Xavier Diao, MD
NPI 1902347115 · Psychiatry Physician · King of Prussia, PA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Xavier Diao, MD is a Psychiatry Physician provider in King of Prussia, PA (NPI 1902347115).
Provider details
- NPI number
- 1902347115
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD473945 (PA)
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
9 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
283 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 135 | $101 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 84 | $17 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 38 | $66 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 26 | $181 |
Typical Medicare-allowed amounts for these services range $17–$181 (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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clonazepam | 87 | 14 |
| Sertraline Hcl | 52 | 14 |
| Lamotrigine | 27 | — |
| Escitalopram Oxalate | 23 | — |
| Duloxetine Hcl | 22 | — |
| Gabapentin | 21 | — |
| Mirtazapine | 17 | — |
Practice location
Mailing address
Additional practice locations (2)
- 53 Frontage Rd Fl 1Hampton, NJ 08827-4031Phone: (833) 351-8255
- 109 W 27th St Rm 5sNew York, NY 10001-6208Phone: (833) 351-8255
Registry dates
- Enumerated
- 2017-03-20
- Last updated
- 2025-07-30
- Certified
- 2025-07-30
Frequently asked questions
- What is Xavier Diao's NPI number?
- Xavier Diao's National Provider Identifier (NPI) is 1902347115, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Xavier Diao's specialty?
- Xavier Diao is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Xavier Diao located?
- Xavier Diao's practice location on file with NPPES is 680 American Ave Ste 302, King of Prussia, PA 19406-4023.
- What is Xavier Diao's phone number?
- The practice phone number listed in the NPPES registry for Xavier Diao is (833) 351-8255.
- Does Xavier Diao accept Medicare?
- Xavier Diao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Xavier Diao's NPI active?
- Yes — Xavier Diao's NPI (1902347115) is active in the NPPES registry as of the last update on 2025-07-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.