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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARIELLA HILLEBRAND MD
NPI 1639465461
Physical Medicine & Rehabilitation - Brain Injury Medicine in Bayamon, PR

Active since June 20, 2011PECOS Enrolled
CALLE MANUEL F. ROSSY, ESQ. ISABEL II, BAYAMON, PR 00960(787) 995-1900 Get Directions Write a Review

NPPES record last updated: September 23, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 23, 2026, Jun 3, 2026, Aug 21, 2024 and 2 more (5 updates tracked since 2022).

About Dr. Mariella Hillebrand Md NPPES

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

DR. MARIELLA HILLEBRAND MD (NPI 1639465461) is an individual brain injury medicine provider in Bayamon, Puerto Rico, licensed in Puerto Rico (18217) and active in the NPI registry since June 2011. She is enrolled in Medicare PECOS and is a graduate of Ponce School Of Medicine (2009).

NPPES Registry Identity

NPI1639465461
Entity TypeIndividualFemale
Primary Taxonomy2081P0301X
Provider Legal NameDR. MARIELLA HILLEBRANDCredential: MD
Location AddressCALLE MANUEL F. ROSSY, ESQ. ISABEL IIBayamon, PR 00960
Mailing AddressPo Box 262Bayamon, PR 00960-0262
Phone(787) 995-1900
Sole ProprietorYes
Medical School CMSPonce School Of MedicineGraduated 2009
Enumeration DateJune 20, 2011
Last NPPES UpdateSeptember 23, 20265 updates tracked since enumeration
NPPES CertifiedSeptember 23, 2026
✔ NPI 1639465461 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyPhysical Medicine & Rehabilitation · Brain Injury MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2081P0301X
License✔ Licensed in PR · 18217
Definition
A Brain Injury Medicine physician specializes in disorders of brain function due to injury and disease. These disorders encompass a range of medical, physical, neurologic, cognitive, sensory, and behavioral disorders that result in psychosocial, educational, and vocational consequences.
Also ListedPhysical Medicine & RehabilitationTaxonomy 208100000X · License R4398 (TX), 18217 (PR)
Also ListedPhysical Medicine & Rehabilitation · Pediatric Rehabilitation MedicineTaxonomy 2081P0010X · License 18217 (PR)

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas, Moda Health Plan, Inc..Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Mariella Hillebrand Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4486929411
PECOS Enrollment IDI20171002001164
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 Mariella Hillebrand reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Texas Children's Physician Group
Pediatrics
6621 FANNIN ST
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • Medicare enrollment name: Texas Childrens Physician Group
  • 2,498 clinicians in this Medicare group
NPI 1861675506 (832) 824-1000

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 5

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.
255 services59 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
29 services29 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.
27 services15 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
14 services14 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
12 services12 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.

PR PHYSICAL MEDICINE & REHAB, LLC
Physical Medicine & Rehabilitation (Brain Injury Medicine)
CALLE MANUEL F. ROSSY, ESQ. ISABEL II
BAYAMON, PR 00960
Bayamón Municipio (787) 995-1900
AIDALIS ANDINO-MARTINEZ
General Practice
CALLE MANUEL F. ROSSY, ESQUINA ISABEL II
BAYAMON, PR 00960
Bayamón Municipio (787) 212-6944

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 Mariella Hillebrand's NPI number?

The NPI number for Mariella Hillebrand is 1639465461. It was assigned to this individual provider in the NPPES registry on June 20, 2011.

Where is Mariella Hillebrand located?

Mariella Hillebrand practices at Calle Manuel F. Rossy Esq. Isabel II, Bayamon, PR 00960. The listed phone number is (787) 995-1900.

What is Mariella Hillebrand's specialty?

The primary specialty registered for this NPI is Physical Medicine & Rehabilitation, specializing in Brain Injury Medicine, with taxonomy code 2081P0301X.

Is Mariella Hillebrand enrolled in Medicare?

Yes. Mariella Hillebrand is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mariella Hillebrand's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mariella Hillebrand reassigns Medicare benefits to Texas Children's Physician Group (Houston, TX). 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 Mariella Hillebrand's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mariella Hillebrand accept?

Health plans from Blue Cross and Blue Shield of Texas and Moda Health Plan, Inc. list Mariella Hillebrand 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 Mariella Hillebrand was last updated on September 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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.