NPI age
20 years
Enumerated 2005-08-26
● Active Type 2 · Organization
Greystone Medical Services
Greystone Medical Services is 1 of 919 ambulance organizations in Texas.
Primary specialty
Ambulance
Practice locations
1
0 secondary on file
Status
Active
No deactivations on record
Authorized official
Berleth
Owner
Last NPPES update
2020-08-22
Source: monthly bulk 2026-05
How this organization compares
Across 919 active ambulance providers in Texas.
NPI age
20 years
↑ 2 yr above median
Practice locations
1
0 secondary on file
Subspecialties
0
NPI lifetime · 2005 → 2026
2005-08Enumerated in NPPES
2005
2026
Where they practice
Primary practice location
2131 Sarah St
Houston, TX 770543804
Mailing address
2131 Sarah St
Houston, TX 770543804
Authorized official
Robert Berleth
Owner
📞 7137950665
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
Single-site organization. Only one practice location on file.
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- Confirm the NPI on NPPES.The CMS registry is the system of record. Open NPPES →
- Verify the organization is in good standing.Cross-check with the state's business registration and any applicable licensing boards.
- Confirm payer enrollment if billing.NPI presence does not guarantee active enrollment with Medicare, Medicaid, or commercial payers.