Diem Chu, PA-C
NPI 1225184955 · Physician Assistant · Houston, TX
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diem Chu, PA-C is a Physician Assistant provider in Houston, TX (NPI 1225184955).
Provider details
- NPI number
- 1225184955
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA02469 (TX)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Valacyclovir Hclbrand: Valacyclovir | 57 | 22 |
| Pantoprazole Sodium | 50 | 12 |
| Sulfamethoxazole/Trimethoprimbrand: Sulfamethoxazole-Trimethoprim | 34 | — |
| Atovaquone | 28 | — |
| Tacrolimus | 20 | — |
| Ursodiol | 13 | — |
| Letermovirbrand: Prevymis | 11 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,661 across 57 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
- 2007-01-26
- Last updated
- 2007-07-09
Frequently asked questions
- What is Diem Chu's NPI number?
- Diem Chu's National Provider Identifier (NPI) is 1225184955, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diem Chu's specialty?
- Diem Chu is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Diem Chu located?
- Diem Chu's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4009.
- What is Diem Chu's phone number?
- The practice phone number listed in the NPPES registry for Diem Chu is (713) 792-6161.
- Does Diem Chu accept Medicare?
- Diem Chu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diem Chu's NPI active?
- Yes — Diem Chu's NPI (1225184955) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.