Nathaniel Loo, M.D.
NPI 1861791329 · Anesthesiology Physician · Mckinney, TX
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathaniel Loo, M.D. is a Anesthesiology Physician provider in Mckinney, TX (NPI 1861791329).
Provider details
- NPI number
- 1861791329
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- CDR.0002531 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
42 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Anesthesia for Other Procedure on Esophagus, Stomach, Or Upper Small Bowel Using an Endoscope00731 | 18 | $74 |
| Anesthesia for Other Procedure on Lower Leg, Ankle, and Foot Bones01480 | 13 | $137 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 11 | $68 |
Typical Medicare-allowed amounts for these services range $68–$137 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Additional practice locations (2)
- 10350 E Dakota AveDenver, CO 80247-1314Phone: (303) 338-4545
- 5323 Harry Hines BlvdDallas, TX 75390-7201Phone: (214) 648-7837
Registry dates
- Enumerated
- 2011-03-23
- Last updated
- 2023-09-28
- Certified
- 2023-09-28
Frequently asked questions
- What is Nathaniel Loo's NPI number?
- Nathaniel Loo's National Provider Identifier (NPI) is 1861791329, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathaniel Loo's specialty?
- Nathaniel Loo is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Nathaniel Loo located?
- Nathaniel Loo's practice location on file with NPPES is 4510 Medical Center Dr Ste 211, Mckinney, TX 75069-1602.
- What is Nathaniel Loo's phone number?
- The practice phone number listed in the NPPES registry for Nathaniel Loo is (469) 541-1600.
- Does Nathaniel Loo accept Medicare?
- Nathaniel Loo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathaniel Loo's NPI active?
- Yes — Nathaniel Loo's NPI (1861791329) is active in the NPPES registry as of the last update on 2023-09-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.