Tommy Chen, M.D.
NPI 1326136854 · Dermatology Physician · Pasadena, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tommy Chen, M.D. is a Dermatology Physician provider in Pasadena, CA (NPI 1326136854).
Provider details
- NPI number
- 1326136854
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- C37340 (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
491 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 200 | $92 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 66 | $129 |
| Destruction of Precancer Skin Growth, 15 Or More Growths17004 | 65 | $175 |
| Destruction of Skin Growth, 1-14 Growths17110 | 45 | $118 |
| Biopsy of Related Skin Growth, First Growth11102 | 43 | $102 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ketoconazole | 81 | 48 |
| Mometasone Furoate | 70 | 43 |
| Hydrocortisone | 47 | 39 |
| Clobetasol Propionate | 33 | 22 |
| Doxycycline Hyclate | 26 | 13 |
| Levocetirizine Dihydrochloride | 17 | — |
| Apremilastbrand: Otezla | 14 | — |
| Imiquimod | 13 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$92 across 3 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
- 2006-10-10
- Last updated
- 2008-04-24
Frequently asked questions
- What is Tommy Chen's NPI number?
- Tommy Chen's National Provider Identifier (NPI) is 1326136854, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tommy Chen's specialty?
- Tommy Chen is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Tommy Chen located?
- Tommy Chen's practice location on file with NPPES is 50 Bellefontaine St, Pasadena, CA 91105-3132.
- What is Tommy Chen's phone number?
- The practice phone number listed in the NPPES registry for Tommy Chen is (626) 793-4857.
- Does Tommy Chen accept Medicare?
- Tommy Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tommy Chen's NPI active?
- Yes — Tommy Chen's NPI (1326136854) is active in the NPPES registry as of the last update on 2008-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.