NPI age
15 years
Enumerated 2010-12-27
● Active
Type 1 · Individual
Marilyn Porter
Porter is 1 of 6 ambulance providers in Missouri City and 1 of 919 in Texas.
Primary specialty
Ambulance
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2010-12-27
Source: monthly bulk 2026-05
Sole proprietor
Yes
Solo practice on file
How this provider compares
Across 919 active ambulance providers in Texas.
NPI age
15 years
↓ 3 yr below median (18 yr)
State licenses
1 state
0% of peers hold multiple states
Subspecialties
0
13% of peers hold subspecialties
NPI lifetime · 2010 → 2026
2010-12Enumerated in NPPES
2010
2026
Where they practice
Practice location
13360 S Gessner Rd
Missouri City, TX 774891022
Mailing address
7830 Moonlight Ct
Missouri City, TX 774597560
Specialties
-
Ambulance PrimaryAn emergency vehicle used for transporting patients to a health care facility after injury or illness. Types of ambulances used in the United States include ground (surface) ambulance, rotor-wing (helicopter), and fixed-wing aircraft (airplane).
Practice context
Part of a multi-provider practice. 1 other active provider shares this practice address in NPPES.
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- 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.