DR. JANITZIO JIOVANNI GUZMAN MD
NPI 1235592643
Internal Medicine - Infectious Disease in Houston, TX
About Dr. Janitzio Jiovanni Guzman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JANITZIO JIOVANNI GUZMAN MD (NPI 1235592643) is an individual infectious disease provider in Houston, Texas, licensed in Texas (V9909) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Harris Health System, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Accepted 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. Janitzio Jiovanni Guzman 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.
Medicare Billing Reassignments
2Medicare enrollment records show Janitzio Guzman reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- 2,296 clinicians in this Medicare group
Houston, TX 77030
- Reassigned Medicare billing, Texas enrollment
- Medicare enrollment name: Texas Childrens Physician Group
- 2,498 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Harris Health System
Acute Care Hospitals · Houston, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 77004 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
HOUSTON, TX 77004
HOUSTON, TX 77004
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 Janitzio Guzman's NPI number?
The NPI number for Janitzio Guzman is 1235592643. It was assigned to this individual provider in the NPPES registry on April 1, 2016.
Where is Janitzio Guzman located?
Janitzio Guzman practices at 3601 N Macgregor Way, Houston, TX 77004. The listed phone number is (713) 873-3700.
What is Janitzio Guzman's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Infectious Disease, with taxonomy code 207RI0200X.
Is Janitzio Guzman enrolled in Medicare?
Yes. Janitzio Guzman 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 Janitzio Guzman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Janitzio Guzman reassigns Medicare benefits to 2 organizations: Baylor College Of Medicine (Houston, TX) and Texas Children's Physician Group (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 Janitzio Guzman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Janitzio Guzman accept?
Health plans from Blue Cross and Blue Shield of Texas and WellPoint list Janitzio Guzman 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 Janitzio Guzman affiliated with any hospitals?
According to CMS data, Janitzio Guzman is affiliated with Harris Health System.
When was this NPI record last updated?
The NPPES record for Janitzio Guzman was last updated on July 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Dr. Janitzio Jiovanni Guzman, MD · NPI 1235592643
Infectious Disease physician in Houston, Texas. Individual provider, active in the CMS NPPES registry since April 1, 2016.
## Identity
- **NPI:** 1235592643 (Entity type: Individual)
- **Enumerated:** April 1, 2016
- **Primary specialty:** Internal Medicine - Infectious Disease · taxonomy 207RI0200X
- **State license:** V9909 (Texas)
- **Sole proprietor:** No
## Practice location
- **Address:** 3601 N MACGREGOR WAY, Houston, TX 77004-8004
- **Phone:** (713) 873-3700
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Baylor College Of Medicine (NPI 1053352914, Houston, TX); Texas Children's Physician Group (NPI 1861675506, Houston, TX) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At Houston, class of 2016
## Record status
- **NPPES last updated:** July 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1235592643) · Data from the CMS NPPES public registry.