Esther Luo, M.D.
NPI 1861658585 · Internal Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Esther Luo, M.D. is a Internal Medicine Physician provider in San Jose, CA (NPI 1861658585).
Provider details
- NPI number
- 1861658585
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A104699 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Gabapentin | 64 | 22 |
| Duloxetine Hcl | 50 | 16 |
| Oxycodone Hcl | 49 | 19 |
| Hydromorphone Hcl | 41 | 12 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 38 | 12 |
| Trazodone Hcl | 19 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-08-01
- Last updated
- 2021-12-15
Frequently asked questions
- What is Esther Luo's NPI number?
- Esther Luo's National Provider Identifier (NPI) is 1861658585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Esther Luo's specialty?
- Esther Luo is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Esther Luo located?
- Esther Luo's practice location on file with NPPES is 751 S Bascom Ave, San Jose, CA 95128-2604.
- What is Esther Luo's phone number?
- The practice phone number listed in the NPPES registry for Esther Luo is (408) 885-7724.
- Does Esther Luo accept Medicare?
- Esther Luo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Esther Luo's NPI active?
- Yes — Esther Luo's NPI (1861658585) is active in the NPPES registry as of the last update on 2021-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.