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DR. JUAN OSCAR RIVERA M.D.
NPI 1184859001
General Practice in Mayaguez, PR

Active since May 20, 2009PECOS EnrolledAccepts Medicare Assignment
76 CALLE TENERIFE, URB. SULTANA, MAYAGUEZ, PR 00680(787) 422-2059(787) 856-5326 Get Directions Write a Review

NPPES record last updated: May 20, 2009. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Juan Oscar Rivera M.d. NPPES

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

DR. JUAN OSCAR RIVERA M.D. (NPI 1184859001) is an individual general practice provider in Mayaguez, Puerto Rico, licensed in Puerto Rico (17554) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2007).

NPPES Registry Identity

NPI1184859001
Entity TypeIndividualMale
Primary Taxonomy208D00000X
Provider Legal NameDR. JUAN OSCAR RIVERACredential: M.D.
Location Address76 CALLE TENERIFE, URB. SULTANAMayaguez, PR 00680-1462
Mailing Address76 Calle Tenerife, Urb. SultanaMayaguez, PR 00680-1462 · (787) 422-2059 · Fax (787) 856-5326
Phone(787) 422-2059
Fax(787) 856-5326
Sole ProprietorYes
Medical School CMSOtherGraduated 2007
Enumeration DateMay 20, 2009
✔ NPI 1184859001 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 · 17554
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
76 CALLE TENERIFE, Mayaguez, PR 00680
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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. Juan Oscar Rivera 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 ID1850616889
PECOS Enrollment IDI20150213000666
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 Juan Rivera reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mayaguez Medical Center Dr Ramon Emeterio Betances Inc
2.0 mi
General Acute Care Hospital
AVE HOSTOS, #410
Mayaguez, PR 00682
  • Reassigned Medicare billing, Puerto Rico enrollment
  • 19 clinicians in this Medicare group
NPI 1013140383 (787) 652-9200

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Emergency department visit with low level of medical decision making 99283
An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.
264 services211 patients
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only 93010
A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.
173 services106 patients

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 Juan Rivera's NPI number?

The NPI number for Juan Rivera is 1184859001. It was assigned to this individual provider in the NPPES registry on May 20, 2009.

Where is Juan Rivera located?

Juan Rivera practices at 76 Calle Tenerife Urb. Sultana, Mayaguez, PR 00680. The listed phone number is (787) 422-2059.

What is Juan Rivera's specialty?

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

Is Juan Rivera enrolled in Medicare?

Yes. Juan Rivera 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 Juan Rivera's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Juan Rivera reassigns Medicare benefits to Mayaguez Medical Center Dr Ramon Emeterio Betances Inc (Mayaguez, 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 Juan Rivera'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 Juan Rivera was last updated on May 20, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.