Quick answers
- Does Warren A. Southerland accept Medicare assignment?
- Yes. Medicare's clinician data says Warren A. Southerland 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 Warren A. Southerland see?
- In 2024, CMS data shows 74 Original Medicare patients and 557 services for Warren A. Southerland. This counts Original Medicare only and measures volume, not quality.
- What is Warren A. Southerland's NPI number?
- 1720516487. 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 Warren A. Southerland, 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 | 74 |
|---|---|
| Services billed to Medicare | 557 |
| Different services or procedures | 35 |
| Participating Medicare provider | Yes |
| Average age of these patients | 69 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)160 services
- Evaluation of psychological test, first hour (96130)116 services
- Testing for presence of drug, by chemistry analyzers (80307)74 services
- Drug test(s), definitive, utilizing (1) drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including, but not limited to gc/ms (any type, single or tandem) and lc/ms (G0482)59 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)40 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 blood pressure75%
- Arthritis75%
- High cholesterol72%
- Anxiety42%
- Diabetes38%
- Ischemic heart disease31%
Hospitals where Warren A. Southerland works
Medicare's Facility Affiliation Data lists Warren A. Southerland 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.
- Luminis Health Anne Arundel Medical Center, IncAnnapolis, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210023
- Luminis Health Doctors Community Medical Center, IncLanham, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210051
- Memorial Hermann Houston Physicians HospitalWebster, TX · Acute Care Hospital · CCN 670008
Practice locations
Addresses where Warren A. Southerland is enrolled with Medicare (CMS data updated October 2, 2026).
- 15300 Southwest Fwy, Suite 100Sugar Land, TX 77478 (281) 274‑6670
- 1635 N Loop WHouston, TX 77008 (713) 400‑2990
- 2001 Medical PkwyAnnapolis, MD 21401 (443) 481‑1000
- 8118 Good Luck RdLanham, MD 20706 (301) 552‑8118
Group practices
Medicare enrollment lists Warren A. Southerland as a member of these groups (CMS data updated October 2, 2026).
- Anesthesia Company LLC378 clinicians in the group
- Texans Anesthesia Associates PLLC200 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Sugar Land
Clinicians with the same Medicare primary specialty in Sugar Land, TX — not a recommendation.
Other clinicians in Anesthesia Company LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Tennessee, Hsc, College Of Medicine |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1720516487 |
| 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