Robert Hsiao, MD
NPI 1396700514 · Internal Medicine Physician · Phoenix, MD
Enrolled with Medicare as Practitioner - Geriatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Hsiao, MD is a Internal Medicine Physician provider in Phoenix, MD (NPI 1396700514).
Provider details
- NPI number
- 1396700514
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0035305 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
959 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 237 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 122 | $127 |
| X-Ray of Chest, 2 Views71046 | 72 | $31 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 61 | $116 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 54 | $9 |
| Detection Test By Immunoassay Technique for Severe Acute Respiratory Syndrome Coronavirus and Influenza87428 |
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 |
|---|---|---|
| Doxycycline Hyclate | 34 | 34 |
| Azithromycin | 22 | 22 |
| Rosuvastatin Calcium | 17 | — |
| Amoxicillin | 15 | 15 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 13 | 13 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 13 | 13 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim |
Practice location
Mailing address
Additional practice locations (1)
- 10755 Falls ChurchSuite 160Lutherville, MD 21093-2109Phone: (410) 583-2777
Registry dates
- Enumerated
- 2006-04-19
- Last updated
- 2022-02-21
- Certified
- 2022-02-09
Frequently asked questions
- What is Robert Hsiao's NPI number?
- Robert Hsiao's National Provider Identifier (NPI) is 1396700514, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Hsiao's specialty?
- Robert Hsiao is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Hsiao located?
- Robert Hsiao's practice location on file with NPPES is 3346 Paper Mill Rd, Phoenix, MD 21131-1419.
- What is Robert Hsiao's phone number?
- The practice phone number listed in the NPPES registry for Robert Hsiao is (410) 666-4060.
- Does Robert Hsiao accept Medicare?
- Robert Hsiao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Hsiao's NPI active?
- Yes — Robert Hsiao's NPI (1396700514) is active in the NPPES registry as of the last update on 2022-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.