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PHOENIX DIAGNOSTIC ENTERPRISES PLLC
NPI 1578766408
Internal Medicine in Houston, TX

Active since June 07, 2007
1200 BINZ ST STE 1100, HOUSTON, TX 77004(713) 797-9191(713) 986-1353 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, Aug 3, 2017 (2 updates tracked since 2017).

About Phoenix Diagnostic Enterprises Pllc NPPES

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

PHOENIX DIAGNOSTIC ENTERPRISES PLLC (NPI 1578766408), doing business as Diagnostic Clinic Of Houston, is a healthcare organization registered as an internal medicine in Houston, Texas and active in the NPI registry since June 2007. The organization lists Ronald C Colman, President, as its authorized official.

NPPES Registry Identity

NPI1578766408
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NamePHOENIX DIAGNOSTIC ENTERPRISES PLLC
Location Address1200 BINZ ST STE 1100Houston, TX 77004-6926
Mailing Address1200 Binz St Ste 1100Houston, TX 77004-6926 · (713) 797-9191 · Fax (713) 986-1353
Phone(713) 797-9191
Fax(713) 986-1353
Organization SubpartNo
Authorized OfficialRonald C ColmanPresident · (713) 797-9191
Enumeration DateJune 7, 2007
Last NPPES UpdateJuly 21, 20222 updates tracked since enumeration
✔ NPI 1578766408 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1200 BINZ ST STE 1100, Houston, TX 77004
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Other Names 1

Former Legal Business NameDiagnostic Clinic Of Houston

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellPoint.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Phoenix Diagnostic Enterprises Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

5

Medicare enrollment records show 5 clinicians reassign Medicare billing to Phoenix Diagnostic Enterprises PLLC, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 4 within 10 miles. They are listed nearest first.

Clinicians, nearest first (5)

Ronald Colman, M.D.
Gastroenterology
NPI 1871579417
1200 BINZ ST STE 800
Houston, TX 77004
(713) 797-9191
✔ PECOS✔ Accepts MedicareSame address
Freemu Varghese, M.D.
Nephrology
NPI 1467438614
1200 BINZ ST STE 700
Houston, TX 77004
(713) 797-9191
✔ PECOS✔ Accepts MedicareSame address
Raymundo Teheng, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1689600017
1313 HERMANN DR SUITE 270
Houston, TX 77004
(281) 580-9030
✔ PECOS✔ Accepts Medicare0.1 mi
Justin Pelzer, CRNA
Certified Registered Nurse Anesthetist (CRNA)
NPI 1861944001
6720 BERTNER AVE STE O-520
Houston, TX 77030
(713) 798-1750
✔ Accepts Medicare1.3 mi
Sabrenda Littles, CRNA, R.N.
Certified Registered Nurse Anesthetist (CRNA)
NPI 1023192424
267 GRANT ST
Bridgeport, CT 06610
(203) 384-3000
✔ Accepts Medicare1,475 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Phoenix Diagnostic Enterprises PLLC's NPI number?

The NPI number for Phoenix Diagnostic Enterprises PLLC is 1578766408. It was assigned to this organization in the NPPES registry on June 7, 2007. The provider was formerly known as Diagnostic Clinic Of Houston.

Where is Phoenix Diagnostic Enterprises PLLC located?

Phoenix Diagnostic Enterprises PLLC is located at 1200 Binz St Ste 1100, Houston, TX 77004. The listed phone number is (713) 797-9191.

What is Phoenix Diagnostic Enterprises PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Phoenix Diagnostic Enterprises PLLC enrolled in Medicare?

Yes. Phoenix Diagnostic Enterprises PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Phoenix Diagnostic Enterprises PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 5 clinicians in 3 Medicare specialties reassign their Medicare billing to Phoenix Diagnostic Enterprises PLLC. A 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 the clinician's services. The largest specialties are Certified Registered Nurse Anesthetist (CRNA) (3), Gastroenterology (1) and Nephrology (1). Of these, 2 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Phoenix Diagnostic Enterprises PLLC accept?

Health plans from WellPoint list Phoenix Diagnostic Enterprises PLLC 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 Phoenix Diagnostic Enterprises PLLC was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.