NPI age
18 years
Enumerated 2007-07-12
● Active
Type 1 · Individual
MR. Siva Ayyar, MD
Ayyar is 1 of 8 preventive medicine providers in Houston and 1 of 71 in Texas.
Primary specialty
Preventive Medicine
Plus 2 subspecialties
Licensed in
TX, CA
2 states
Status
Active
No deactivations on record
Last NPPES update
2015-03-19
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 71 active preventive medicine providers in Texas.
NPI age
18 years
≈ at median (18 yr)
State licenses
2 states
Top 93% — 7% of peers are multi-state
Subspecialties
1
In the 33% of peers with subspecialties
NPI lifetime · 2007 → 2026
2007-07Enumerated in NPPES
2007
2026
Where they practice
Practice location
6641 Grand Blvd
Houston, TX 77021
Mailing address
Po Box 700822
San Jose, CA 95170
Specialties
-
Preventive Medicine PrimaryA preventive medicine physician who specializes in preventive medicine/occupational-environmental medicine, which is focused on protecting the population from occupational and environmental conditions.
-
Preventive MedicineOccupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures....
Practice context
Part of a multi-provider practice. 2 other active providers share this practice address in NPPES.
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Request a quote →How to verify this provider
- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Check the state license is currently active.State licensing boards publish current status; NPPES does not.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.