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DR. GUILLERMO A PAGAN CALO M.D.
NPI 1891821815
General Practice in Hormigueros, PR

Active since February 26, 2007PECOS EnrolledAccepts Medicare Assignment
PLAZA CONSTANCIA SEGUNDO PISO, HORMIGUEROS, PR 00660(787) 849-3845(787) 849-3845 Get Directions Write a Review

NPPES record last updated: October 1, 2012. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. Guillermo A Pagan Calo M.d. NPPES

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

DR. GUILLERMO A PAGAN CALO M.D. (NPI 1891821815) is an individual general practice provider in Hormigueros, Puerto Rico, licensed in Puerto Rico (14386) and active in the NPI registry since February 2007. He is enrolled in Medicare PECOS, is affiliated with Bella Vista Hospital, and is a graduate of Other (2000).

NPPES Registry Identity

NPI1891821815
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. GUILLERMO A PAGAN CALOCredential: M.D.
Location AddressPLAZA CONSTANCIA SEGUNDO PISOHormigueros, PR 00660
Mailing AddressPmb 154 Po Box 5103Cabo Rojo, PR 00623 · (787) 384-6716 · Fax (787) 849-3845
Phone(787) 849-3845
Fax(787) 849-3845
Sole ProprietorYes
Medical School CMSOtherGraduated 2000
Enumeration DateFebruary 26, 2007
Last NPPES UpdateOctober 1, 2012
✔ NPI 1891821815 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 · 14386
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

Other Identifiers 1

Medicare ID-Type Unspecified22950PR

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Guillermo A Pagan Calo M.d. 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 ID6305897901
PECOS Enrollment IDI20050201000398
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 Reassignments

2

Medicare enrollment records show Guillermo Pagan Calo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Bella Vista Hospital Inc
General Acute Care Hospital
CARR 349 KM 2.7, CERRO LAS MESAS
Mayaguez, PR 00680
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 55 clinicians in this Medicare group
NPI 1083636179 (787) 834-6000
Cindy L Martinez Torres MD PA PLLC
General Practice
1281 NW 6TH ST
Miami, FL 33125
  • Reassigned Medicare billing, Florida enrollment
  • 2 clinicians in this Medicare group
NPI 1508241175 (786) 615-3919

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

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Bella Vista Hospital

Acute Care Hospitals · Mayaguez, PR
OwnershipVoluntary non-profit - Church
CMS Certification Number400014
LocationCarr 349 Km 2 7 Cerro Las MesasMayaguez, PR 00681 · Mayaguez County
Emergency services

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 Guillermo Pagan Calo's NPI number?

The NPI number for Guillermo Pagan Calo is 1891821815. It was assigned to this individual provider in the NPPES registry on February 26, 2007.

Where is Guillermo Pagan Calo located?

Guillermo Pagan Calo practices at Plaza Constancia Segundo Piso, Hormigueros, PR 00660. The listed phone number is (787) 849-3845.

What is Guillermo Pagan Calo's specialty?

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

Is Guillermo Pagan Calo enrolled in Medicare?

Yes. Guillermo Pagan Calo is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Guillermo Pagan Calo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Guillermo Pagan Calo reassigns Medicare benefits to 2 organizations: Bella Vista Hospital Inc (Mayaguez, PR) and Cindy L Martinez Torres MD PA PLLC (Miami, FL). Each 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 Guillermo Pagan Calo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Guillermo Pagan Calo affiliated with any hospitals?

According to CMS data, Guillermo Pagan Calo is affiliated with Bella Vista Hospital.

When was this NPI record last updated?

The NPPES record for Guillermo Pagan Calo was last updated on October 1, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.