Leila Chaychi, MD
NPI 1558535203 · Endocrinology, Diabetes & Metabolism Physician · San Carlos, CA
Enrolled with Medicare as Practitioner - Endocrinology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leila Chaychi, MD is a Endocrinology, Diabetes & Metabolism Physician provider in San Carlos, CA (NPI 1558535203).
Provider details
- NPI number
- 1558535203
- Entity type
- Individual
- Primary specialty
- Endocrinology, Diabetes & Metabolism PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A127054 (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
3,097 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 High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 1,649 | $206 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, Each Additional 20 Minutes99458 | 473 | $46 |
| Management Using the Results of Remote Vital Sign Monitoring Per Calendar Month, First 20 Minutes99457 | 471 | $59 |
| Continuous Monitoring of Blood Sugar Level in Tissue Fluid Using Sensor Under Skin With Provider Supplied Equipment95250 | 124 | $198 |
| Ultrasound Scan of Head and Neck Soft Tissue76536 | 101 | $144 |
| Remote Monitoring of Physiologic Parameters, Initial Set-Up and Patient Education on Use of Equipment99453 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 81 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tirzepatidebrand: Mounjaro | 957 | 167 |
| Levothyroxine Sodiumbrand: Synthroid | 372 | 85 |
| Semaglutidebrand: Ozempic | 304 | 87 |
| Empagliflozin/Metformin Hclbrand: Synjardy Xr | 261 | 57 |
| Levothyroxine Sodium | 207 | 73 |
| Rosuvastatin Calcium | 181 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17,523 across 131 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
- 2008-04-14
- Last updated
- 2021-07-27
- Certified
- 2021-07-27
Frequently asked questions
- What is Leila Chaychi's NPI number?
- Leila Chaychi's National Provider Identifier (NPI) is 1558535203, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leila Chaychi's specialty?
- Leila Chaychi is listed in the NPPES registry with a primary specialty of Endocrinology, Diabetes & Metabolism Physician (Allopathic & Osteopathic Physicians).
- Where is Leila Chaychi located?
- Leila Chaychi's practice location on file with NPPES is 1660 San Carlos Ave, San Carlos, CA 94070-2022.
- What is Leila Chaychi's phone number?
- The practice phone number listed in the NPPES registry for Leila Chaychi is (650) 591-9933.
- Does Leila Chaychi accept Medicare?
- Leila Chaychi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leila Chaychi's NPI active?
- Yes — Leila Chaychi's NPI (1558535203) is active in the NPPES registry as of the last update on 2021-07-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.