DR. GUILLERMO J PASTRANA MAISONET MD
NPI 1124307814
General Practice in San Juan, PR

Active since August 11, 2011PECOS EnrolledAccepts Medicare Assignment
505 AVE HOSTOS, SAN JUAN, PR 00918(787) 902-6631(787) 339-2700 Get Directions Write a Review

NPPES record last updated: January 25, 2024. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. Guillermo J Pastrana Maisonet Md NPPES

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

DR. GUILLERMO J PASTRANA MAISONET MD (NPI 1124307814) is an individual general practice provider in San Juan, Puerto Rico, licensed in Puerto Rico (18300) and active in the NPI registry since August 2011. He is enrolled in Medicare PECOS and is a graduate of Other (2008).

NPPES Registry Identity

NPI1124307814
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. GUILLERMO J PASTRANA MAISONETCredential: MD
Location Address505 AVE HOSTOSSan Juan, PR 00918-3201
Mailing AddressPo Box 8578San Juan, PR 00910-0578 · (787) 488-0292 · Fax (939) 355-0129
Fax(787) 339-2700
Sole ProprietorYes
Medical School CMSOtherGraduated 2008
Enumeration DateAugust 11, 2011
Last NPPES UpdateJanuary 25, 2024
NPPES CertifiedJanuary 25, 2024
NPI 1124307814 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 · 18300
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

Other18300PR · Pr Medical License Number

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

Dr. Guillermo J Pastrana Maisonet Md 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 ID5991976714
PECOS Enrollment IDI20110927000300
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.

Other Providers at the Same Location NPPES 6

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

Surgery
505 AVE HOSTOS
SAN JUAN, PR 00918
Specialist
505 AVE HOSTOS
SAN JUAN, PR 00918
General Practice
505 AVE HOSTOS
SAN JUAN, PR 00918
Surgery
505 AVE HOSTOS
SAN JUAN, PR 00918
Surgery
505 AVE HOSTOS
SAN JUAN, PR 00918
Physician Assistant (Medical)
505 AVE HOSTOS
SAN JUAN, PR 00918

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 Pastrana Maisonet's NPI number?

The NPI number for Guillermo Pastrana Maisonet is 1124307814. It was assigned to this individual provider in the NPPES registry on August 11, 2011.

Where is Guillermo Pastrana Maisonet located?

Guillermo Pastrana Maisonet practices at 505 Ave Hostos, San Juan, PR 00918. The listed phone number is (787) 902-6631.

What is Guillermo Pastrana Maisonet's specialty?

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

Is Guillermo Pastrana Maisonet enrolled in Medicare?

Yes. Guillermo Pastrana Maisonet 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.

When was this NPI record last updated?

The NPPES record for Guillermo Pastrana Maisonet was last updated on January 25, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.