NPI age
19 years
Enumerated 2007-03-09
● Active
Type 1 · Individual
DR. Allyson Lynn Harroff, M.D.
Harroff is 1 of 95 internal medicine providers in San Antonio and 1 of 1069 in Texas.
Primary specialty
Internal Medicine
Plus 1 subspecialty
Licensed in
TX
1 state
Status
Active
No deactivations on record
Last NPPES update
2022-07-28
Source: monthly bulk 2026-05
Sole proprietor
No
May be part of a larger org
How this provider compares
Across 1069 active internal medicine providers in Texas.
NPI age
19 years
≈ at median (18 yr)
State licenses
1 state
22% of peers hold multiple states
Subspecialties
1
In the 52% of peers with subspecialties
NPI lifetime · 2007 → 2026
2007-03Enumerated in NPPES
2007
2026
Where they practice
Practice location
2130 N.e.loop 410, Suite #100
San Antonio, TX 782174660
Mailing address
Po Box 911230
Dallas, TX 753911230
Specialties
-
Internal Medicine PrimaryAn internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine...
-
Internal MedicineAn internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and...
Identifiers
| Type | Value | Notes |
|---|---|---|
| 01 (TX) | 8AA841 | BLUECROSS/BLUESHIELD TX. |
| 01 (TX) | P01547658 | RAILROAD MEDICARE |
| 05 (TX) | 185867201 | |
| 05 (TX) | 185867202 |
Practice context
Part of a multi-provider practice. 3 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 →
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