Quick answers
- Does Nathan H. Merritt accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan H. Merritt accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Nathan H. Merritt see?
- In 2024, CMS data shows 172 Original Medicare patients and 206 services for Nathan H. Merritt. This counts Original Medicare only and measures volume, not quality.
- What is Nathan H. Merritt's NPI number?
- 1396942801. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Nathan H. Merritt, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 172 |
|---|---|
| Services billed to Medicare | 206 |
| Different services or procedures | 44 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Anesthesia for lens surgery (00142)28 services
- Anesthesia for exam of colon using an endoscope (00812)19 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)13 services
- Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)12 services
- Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure73%
- Arthritis65%
- Ischemic heart disease31%
- Diabetes30%
- Anxiety28%
Hospitals where Nathan H. Merritt works
Medicare's Facility Affiliation Data lists Nathan H. Merritt at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Baylor Medical Center at Trophy ClubTrophy Club, TX · Acute Care Hospital · Emergency services: listed by Medicare · CCN 450883
- Methodist Southlake Medical CenterSouthlake, TX · Acute Care Hospital · Emergency services: listed by Medicare · CCN 670132
Practice locations
Addresses where Nathan H. Merritt is enrolled with Medicare (CMS data updated October 2, 2026).
- 14850 Quorum Dr, Suite 400Dallas, TX 75254 (469) 437‑3564
Group practices
Medicare enrollment lists Nathan H. Merritt as a member of this group (CMS data updated October 2, 2026).
- Valiant Anesthesia Associates, PLLC57 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Dallas
Clinicians with the same Medicare primary specialty in Dallas, TX — not a recommendation.
Other clinicians in Valiant Anesthesia Associates, PLLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396942801 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians