Lily Kao, MD
NPI 1578742888 · Rheumatology Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lily Kao, MD is a Rheumatology Physician provider in San Jose, CA (NPI 1578742888).
Provider details
- NPI number
- 1578742888
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A100943 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 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
1,227 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 | 430 | $147 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 285 | $9 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 232 | $18 |
| Complete Ultrasound Scan of Joint76881 | 91 | $62 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $103 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 43 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 618 | 111 |
| Hydroxychloroquine Sulfate | 227 | 64 |
| Alendronate Sodium | 184 | 54 |
| Leflunomide | 149 | 30 |
| Prednisone | 101 | 18 |
| Etanerceptbrand: Enbrel Mini | 88 | 12 |
| Folic Acid | 84 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,414 across 173 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
- 2007-11-02
- Last updated
- 2023-11-11
- Certified
- 2023-11-11
Frequently asked questions
- What is Lily Kao's NPI number?
- Lily Kao's National Provider Identifier (NPI) is 1578742888, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lily Kao's specialty?
- Lily Kao is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Lily Kao located?
- Lily Kao's practice location on file with NPPES is 2690 S White Rd Ste 50, San Jose, CA 95148.
- What is Lily Kao's phone number?
- The practice phone number listed in the NPPES registry for Lily Kao is (408) 223-7000.
- Does Lily Kao accept Medicare?
- Lily Kao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lily Kao's NPI active?
- Yes — Lily Kao's NPI (1578742888) is active in the NPPES registry as of the last update on 2023-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.