David Marker, MD
NPI 1427375138 · Diagnostic Radiology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Marker, MD is a Diagnostic Radiology Physician provider in Houston, TX (NPI 1427375138).
Provider details
- NPI number
- 1427375138
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- Q9193 (TX)
Specialties & taxonomies
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
3,695 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 492 | $8 |
| X-Ray of Chest, 2 Views71046 | 277 | $10 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 262 | $82 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 259 | $79 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 192 | $12 |
| Drainage of Fluid From Abdominal Cavity Using Imaging Guidance49083 | 187 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$856 across 7 records (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
- 2010-04-21
- Last updated
- 2018-04-12
Frequently asked questions
- What is David Marker's NPI number?
- David Marker's National Provider Identifier (NPI) is 1427375138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Marker's specialty?
- David Marker is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is David Marker located?
- David Marker's practice location on file with NPPES is 6565 Fannin St # M204, Houston, TX 77030-2703.
- What is David Marker's phone number?
- The practice phone number listed in the NPPES registry for David Marker is (713) 441-7558.
- Does David Marker accept Medicare?
- David Marker is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Marker's NPI active?
- Yes — David Marker's NPI (1427375138) is active in the NPPES registry as of the last update on 2018-04-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.