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DR. IVAN AUGUSTO RIVERA NAZARIO MD
NPI 1124554449
Internal Medicine - Endocrinology, Diabetes & Metabolism in San Juan, PR

Active since May 05, 2017PECOS Enrolled
HOSPITAL MUNICIPAL DE SAN JUAN BARRIO MONACILLO, CENTRO MEDICO DE PUERTO RICO, SAN JUAN, PR 00928(787) 480-0000 Get Directions Write a Review

NPPES record last updated: August 1, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Aug 1, 2024, Jan 27, 2023, Aug 24, 2020 and 2 more (5 updates tracked since 2018).

About Dr. Ivan Augusto Rivera Nazario Md NPPES

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

DR. IVAN AUGUSTO RIVERA NAZARIO MD (NPI 1124554449) is an individual endocrinology, diabetes & metabolism provider in San Juan, Puerto Rico, licensed in Puerto Rico (21051) and active in the NPI registry since May 2017. He is enrolled in Medicare PECOS, is affiliated with Doctor's Center De San Juan, and is a graduate of Other (2016).

NPPES Registry Identity

NPI1124554449
Entity TypeIndividualMale
Primary Taxonomy207RE0101X
Provider Legal NameDR. IVAN AUGUSTO RIVERA NAZARIOCredential: MD
Location AddressHOSPITAL MUNICIPAL DE SAN JUAN BARRIO MONACILLO, CENTRO MEDICO DE PUERTO RICOSan Juan, PR 00928
Mailing AddressPo Box 191811San Juan, PR 00919-1811 · (787) 763-4149
Phone(787) 480-0000
Sole ProprietorYes
Medical School CMSOtherGraduated 2016
Enumeration DateMay 5, 2017
Last NPPES UpdateAugust 1, 20245 updates tracked since enumeration
NPPES CertifiedJuly 29, 2023
✔ NPI 1124554449 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in PR · 21051
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Ivan Augusto Rivera Nazario Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID2062755184
PECOS Enrollment IDI20190513001964
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

3

Medicare enrollment records show Ivan Rivera Nazario reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Centro Medico Del Turabo Inc
Multi-Specialty
HIMA SAN PABLO CAGUAS, URB MARIOLGA #100 AVE LUIS MUNOZ MARIN
Caguas, PR 00725
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 428 clinicians in this Medicare group
NPI 1710107883 (787) 653-3434
Nieves Internal Medicine Health
Internal Medicine
100 AVE LUIS MUNOZ MARIN
Caguas, PR 00725
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 12 clinicians in this Medicare group
NPI 1982339057 (787) 653-3108
Rn Endocrinology LLC
Endocrinology, Diabetes & Metabolism
1507 AVE PONCE DE LEON APT 205
San Juan, PR 00909
  • Reassigned Medicare billing, Puerto Rico enrollment
NPI 1760283832 (787) 579-3028

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 2

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

Doctor's Center De San Juan

Acute Care Hospitals · San Juan, PR
OwnershipProprietary
CMS Certification Number400006
Location1395 Calle San Rafael Parada 20San Juan, PR 00909 · San Juan County
Emergency services

Hospital Pavia Caguas

Acute Care Hospitals · Caguas, PR
OwnershipProprietary
CMS Certification Number400120
LocationUrb Mariolga 100 Ave Luis Munoz MarinCaguas, PR 00725 · Caguas County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 00928 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$130.65 typical visit price
range $56.86 – $172.44
Typical copayment $32.66 (range $14.21 – $43.11)
Most-billed visit code 99204
Established Patient
$100.24 typical visit price
range $18.24 – $140.44
Typical copayment $25.06 (range $4.56 – $35.11)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Ivan Rivera Nazario's NPI number?

The NPI number for Ivan Rivera Nazario is 1124554449. It was assigned to this individual provider in the NPPES registry on May 5, 2017.

Where is Ivan Rivera Nazario located?

Ivan Rivera Nazario practices at Hospital Municipal De San Juan Barrio Monacillo Centro Medico De Puerto Rico, San Juan, PR 00928. The listed phone number is (787) 480-0000.

What is Ivan Rivera Nazario's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Ivan Rivera Nazario enrolled in Medicare?

Yes. Ivan Rivera Nazario is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Ivan Rivera Nazario's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ivan Rivera Nazario reassigns Medicare benefits to 3 organizations: Centro Medico Del Turabo Inc (Caguas, PR), Nieves Internal Medicine Health (Caguas, PR) and Rn Endocrinology LLC (San Juan, PR). 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 Ivan Rivera Nazario's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ivan Rivera Nazario affiliated with any hospitals?

According to CMS data, Ivan Rivera Nazario is affiliated with Doctor's Center De San Juan and Hospital Pavia Caguas.

When was this NPI record last updated?

The NPPES record for Ivan Rivera Nazario was last updated on August 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.