Mary Wallace, DNP, CRNP, A-GNP-C
NPI 1295503829 · Adult Health Nurse Practitioner · Oxon Hill, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Wallace, DNP, CRNP, A-GNP-C is a Adult Health Nurse Practitioner provider in Oxon Hill, MD (NPI 1295503829).
Provider details
- NPI number
- 1295503829
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- DNP, CRNP, A-GNP-C
- Sex
- Female
- Sole proprietor
- No
- License
- R228560 (MD)
Specialties & taxonomies
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
2 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
666 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) |
|---|---|---|
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 429 | $90 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes99310 | 68 | $129 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 65 | $90 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 25 | $63 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 23 | $153 |
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 41 | 20 |
| Gabapentin | 31 | 15 |
| Sertraline Hcl | 31 | 12 |
| Tramadol Hcl | 27 | 14 |
| Clonazepam | 19 | — |
| Duloxetine Hcl | 17 | — |
| Escitalopram Oxalate | 16 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-12-13
- Last updated
- 2023-12-13
- Certified
- 2023-12-13
Frequently asked questions
- What is Mary Wallace's NPI number?
- Mary Wallace's National Provider Identifier (NPI) is 1295503829, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Wallace's specialty?
- Mary Wallace is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mary Wallace located?
- Mary Wallace's practice location on file with NPPES is 6178 Oxon Hill Rd, Oxon Hill, MD 20745-3109.
- What is Mary Wallace's phone number?
- The practice phone number listed in the NPPES registry for Mary Wallace is (301) 292-9220.
- Does Mary Wallace accept Medicare?
- Mary Wallace is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Wallace's NPI active?
- Yes — Mary Wallace's NPI (1295503829) is active in the NPPES registry as of the last update on 2023-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.