NPI age
13 years
Enumerated 2013-05-10
● Active
Type 1 · Individual
Marc Cillo, M.D.
Cillo is 1 of 185 internal medicine providers in Houston and 1 of 935 in Texas.
Primary specialty
Internal Medicine
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2018-09-25
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 935 active internal medicine providers in Texas.
NPI age
13 years
↓ 5 yr below median (18 yr)
State licenses
1 state
15% of peers hold multiple states
Subspecialties
0
38% of peers hold subspecialties
NPI lifetime · 2013 → 2026
2013-05Enumerated in NPPES
2013
2026
Where they practice
Practice location
6410 Fannin St, Suite 600
Houston, TX 770305389
Mailing address
6410 Fannin St, Suite 600
Houston, TX 770305389
Specialties
-
Internal Medicine PrimaryAn internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary...
Practice context
Part of a multi-provider practice. 415 other active providers share this practice address in NPPES.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
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- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.