1. Home
  2. Directory
  3. Texas
  4. Houston
  5. Internal Medicine
  6. NPI Profile

GUILLERMO MONTALBAN BRAVO SR. MD
NPI 1487156782
Internal Medicine - Hematology & Oncology in Houston, TX

Active since March 02, 2018PECOS EnrolledAccepts Medicare Assignment
81.38/100
CMS Quality Rating
1515 HOLCOMBE BLVD, HOUSTON, TX 77030(713) 792-6161 Get Directions Write a Review

NPPES record last updated: June 25, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 25, 2025, Sep 27, 2022, Jun 19, 2018 and 1 more (4 updates tracked since 2018).

About Guillermo Montalban Bravo Sr. Md NPPES

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

GUILLERMO MONTALBAN BRAVO SR. MD (NPI 1487156782) is an individual hematology & oncology provider in Houston, Texas, licensed in Texas (U7475) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS and is a graduate of Other (2010).

NPPES Registry Identity

NPI1487156782
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameGUILLERMO MONTALBAN BRAVO SR.Credential: MD
Location Address1515 HOLCOMBE BLVDHouston, TX 77030-4000
Mailing AddressP O Box 4439Houston, TX 77210-4439 · (713) 792-2991
Phone(713) 792-6161
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateMarch 2, 2018
Last NPPES UpdateJune 25, 20254 updates tracked since enumeration
NPPES CertifiedJune 25, 2025
✔ NPI 1487156782 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
Licenses✔ Licensed in TX · U7475✔ Licensed in TX · 46000
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
1515 HOLCOMBE BLVD, Houston, TX 77030
Open in Google Maps ↗

Other Identifiers 2

Other382460902TX · Cshcn Tpi
Medicaid382460901TX

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

Guillermo Montalban Bravo Sr. 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 ID6406118868
PECOS Enrollment IDI20180322001855
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 Guillermo Montalban Bravo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Physicians Referral Service
Same address
Multi-Specialty
1515 HOLCOMBE BLVD
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 2,675 clinicians in this Medicare group
NPI 1073574810 (713) 792-6161

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 8

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 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.
307 services78 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
208 services74 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
102 services56 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
39 services39 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.
39 services35 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.
35 services33 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77030 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
$176.98 typical visit price
range $58.24 – $176.98
Typical copayment $44.24 (range $14.56 – $44.24)
Most-billed visit code 99205
Established Patient
$102.71 typical visit price
range $18.60 – $143.93
Typical copayment $25.67 (range $4.65 – $35.98)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

81.38/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality81.25
Promoting Interoperability100
Improvement Activities40
Cost49.97

Other Providers at the Same Location NPPES 20

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

DR. MERRY CHEN MD
Psychiatry & Neurology (Neurology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Harris County (713) 792-6161
AMEENA BAGREE MALHOTRA M.D.
Internal Medicine (Nephrology)
1515 HOLCOMBE BLVD, 77030-4009
HOUSTON, TX 77030
Harris County (713) 792-6161
SOLANGE ERLYN COX MD
Surgery
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Harris County (713) 792-2360
DR. BRYAN KEITH GUILLORY M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Harris County (713) 792-6161
JANUARY Y TSAI MD
Anesthesiology
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Harris County (713) 792-6161
DR. SUNYOUNG LEE MD
Internal Medicine (Medical Oncology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Harris County (713) 792-6161
MRS. RACHEL KRAMER FUTRELL PA-C
Physician Assistant
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Harris County (713) 792-6161
MEGAN J TANNER NP-C
Nurse Practitioner
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Harris County (713) 792-6161

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 Guillermo Montalban Bravo's NPI number?

The NPI number for Guillermo Montalban Bravo is 1487156782. It was assigned to this individual provider in the NPPES registry on March 2, 2018.

Where is Guillermo Montalban Bravo located?

Guillermo Montalban Bravo practices at 1515 Holcombe Blvd, Houston, TX 77030. The listed phone number is (713) 792-6161.

What is Guillermo Montalban Bravo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Guillermo Montalban Bravo enrolled in Medicare?

Yes. Guillermo Montalban Bravo 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 Guillermo Montalban Bravo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Guillermo Montalban Bravo reassigns Medicare benefits to Physicians Referral Service (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 Guillermo Montalban Bravo'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 Guillermo Montalban Bravo was last updated on June 25, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.