1. Home
  2. Directory
  3. NPI Profile

DR. DEMIAN EMIL GRAU MD
NPI 1407310253
General Practice in Corozal, PR

Active since January 25, 2019PECOS Enrolled
CARR 891 KM 15.1, COROZAL, PR 00783(787) 859-2560 Get Directions Write a Review

NPPES record last updated: June 4, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 4, 2026, Jul 17, 2024, Mar 21, 2023 and 1 more (4 updates tracked since 2019).

About Dr. Demian Emil Grau Md NPPES

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

DR. DEMIAN EMIL GRAU MD (NPI 1407310253) is an individual general practice provider in Corozal, Puerto Rico, licensed in Puerto Rico (24013) and active in the NPI registry since January 2019. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1407310253
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. DEMIAN EMIL GRAUCredential: MD
Location AddressCARR 891 KM 15.1Corozal, PR 00783
Mailing Address1047 Calle 9 SeSan Juan, PR 00921-3124 · (787) 690-8895
Phone(787) 859-2560
Sole ProprietorYes
Enumeration DateJanuary 25, 2019
Last NPPES UpdateJune 4, 20264 updates tracked since enumeration
NPPES CertifiedJune 4, 2026
✔ NPI 1407310253 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
License✔ Licensed in PR · 24013
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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Demian Emil Grau Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignment

Medicare enrollment records show Demian Grau reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Salud Integral En La Montana, Inc.
Radiology
CARR 167 KM 17.8, BO. PAJAROS PUERTORRIQUENOS
Bayamon, PR 00961
  • Reassigned Medicare billing, Puerto Rico enrollment
  • Also billed through NPI 1013777622 (Puerto Rico)
  • 141 clinicians in this Medicare group
NPI 1306327341 (787) 869-5900

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

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SALUD INTEGRAL EN LA MONTANA, INC
Clinic/Center
CARR 891 KM 15.1, BO. PUEBLO
COROZAL, PR 00783
Corozal Municipio (787) 859-2560
SALUD INTEGRAL EN LA MONTANA, INC
Clinic/Center
CARR 891 KM 15.1, BO. PUEBLO
COROZAL, PR 00783
Corozal Municipio (787) 859-2560
SALUD INTEGRAL EN LA MONTANA, INC
Clinic/Center (Mental Health (Including Community Mental Health Center))
CARR 891 KM 15.1, BO PUEBLO
COROZAL, PR 00783
Corozal Municipio (787) 859-2560
DR. YANIRA MARIE TIRADO GONZALEZ PHARMD
Pharmacist
CARR 891 KM 15.1, BO PUEBLO
COROZAL, PR 00783
Corozal Municipio (787) 859-2560

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 Demian Grau's NPI number?

The NPI number for Demian Grau is 1407310253. It was assigned to this individual provider in the NPPES registry on January 25, 2019.

Where is Demian Grau located?

Demian Grau practices at Carr 891 Km 15.1, Corozal, PR 00783. The listed phone number is (787) 859-2560.

What is Demian Grau's specialty?

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

Is Demian Grau enrolled in Medicare?

Yes. Demian Grau is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Demian Grau's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Demian Grau reassigns Medicare benefits to Salud Integral En La Montana, Inc. (Bayamon, PR). The 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 Demian Grau's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Demian Grau was last updated on June 4, 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.