgrath, M.D.
Anesthesiology
NPI 1922067891
2185 CITRACADO PKWY
Escondido, CA 92029
(442) 281-5000
✔ PECOS✔ Accepts Medicare93 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 Four Mac Inc's NPI number?

The NPI number for Four Mac Inc is 1336091719. It was assigned to this organization in the NPPES registry on February 10, 2026.

Where is Four Mac Inc located?

Four Mac Inc is located at 1415 Ross Ave, El Centro, CA 92243. The listed phone number is (760) 339-7100.

What is Four Mac Inc's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Four Mac Inc enrolled in Medicare?

Yes. Four Mac Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Four Mac Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Anesthesiology) reassigns their Medicare billing to Four Mac Inc. 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.

When was this NPI record last updated?

The NPPES record for Four Mac Inc was last updated on February 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.