NPI age
20 years
Enumerated 2006-04-17
● Active
Type 1 · Individual
John W Merrell, P.A.
Merrell is 1 of 21 physician assistant providers in Round Rock and 1 of 1890 in Texas.
Primary specialty
Physician Assistant
Plus 2 subspecialties
Licensed in
TX, LA, TN
3 states
Status
Active
No deactivations on record
Last NPPES update
2020-01-02
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1890 active physician assistant providers in Texas.
NPI age
20 years
↑ 9 yr above median (11 yr)
State licenses
3 states
Top 94% — 5% of peers are multi-state
Subspecialties
0
32% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-04Enumerated in NPPES
2006
2026
Where they practice
Practice location
302 University Blvd
Round Rock, TX 786651032
Mailing address
Po Box 844658
Dallas, TX 752844658
Specialties
-
Physician Assistant PrimaryDefinition to come...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 05 (LA) | 1625795 |
Multi-state credentialing: Licensed in 3 states. Useful context for credentialers building cross-state provider networks.
Practice context
Part of a multi-provider practice. 155 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 →
- 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.