Mary Walker, RN
NPI 1104172808 · Certified Registered Nurse Anesthetist · Houston, TX
Provider details
- NPI number
- 1104172808
- Entity type
- Individual
- Primary specialty
- Certified Registered Nurse AnesthetistPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- RN
- Sex
- Female
- Sole proprietor
- No
- License
- 625752 (IN)
Specialties & taxonomies
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
13 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
5 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
36 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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 19 | $129 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 17 | $90 |
Typical Medicare-allowed amounts for these services range $90–$129 (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.
Practice location
Mailing address
Additional practice locations (4)
- 600 Mary StreetEvansville, IN 47747-2604Phone: (812) 450-2240Fax: (812) 450-2710
- 4011 Gateway BlvdNewburgh, IN 47630-8947Phone: (812) 450-2240Fax: (812) 450-2710
- 7200 Cambridge St Fl 10Houston, TX 77030-4202Phone: (713) 798-1750
- 3515 Coral Springs DrManvel, TX 77578-4880Phone: (281) 489-6965
Registry dates
- Enumerated
- 2012-07-31
- Last updated
- 2023-10-25
- Certified
- 2023-10-25
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.