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DR. WILLIAM NOEL MARRERO LEON MD
NPI 1396356549
General Practice in Manati, PR

Active since August 12, 2020PECOS EnrolledAccepts Medicare Assignment
CALLE HERNANDES CARRION CARR #2, INTERCEPCION 668 URB ATENAS, MANATI, PR 00674(787) 621-3700(787) 621-3266 Get Directions Write a Review

NPPES record last updated: December 3, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 3, 2021, Aug 12, 2020 (2 updates tracked since 2020).

About Dr. William Noel Marrero Leon Md NPPES

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

DR. WILLIAM NOEL MARRERO LEON MD (NPI 1396356549) is an individual general practice provider in Manati, Puerto Rico, licensed in Puerto Rico (22410) and active in the NPI registry since August 2020. He is enrolled in Medicare PECOS and is a graduate of Other (2013).

NPPES Registry Identity

NPI1396356549
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. WILLIAM NOEL MARRERO LEONCredential: MD
Location AddressCALLE HERNANDES CARRION CARR #2, INTERCEPCION 668 URB ATENASManati, PR 00674-1142
Mailing AddressCalle Hernandes Carrion Carr #2, Intercepcion 668 Urb AtenasManati, PR 00674-1142 · (787) 621-3700 · Fax (787) 621-3266
Phone(787) 621-3700
Fax(787) 621-3266
Sole ProprietorYes
Medical School CMSOtherGraduated 2013
Enumeration DateAugust 12, 2020
Last NPPES UpdateDecember 3, 20212 updates tracked since enumeration
NPPES CertifiedSeptember 8, 2021
✔ NPI 1396356549 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyGeneral PracticeAllopathic & Osteopathic Physicians
Taxonomy Code208D00000X
Licenses✔ Licensed in PR · 22410✔ Licensed in PR · 15441
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 and accepts Medicare assignment

Dr. William Noel Marrero Leon 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 ID1557750353
PECOS Enrollment IDI20211117001078
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 William Marrero Leon reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Clinica Las Americas Guaynabo, Inc
General Practice
1 AVE CASA LINDA
Bayamon, PR 00959
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 75 clinicians in this Medicare group
NPI 1033508197 (787) 789-1996

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 William Marrero Leon's NPI number?

The NPI number for William Marrero Leon is 1396356549. It was assigned to this individual provider in the NPPES registry on August 12, 2020.

Where is William Marrero Leon located?

William Marrero Leon practices at Calle Hernandes Carrion Carr #2 Intercepcion 668 Urb Atenas, Manati, PR 00674. The listed phone number is (787) 621-3700.

What is William Marrero Leon's specialty?

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

Is William Marrero Leon enrolled in Medicare?

Yes. William Marrero Leon 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 organization bills Medicare for William Marrero Leon's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Marrero Leon reassigns Medicare benefits to Clinica Las Americas Guaynabo, 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 William Marrero Leon'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 William Marrero Leon was last updated on December 3, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.