NPI age
20 years
Enumerated 2006-03-28
● Active
Type 1 · Individual
DR. John M Holmberg, M.D.
Holmberg is 1 of 20 specialist providers in Lewisville and 1 of 4038 in Texas.
Primary specialty
Specialist
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2007-07-08
Source: monthly bulk 2026-05
Sole proprietor
Not specified
May be part of a larger org
How this provider compares
Across 4038 active specialist providers in Texas.
NPI age
20 years
↑ 2 yr above median (18 yr)
State licenses
1 state
0% of peers hold multiple states
Subspecialties
0
7% of peers hold subspecialties
NPI lifetime · 2006 → 2026
2006-03Enumerated in NPPES
2006
2026
Where they practice
Practice location
405 State Highway 121 Byp, Bldg A, Ste 160
Lewisville, TX 750678193
Mailing address
Po Box 814129
Dallas, TX 753814129
Specialties
-
Specialist PrimaryAn individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Practice context
Part of a multi-provider practice. 5 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.