Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Andrea A Downey, MSN, RN

Individual provider Mental Health Counselor · NPI 1538315692

Andrea A Downey, MSN, RN is a Nurse Practitioner in Houston, Texas. Qualified in 2008, 18 years ago. Practices with Memorial Hermann Medical Group, a 753-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
18
Licensed in
TX
In the registry since
2008
Specialties on file
3
What do these letters mean?
MSN — Master of Science in Nursing
A graduate nursing degree, usually held alongside an advanced practice licence.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

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Practice location Address checks out

1635 N Loop W Ste SE.155
Houston, TX 77008-1532
Phone: (713) 867-2429
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 915 Gessner Rd Ste 100, Houston, TX 77024-2537 — (713) 867-2429
  • 3203 Broadway St, Pearland, TX 77581-1414 — (713) 413-5738

Specialties & licences

Adult Health Nurse Practitioner (primary) Taxonomy 363LA2200X · Licence AP117031 (TX)
Mental Health Counselor Taxonomy 101YM0800X
Registered Nurse Taxonomy 163W00000X · Licence 642444 (TX)

Record details

NPI number1538315692
Entity typeIndividual (Type 1)
GenderFemale
Credentials MSN , RN
Sole proprietorYes
NPI enumeratedAugust 8, 2008
Last updated in NPPESAugust 12, 2025
Certification dateAugust 12, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2008 (18 years in practice)
Group practice Memorial Hermann Medical Group — 753 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients54
Services billed 175 a service is one billed item, such as a visit, a test or a procedure
Average patient age78

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Memorial Hermann Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 753 clinicians in the practice; 12 are shown here.

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