Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JANITZIO JIOVANNI GUZMAN MD
NPI 1235592643
Internal Medicine - Infectious Disease in Houston, TX

Active since April 01, 2016PECOS EnrolledAccepts Medicare Assignment
3601 N MACGREGOR WAY, HOUSTON, TX 77004(713) 873-3700 Get Directions Write a Review

NPPES record last updated: July 1, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Aug 8, 2016, Apr 1, 2016 (2 updates tracked since 2016).

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

NPI1235592643
Entity TypeIndividualMale
Primary Taxonomy207RI0200X
Provider Legal NameDR. JANITZIO JIOVANNI GUZMANCredential: MD
Location Address3601 N MACGREGOR WAYHouston, TX 77004-8004
Mailing Address1 Baylor Plz, Jewish Building, Room 011-duHouston, TX 77030 · (713) 873-4000
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At HoustonGraduated 2016
Enumeration DateApril 1, 2016
Last NPPES UpdateJuly 1, 20262 updates tracked since enumeration
NPPES CertifiedJuly 1, 2026
NPI 1235592643 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Infectious DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RI0200X
Licenses Licensed in TX · V9909 Licensed in DC · MD048232
Definition

An internist who deals with infectious diseases of all types and in all organ systems. Conditions requiring selective use of antibiotics call for this special skill. This physician often diagnoses and treats AIDS patients and patients with fevers which have not been explained. Infectious disease specialists may also have expertise in preventive medicine and travel medicine.

Also ListedPediatrics · Pediatric Infectious DiseasesTaxonomy 2080P0208X · License V9909 (TX)
3601 N MACGREGOR WAY, Houston, TX 77004

Secondary Practice Locations 2

Location 11504 Taub LoopHouston, TX 77030-1608 · Phone (713) 873-8890
Location 22525A Holly Hall StHouston, TX 77054-4124 · Phone (713) 526-4243

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID3577933589
PECOS Enrollment IDI20250724001604
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.

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, TX
3/5 CMS rating
OwnershipGovernment - Hospital District or Authority
CMS Certification Number450289
Location2525 Holly HallHouston, TX 77054 · Harris County
Emergency services Birthing friendly

Physician 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.

New Patient
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
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.

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.

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
3601 N MACGREGOR WAY
HOUSTON, TX 77004
Physical Therapy Assistant
3601 N MACGREGOR WAY
HOUSTON, TX 77004
Clinical Neuropsychologist
3601 N MACGREGOR WAY
HOUSTON, TX 77004
Physical Medicine & Rehabilitation
3601 N MACGREGOR WAY, SUITE 240
HOUSTON, TX 77004
Physical Therapist (Neurology)
3601 N MACGREGOR WAY
HOUSTON, TX 77004
Pharmacist
3601 N MACGREGOR WAY, QUENTIN MEASE COMMUNITY HOSPITAL PHARMACY
HOUSTON, TX 77004
Physical Therapist (Orthopedic)
3601 N MACGREGOR WAY
HOUSTON, TX 77004
Pharmacist
3601 N MACGREGOR WAY
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.

What insurance does Janitzio Guzman accept?

Health plans from Molina Healthcare 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 with the weekly NPPES data releases published by CMS.