DR. ALLYSON LYNN HARROFF M.D.
NPI 1538291380
Internal Medicine - Hematology & Oncology in San Antonio, TX
About Dr. Allyson Lynn Harroff M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALLYSON LYNN HARROFF M.D. (NPI 1538291380) is an individual hematology & oncology provider in San Antonio, Texas, licensed in Texas (M3251) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS, is affiliated with Baptist Medical Center, and is a graduate of Medical College Of Ohio (1998).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Allyson Lynn Harroff M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Allyson Harroff reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Austin, TX 78745
- Reassigned Medicare billing, Texas enrollment
- 1,054 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 42
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Baptist Medical Center
Acute Care Hospitals · San Antonio, TXMethodist Hospital Stone Oak
Acute Care Hospitals · San Antonio, TXPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 78217 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN ANTONIO, TX 78217
SAN ANTONIO, TX 78217
SAN ANTONIO, TX 78217
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Allyson Harroff's NPI number?
The NPI number for Allyson Harroff is 1538291380. It was assigned to this individual provider in the NPPES registry on March 9, 2007.
Where is Allyson Harroff located?
Allyson Harroff practices at 2130 N.E.Loop 410 Suite #100, San Antonio, TX 78217. The listed phone number is (210) 656-7177.
What is Allyson Harroff's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Allyson Harroff enrolled in Medicare?
Yes. Allyson Harroff is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Allyson Harroff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Allyson Harroff reassigns Medicare benefits to Texas Oncology PA (Austin, TX). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Allyson Harroff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Allyson Harroff accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections and Ambetter from Superior HealthPlan and 11 other insurers list Allyson Harroff as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Allyson Harroff affiliated with any hospitals?
According to CMS data, Allyson Harroff is affiliated with Baptist Medical Center and Methodist Hospital Stone Oak.
When was this NPI record last updated?
The NPPES record for Allyson Harroff was last updated on July 28, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.