Robert Marks, M.D.
NPI 1447450796 · Pain Medicine (Anesthesiology) Physician · Austin, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Marks, M.D. is a Pain Medicine (Anesthesiology) Physician provider in Austin, TX (NPI 1447450796).
Provider details
- NPI number
- 1447450796
- Entity type
- Individual
- Primary specialty
- Pain Medicine (Anesthesiology) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- N8949 (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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,869 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,060 | $126 |
| Testing for Presence of Drug, Read By Direct Observation80305 | 257 | $12 |
| Testing for Presence of Drug, By Chemistry Analyzers80307 | 81 | $58 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 68 | $175 |
| Use of a Drug to Induce Depression of Consciousness By Physician Performing a Procedure (5 Years Or Older), Initial 15 Minutes99152 | 42 | $49 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 549 | 180 |
| Oxycodone Hcl | 166 | 44 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 124 | 40 |
| Morphine Sulfatebrand: Morphine Sulfate Er | 74 | 15 |
| Celecoxib | 70 | 23 |
| Duloxetine Hcl | 67 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$6,270 across 105 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
Additional practice locations (1)
- 3345 Bee Caves RdSuite 101West Lake Hills, TX 78746-6772Phone: (512) 981-7246Fax: (512) 981-7246
Registry dates
- Enumerated
- 2007-07-24
- Last updated
- 2021-04-20
- Certified
- 2021-04-20
Frequently asked questions
- What is Robert Marks's NPI number?
- Robert Marks's National Provider Identifier (NPI) is 1447450796, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Marks's specialty?
- Robert Marks is listed in the NPPES registry with a primary specialty of Pain Medicine (Anesthesiology) Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Marks located?
- Robert Marks's practice location on file with NPPES is 12176 N Mopac Expy Ste D, Austin, TX 78758-2908.
- What is Robert Marks's phone number?
- The practice phone number listed in the NPPES registry for Robert Marks is (512) 981-7246.
- Does Robert Marks accept Medicare?
- Robert Marks is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Marks's NPI active?
- Yes — Robert Marks's NPI (1447450796) is active in the NPPES registry as of the last update on 2021-04-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.