David Siu, M.D.
NPI 1255303939 · Specialist · York, PA
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Siu, M.D. is a Specialist provider in York, PA (NPI 1255303939).
Provider details
- NPI number
- 1255303939
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD425667 (PA)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,586 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 457 | $115 |
| Dialysis Services, Per Day, Less Than Full Month Service (20 Years Or Older)90970 | 374 | $9 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 221 | $176 |
| 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 | 195 | $16 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 90 | $338 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dapagliflozin Propanediolbrand: Farxiga | 121 | 22 |
| Calcitriol | 85 | 29 |
| Furosemide | 67 | 31 |
| Empagliflozinbrand: Jardiance | 63 | 13 |
| Carvedilol | 58 | 14 |
| Cinacalcet Hcl | 50 | 13 |
| Allopurinol | 41 | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,326 across 41 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-06
- Last updated
- 2013-01-09
Frequently asked questions
- What is David Siu's NPI number?
- David Siu's National Provider Identifier (NPI) is 1255303939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Siu's specialty?
- David Siu is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is David Siu located?
- David Siu's practice location on file with NPPES is 1920 Queenswood Dr, York, PA 17403-4269.
- What is David Siu's phone number?
- The practice phone number listed in the NPPES registry for David Siu is (717) 747-3566.
- Does David Siu accept Medicare?
- David Siu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Siu's NPI active?
- Yes — David Siu's NPI (1255303939) is active in the NPPES registry as of the last update on 2013-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.