NPI age
— years
Enumerated 2025-10-15
● Active
Type 1 · Individual
MRS. Mercy Annamma John, MSN, APRN, AGACNP-BC
John is 1 of 694 nurse practitioner providers in Houston and 1 of 3226 in Texas.
Primary specialty
Nurse Practitioner
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2025-10-20
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 3226 active nurse practitioner providers in Texas.
NPI age
0 years
↓ 6 yr below median (6 yr)
State licenses
1 state
6% of peers hold multiple states
Subspecialties
1
In the 30% of peers with subspecialties
NPI lifetime · 2025 → 2026
2025-10Enumerated in NPPES
2025
2026
Where they practice
Practice location
6720 Bertner Ave
Houston, TX 770302604
Mailing address
6720 Bertner Ave
Houston, TX 770302604
Additional practice locations
1 secondary location on file with NPPES.
Location 2
7200 Cambridge St
Houston, TX 770304202
Specialties
-
Nurse Practitioner PrimaryDefinition to come...
-
Nurse PractitionerDefinition to come...
Practice context
Part of a multi-provider practice. 423 other active providers share this practice address in NPPES.
Recently enumerated nearby: 14 new nurse practitioner providers have been added in Houston in the last 180 days.
See all →
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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.