What is Oscar Guillama's NPI number?

Oscar Guillama's National Provider Identifier (NPI) is 1003378977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Oscar Guillama's specialty?

Oscar Guillama is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).

Where is Oscar Guillama located?

Oscar Guillama's practice location on file with NPPES is 1400 Pressler St, Houston, TX 77030-3722.

What is Oscar Guillama's phone number?

The practice phone number listed in the NPPES registry for Oscar Guillama is (713) 792-6182.

Is Oscar Guillama's NPI active?

Yes — Oscar Guillama's NPI (1003378977) is active in the NPPES registry as of the last update on 2026-04-28.

IndividualActive

Oscar Guillama, MD

NPI 1003378977 · Diagnostic Radiology Physician · Houston, TX

Oscar Guillama, MD is a Diagnostic Radiology Physician provider in Houston, TX (NPI 1003378977).

Provider details

NPI number: 1003378977
Entity type: Individual
Primary specialty: Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Male
Sole proprietor: Yes
License: BP10073826 (TX)

Specialties & taxonomies

Diagnostic Radiology PhysicianPrimary2085R0202XLicense BP10073826 (TX)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care
General Practice Physician208D00000XLicense 34923R (PR)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(75/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
7 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
4 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Practice location

1400 Pressler St

Houston, TX 77030-3722

Phone: (713) 792-6182

Approximate (ZIP-level) locationGet directions

More TX providers

Mailing address

Hc 3 Box 11102

Camuy, PR 00627-9650

Additional practice locations (3)

Autopista Luis a Ferre Salida 21 Carr 12
Urb Turabo Gardens
Caguas, PR 00726
Phone: (787) 743-3038
San Juan City Hospital
Bo. Monacillos, Centro Medico De Pr
Rio Piedras, PR 00917
Phone: (787) 480-2791
1 Baylor Plz
Houston, TX 77030-3498
Phone: (713) 798-4951

Enumerated: 2019-04-01
Last updated: 2026-04-28
Certified: 2026-04-28

Frequently asked questions

What is Oscar Guillama's NPI number?: Oscar Guillama's National Provider Identifier (NPI) is 1003378977, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Oscar Guillama's specialty?: Oscar Guillama is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
Where is Oscar Guillama located?: Oscar Guillama's practice location on file with NPPES is 1400 Pressler St, Houston, TX 77030-3722.
What is Oscar Guillama's phone number?: The practice phone number listed in the NPPES registry for Oscar Guillama is (713) 792-6182.
Is Oscar Guillama's NPI active?: Yes — Oscar Guillama's NPI (1003378977) is active in the NPPES registry as of the last update on 2026-04-28.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.