Randolph Chen, MD
NPI 1962502872 · Nephrology Physician · Belmont, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Randolph Chen, MD is a Nephrology Physician provider in Belmont, CA (NPI 1962502872).
Provider details
- NPI number
- 1962502872
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A37526 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,122 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 609 | $113 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 237 | $400 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 121 | $132 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 100 | $259 |
| Dialysis Services, 2-3 Physician Visits Per Month (20 Years Or Older)90961 | 30 | $334 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 391 | 122 |
| Amlodipine Besylate | 199 | 63 |
| Metoprolol Succinate | 192 | 59 |
| Doxazosin Mesylate | 150 | 42 |
| Calcitriol | 112 | 33 |
| Hydrochlorothiazide | 94 | 26 |
| Chlorthalidone | 88 | 31 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,593 across 45 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
- 2006-09-22
- Last updated
- 2008-05-16
Frequently asked questions
- What is Randolph Chen's NPI number?
- Randolph Chen's National Provider Identifier (NPI) is 1962502872, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Randolph Chen's specialty?
- Randolph Chen is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Randolph Chen located?
- Randolph Chen's practice location on file with NPPES is 1301 Shoreway Rd, Belmont, CA 94002-4151.
- What is Randolph Chen's phone number?
- The practice phone number listed in the NPPES registry for Randolph Chen is (650) 596-7000.
- Does Randolph Chen accept Medicare?
- Randolph Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Randolph Chen's NPI active?
- Yes — Randolph Chen's NPI (1962502872) is active in the NPPES registry as of the last update on 2008-05-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.