David Chen, MD
NPI 1093941510 · Rheumatology Physician · Philadelphia, PA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Chen, MD is a Rheumatology Physician provider in Philadelphia, PA (NPI 1093941510).
Provider details
- NPI number
- 1093941510
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD439761 (PA)
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
17 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
2,104 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 | 713 | $139 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 514 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 174 | $9 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less96413 | 147 | $142 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, 1 Hour Or Less96365 | 113 | $63 |
| Aspiration And/Or Injection of Fluid From Large Joint20610 | 101 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 325 | 83 |
| Methotrexate Sodiumbrand: Methotrexate | 319 | 86 |
| Tramadol Hcl | 182 | 31 |
| Hydroxychloroquine Sulfate | 168 | 50 |
| Allopurinol | 148 | 35 |
| Gabapentin | 121 | 32 |
| Cyclobenzaprine Hcl | 84 | 25 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,149 across 115 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
- 2009-06-10
- Last updated
- 2022-06-17
- Certified
- 2022-06-17
Frequently asked questions
- What is David Chen's NPI number?
- David Chen's National Provider Identifier (NPI) is 1093941510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Chen's specialty?
- David Chen is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is David Chen located?
- David Chen's practice location on file with NPPES is 822 Pine St, Philadelphia, PA 19107-6187.
- What is David Chen's phone number?
- The practice phone number listed in the NPPES registry for David Chen is (215) 829-5358.
- Does David Chen accept Medicare?
- David Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Chen's NPI active?
- Yes — David Chen's NPI (1093941510) is active in the NPPES registry as of the last update on 2022-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.