Richard Chen, MD
NPI 1598929069 · Dermatology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Richard Chen, MD is a Dermatology Physician provider in Stanford, CA (NPI 1598929069).
Provider details
- NPI number
- 1598929069
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- A105615 (CA)
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
17 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
527 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 242 | $2 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 89 | $74 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 67 | $63 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $109 |
| Destruction of Skin Growth, 1-14 Growths17110 | 33 | $87 |
| Biopsy of Related Skin Growth, First Growth |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 49 | 18 |
| Triamcinolone Acetonide | 40 | 23 |
| Desonide | 32 | — |
| Ixekizumabbrand: Taltz Autoinjector | 13 | — |
| Fluocinonide | 13 | — |
| Metronidazole | 12 | — |
| Clobetasol Propionate | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 450 Broadway AveDept of Dermatology, Pavillion B, 4th FloorRedwood City, CA 94063-3132Phone: (650) 723-6316
Registry dates
- Enumerated
- 2008-07-15
- Last updated
- 2024-04-16
- Certified
- 2024-04-16
Frequently asked questions
- What is Richard Chen's NPI number?
- Richard Chen's National Provider Identifier (NPI) is 1598929069, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Richard Chen's specialty?
- Richard Chen is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Richard Chen located?
- Richard Chen's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Richard Chen's phone number?
- The practice phone number listed in the NPPES registry for Richard Chen is (650) 723-4000.
- Does Richard Chen accept Medicare?
- Richard Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Richard Chen's NPI active?
- Yes — Richard Chen's NPI (1598929069) is active in the NPPES registry as of the last update on 2024-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.