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TERESA PILAR DEL RIO MONTESINOS MD
NPI 1154979235
Internal Medicine - Hepatology in Mayaguez, PR

Active since August 31, 2019PECOS Enrolled
55 CALLE VIRGINIA, MAYAGUEZ, PR 00680(787) 834-6985 Get Directions Write a Review

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 14, 2026, Jun 4, 2024, Jun 5, 2023 and 2 more (5 updates tracked since 2019).

About Teresa Pilar Del Rio Montesinos Md NPPES

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

TERESA PILAR DEL RIO MONTESINOS MD (NPI 1154979235) is an individual hepatology provider in Mayaguez, Puerto Rico, licensed in Puerto Rico (23834) and active in the NPI registry since August 2019. She is enrolled in Medicare PECOS and maintains a secondary practice location in Seattle.

NPPES Registry Identity

NPI1154979235
Entity TypeIndividualFemale
Primary Taxonomy207RI0008X
Provider Legal NameTERESA PILAR DEL RIO MONTESINOSCredential: MD
Location Address55 CALLE VIRGINIAMayaguez, PR 00680-3820
Mailing Address1100 9th AveSeattle, WA 98101-2756 · (206) 223-2319
Phone(787) 834-6985
Sole ProprietorYes
Enumeration DateAugust 31, 2019
Last NPPES UpdateJanuary 14, 20265 updates tracked since enumeration
NPPES CertifiedJanuary 14, 2026
✔ NPI 1154979235 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · HepatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RI0008X
Licenses✔ Licensed in PR · 23834✔ Licensed in WA · MD61409664
Definition
The discipline of Hepatology encompasses the structure, function, and diseases of the liver and biliary tract. The American Board of Internal Medicine considers Hepatology part of the subspecialty of gastroenterology. Physicians who identify themselves as Hepatologists usually, but not always, have been trained in gastrointestinal programs.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD.MD.61409664 (WA), 23834 (PR)

Secondary Practice Location 1

Location 11100 9th AveSeattle, WA 98101-2756 · Phone (206) 223-2319

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Teresa Pilar Del Rio Montesinos Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Teresa Del Rio Montesinos reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Signify Health Medical Associates, PLLC
General Practice
4055 VALLEY VIEW LN STE 700
Dallas, TX 75244
  • Reassigned Medicare billing, Washington enrollment
  • 317 clinicians in this Medicare group
NPI 1750845863 (972) 715-3800
Virginia Mason Medical Center
Gastroenterology
1100 9TH AVE
Seattle, WA 98101
  • Reassigned Medicare billing, Washington enrollment
  • 1,021 clinicians in this Medicare group
NPI 1003970989 (206) 223-6600

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
153 services89 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
61 services47 patients

Other Providers at the Same Location NPPES 2

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

RDF,CSP
General Practice
55 CALLE VIRGINIA
MAYAGUEZ, PR 00680
Mayagüez Municipio (787) 834-6985
JOSE M DEL RIO FERRER MD
Internal Medicine
55 CALLE VIRGINIA
MAYAGUEZ, PR 00680
Mayagüez Municipio (787) 834-6985

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 Teresa Del Rio Montesinos's NPI number?

The NPI number for Teresa Del Rio Montesinos is 1154979235. It was assigned to this individual provider in the NPPES registry on August 31, 2019.

Where is Teresa Del Rio Montesinos located?

Teresa Del Rio Montesinos practices at 55 Calle Virginia, Mayaguez, PR 00680. The listed phone number is (787) 834-6985.

What is Teresa Del Rio Montesinos's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hepatology, with taxonomy code 207RI0008X.

Is Teresa Del Rio Montesinos enrolled in Medicare?

Yes. Teresa Del Rio Montesinos is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Teresa Del Rio Montesinos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Teresa Del Rio Montesinos reassigns Medicare benefits to 2 organizations: Signify Health Medical Associates, PLLC (Dallas, TX) and Virginia Mason Medical Center (Seattle, WA). 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 Teresa Del Rio Montesinos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Teresa Del Rio Montesinos accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Teresa Del Rio Montesinos as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Teresa Del Rio Montesinos was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.