David Chen, MD
NPI 1124037254 · Internal Medicine Physician · Hartford, WI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Chen, MD is a Internal Medicine Physician provider in Hartford, WI (NPI 1124037254).
Provider details
- NPI number
- 1124037254
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 33242 (WI)
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
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
137 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 41 | $83 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 34 | $156 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 25 | $120 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 21 | $73 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 16 | $75 |
Typical Medicare-allowed amounts for these services range $73–$156 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 51 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 119 | 63 |
| Lisinopril | 104 | 57 |
| Amlodipine Besylate | 91 | 43 |
| Levothyroxine Sodium | 76 | 36 |
| Pantoprazole Sodium | 72 | 35 |
| Simvastatin | 66 | 29 |
| Hydrochlorothiazide | 62 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-07
- Last updated
- 2022-07-13
- Certified
- 2022-07-13
Frequently asked questions
- What is David Chen's NPI number?
- David Chen's National Provider Identifier (NPI) is 1124037254, 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 Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is David Chen located?
- David Chen's practice location on file with NPPES is 1640 E Sumner St, Hartford, WI 53027.
- What is David Chen's phone number?
- The practice phone number listed in the NPPES registry for David Chen is (262) 670-4000.
- 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 (1124037254) is active in the NPPES registry as of the last update on 2022-07-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.