Ray-Young Tsao, MD
NPI 1245850775 · Emergency Medicine Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ray-Young Tsao, MD is a Emergency Medicine Physician provider in Tucson, AZ (NPI 1245850775).
Provider details
- NPI number
- 1245850775
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- R77934 (AZ)
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 tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
578 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) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 295 | $186 |
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 139 | $128 |
| Critical Care, First 30-74 Minutes99291 | 91 | $233 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 26 | $9 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 14 | $76 |
| X-Ray of Chest, 1 View71045 | 13 | $9 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 30 | 30 |
| Cephalexin | 25 | 25 |
| Methocarbamol | 19 | 18 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 17 | 17 |
| Oxycodone Hcl | 14 | 14 |
| Cefdinir | 12 | 12 |
| Doxycycline Hyclate | 12 | 12 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-04-24
- Last updated
- 2023-06-15
- Certified
- 2023-01-25
Frequently asked questions
- What is Ray-Young Tsao's NPI number?
- Ray-Young Tsao's National Provider Identifier (NPI) is 1245850775, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ray-Young Tsao's specialty?
- Ray-Young Tsao is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ray-Young Tsao located?
- Ray-Young Tsao's practice location on file with NPPES is 1625 N Campbell Ave, Tucson, AZ 85719-4330.
- What is Ray-Young Tsao's phone number?
- The practice phone number listed in the NPPES registry for Ray-Young Tsao is (520) 626-7233.
- Does Ray-Young Tsao accept Medicare?
- Ray-Young Tsao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ray-Young Tsao's NPI active?
- Yes — Ray-Young Tsao's NPI (1245850775) is active in the NPPES registry as of the last update on 2023-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.