MARK HASSLER – Acute Care Nurse Practitioner, NPI 1871789735

MARK HASSLER is a healthcare provider. based in Fort sam houston, Texas. specializing in Acute Care Nurse Practitioner. They hold a License No. 0000012787 (TN). The NPI Number for MARK HASSLER is 1871789735

Main info

Male
Name
MARK HASSLER
NPI
1871789735
Phone
(210) 221-5212
Address
3851 ROGER BROOKE DR
Enumeration Date
24 September 2007
Last Update Date
8 October 2010
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience50
Completeness75
Years active:18State licenses:1Digital endpointsOther names

Provider Addresses for MARK HASSLER

  • 3851 ROGER BROOKE DR

    BROOKE ARMY MEDICAL CENTER

    FORT SAM HOUSTON, TX 782344501

    Phone: (210) 221-5212

    Fax: (270) 956-0180

    Mailing address matches the actual address.

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

No Open Payments data available for this provider.

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Medicare Enrollment & Revalidation

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No Medicare enrollment or revalidation data available for this provider in our database.

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Medicare Utilization (FFS)

Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·

Educational use only—not medical, billing, or legal advice.

No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 78234)

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Reviews

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Frequently asked questions

How is MARK HASSLER identified in CMS data?
CMS-hosted NPPES data lists MARK HASSLER with NPI 1871789735.
Can I rely on MARK HASSLER being an active provider?
As of the registry snapshot, MARK HASSLER is marked active.
What is MARK HASSLER's specialty?
The listing groups MARK HASSLER with Acute Care Nurse Practitioner. Clinical services aligned with this taxonomy classification.
What area does MARK HASSLER serve?
MARK HASSLER's listing highlights Fort Sam Houston, Texas; more addresses can appear in NPPES.
Why does MARK HASSLER have multiple addresses?
2 practice locations appear in the available data. Multiple addresses are common for hospital privileges, telehealth, or multi-site groups.

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