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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. PETER R ERMIS M.D.
NPI 1639322407
Internal Medicine - Adult Congenital Heart Disease in Houston, TX

Active since October 24, 2008PECOS EnrolledAccepts Medicare Assignment
1 BAYLOR PLZ, DEPARMENT OF MEDICINE, HOUSTON, TX 77030(713) 798-1000 Get Directions Write a Review

NPPES record last updated: September 17, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 17, 2026, Jan 11, 2022, Nov 13, 2020 (3 updates tracked since 2020).

About Dr. Peter R Ermis M.d. NPPES

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

DR. PETER R ERMIS M.D. (NPI 1639322407) is an individual adult congenital heart disease provider in Houston, Texas, licensed in Texas (N5041) and active in the NPI registry since October 2008. He is enrolled in Medicare PECOS, is affiliated with Texas Childrens Hosp, and is a graduate of University Of Texas Medical School At San Antonio (2005).

NPPES Registry Identity

NPI1639322407
Entity TypeIndividualMale
Primary Taxonomy207RA0002X
Provider Legal NameDR. PETER R ERMISCredential: M.D.
Location Address1 BAYLOR PLZ, DEPARMENT OF MEDICINEHouston, TX 77030-3411
Mailing Address2 Greenway Plz Ste 300Houston, TX 77046-0207 · (832) 828-3660
Phone(713) 798-1000
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2005
Enumeration DateOctober 24, 2008
Last NPPES UpdateSeptember 17, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 17, 2026
✔ NPI 1639322407 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Adult Congenital Heart DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RA0002X
License✔ Licensed in TX · N5041
Definition
A physician who specializes in the care and treatment of adults with congenital heart disease. Adult congenital heart disease (ACHD) physicians are trained to understand the complexities of congenital heart disease, anatomy, physiology, surgical repairs, and long-term complications and use that to manage ACHD with acquired heart disease, including heart failure, arrhythmias, and pulmonary hypertension.
Also ListedInternal MedicineTaxonomy 207R00000X · License BP10023326 (TX)
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License N5041 (TX)
Also ListedPediatrics · Pediatric CardiologyTaxonomy 2080P0202X · License N5041 (TX)
1 BAYLOR PLZ, Houston, TX 77030
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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., UnitedHealthcare.Insurance ›

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. Peter R Ermis 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 ID4486878360
PECOS Enrollment IDI20140616001273
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 Peter Ermis reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Baylor College Of Medicine
0.2 mi
Family Medicine
1504 TAUB LOOP
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 2,296 clinicians in this Medicare group
NPI 1053352914 (713) 873-2000
Texas Children's Physician Group
0.3 mi
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
Baylor College Of Medicine
0.8 mi
Medical Genetics, Ph.D. Medical Genetics
7200 CAMBRIDGE ST FL 10
Houston, TX 77030
  • Reassigned Medicare billing, Texas enrollment
  • 2,554 clinicians in this Medicare group
NPI 1881026664 (713) 798-0000

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.

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.
30 services25 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.
21 services17 patients

Hospital Affiliations CMS Care Compare

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

Texas Childrens Hosp

Childrens · Houston, TX
OwnershipVoluntary non-profit - Private
CMS Certification Number453304
Location6621 Fannin StreetHouston, TX 77030 · Harris County
Emergency services

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.

BAYLOR COLLEGE OF MEDICINE
General Acute Care Hospital
1 BAYLOR PLZ, SUITE 022D
HOUSTON, TX 77030
Harris County (713) 798-4620
MATTHEW CARROLL
Obstetrics & Gynecology
1 BAYLOR PLZ, BCM610
HOUSTON, TX 77030
Harris County (832) 826-7372
DR. HOLLAND MANON KAPLAN MD
Hospitalist
1 BAYLOR PLZ
HOUSTON, TX 77030
Harris County (940) 231-1879
SIDRAH SHAH MD
Student in an Organized Health Care Education/Training Program
1 BAYLOR PLZ
HOUSTON, TX 77030
Harris County (713) 798-5928
MICHAEL AZAR MD (PLANNED 5/27/22)
Student in an Organized Health Care Education/Training Program
1 BAYLOR PLZ
HOUSTON, TX 77030
Harris County (713) 798-6376
MICHELE ALEXIS CABEZA MD
Student in an Organized Health Care Education/Training Program
1 BAYLOR PLZ
HOUSTON, TX 77030
Harris County (832) 824-0200
NATHANIEL GREY LOYD
Student in an Organized Health Care Education/Training Program
1 BAYLOR PLZ
HOUSTON, TX 77030
Harris County (405) 834-5432
ANDREA ELIZABETH GULOY
Student in an Organized Health Care Education/Training Program
1 BAYLOR PLZ
HOUSTON, TX 77030
Harris County (832) 824-1170

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 Peter Ermis's NPI number?

The NPI number for Peter Ermis is 1639322407. It was assigned to this individual provider in the NPPES registry on October 24, 2008.

Where is Peter Ermis located?

Peter Ermis practices at 1 Baylor Plz Deparment Of Medicine, Houston, TX 77030. The listed phone number is (713) 798-1000.

What is Peter Ermis's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Adult Congenital Heart Disease, with taxonomy code 207RA0002X.

Is Peter Ermis enrolled in Medicare?

Yes. Peter Ermis 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 organizations bill Medicare for Peter Ermis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Peter Ermis reassigns Medicare benefits to 3 organizations: Baylor College Of Medicine (Houston, TX), Texas Children's Physician Group (Houston, TX) and Baylor College Of Medicine (Houston, TX). 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 Peter Ermis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Peter Ermis accept?

Health plans from Blue Cross and Blue Shield of Texas, Moda Health Plan, Inc. and UnitedHealthcare list Peter Ermis 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.

Is Peter Ermis affiliated with any hospitals?

According to CMS data, Peter Ermis is affiliated with Texas Childrens Hosp.

When was this NPI record last updated?

The NPPES record for Peter Ermis was last updated on September 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 34 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.