Mary Lou Heater, APRN
NPI 1073748745 · Psychiatric/Mental Health Nurse Practitioner · Houston, TX
Enrolled with Medicare as Practitioner - Certified Clinical Nurse Specialist (cns) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Lou Heater, APRN is a Psychiatric/Mental Health Nurse Practitioner provider in Houston, TX (NPI 1073748745).
Provider details
- NPI number
- 1073748745
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- APRN
- Sex
- Female
- Sole proprietor
- Yes
- License
- AP110284 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
44 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 44 | $82 |
Typical Medicare-allowed amounts for these services range $82–$82 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 96 | 19 |
| Quetiapine Fumarate | 88 | 13 |
| Aripiprazole | 87 | 13 |
| Benztropine Mesylate | 79 | 15 |
| Risperidone | 77 | 14 |
| Sertraline Hcl | 73 | 11 |
| Haloperidol | 67 | — |
Practice location
Mailing address
Additional practice locations (1)
- 3267 Bee Caves Rd#107Austin, TX 78746-6700Phone: (512) 470-2514
Registry dates
- Enumerated
- 2009-05-23
- Last updated
- 2018-06-19
Frequently asked questions
- What is Mary Lou Heater's NPI number?
- Mary Lou Heater's National Provider Identifier (NPI) is 1073748745, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Lou Heater's specialty?
- Mary Lou Heater is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Lou Heater located?
- Mary Lou Heater's practice location on file with NPPES is 9401 Southwest Fwy, Houston, TX 77074.
- What is Mary Lou Heater's phone number?
- The practice phone number listed in the NPPES registry for Mary Lou Heater is (713) 970-7000.
- Does Mary Lou Heater accept Medicare?
- Mary Lou Heater is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Lou Heater's NPI active?
- Yes — Mary Lou Heater's NPI (1073748745) is active in the NPPES registry as of the last update on 2018-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.