Mary Denny, M.D., M.P.H.
NPI 1558688994 · Neurology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Neurology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Denny, M.D., M.P.H. is a Neurology Physician provider in Houston, TX (NPI 1558688994).
Provider details
- NPI number
- 1558688994
- Entity type
- Individual
- Primary specialty
- Neurology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., M.P.H.
- Sex
- Female
- Sole proprietor
- No
- License
- Q1129 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
408 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 128 | $191 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 82 | $126 |
| Critical Care, First 30-74 Minutes99291 | 51 | $225 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician OrG2212 | 50 | $35 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 35 | $184 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 35 | 13 |
| Apixabanbrand: Eliquis | 30 | — |
| Nortriptyline Hcl | 26 | — |
| Rosuvastatin Calcium | 23 | 11 |
| Levetiracetam | 18 | — |
| Ticagrelorbrand: Brilinta | 16 | — |
| Gabapentin | 15 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$34 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-04-26
- Last updated
- 2016-04-23
Frequently asked questions
- What is Mary Denny's NPI number?
- Mary Denny's National Provider Identifier (NPI) is 1558688994, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Denny's specialty?
- Mary Denny is listed in the NPPES registry with a primary specialty of Neurology Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Denny located?
- Mary Denny's practice location on file with NPPES is 6410 Fannin St, Houston, TX 77030-3000.
- What is Mary Denny's phone number?
- The practice phone number listed in the NPPES registry for Mary Denny is (832) 325-7080.
- Does Mary Denny accept Medicare?
- Mary Denny is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Denny's NPI active?
- Yes — Mary Denny's NPI (1558688994) is active in the NPPES registry as of the last update on 2016-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.