Diana Chen, DO
NPI 1427547488 · Internal Medicine Physician · Houston, TX
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Chen, DO is a Internal Medicine Physician provider in Houston, TX (NPI 1427547488).
Provider details
- NPI number
- 1427547488
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
8 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
430 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) |
|---|---|---|
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 193 | $171 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 126 | $79 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 66 | $131 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 26 | $119 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 19 | $114 |
Typical Medicare-allowed amounts for these services range $79–$171 (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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2018-05-05
- Last updated
- 2021-07-12
- Certified
- 2021-07-12
Frequently asked questions
- What is Diana Chen's NPI number?
- Diana Chen's National Provider Identifier (NPI) is 1427547488, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Chen's specialty?
- Diana Chen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Diana Chen located?
- Diana Chen's practice location on file with NPPES is 1701 Sunset Blvd, Houston, TX 77005-1798.
- What is Diana Chen's phone number?
- The practice phone number listed in the NPPES registry for Diana Chen is (713) 526-5511.
- Does Diana Chen accept Medicare?
- Diana Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Chen's NPI active?
- Yes — Diana Chen's NPI (1427547488) is active in the NPPES registry as of the last update on 2021-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.