Ernesto Casillas, M.D.
NPI 1952832354 · Pulmonary Disease Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ernesto Casillas, M.D. is a Pulmonary Disease Physician provider in San Francisco, CA (NPI 1952832354).
Provider details
- NPI number
- 1952832354
- Entity type
- Individual
- Primary specialty
- Pulmonary Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A157855 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
9 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
122 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 60 | $231 |
| Test to Examine How Well the Lungs Exchange Gases94729 | 25 | $10 |
| Test to Determine Lung Volumes Using Sensors94726 | 20 | $13 |
| Test to Measure Expiratory Airflow and Volume94010 | 17 | $9 |
Typical Medicare-allowed amounts for these services range $9–$231 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$14 across 1 record (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
- 2017-03-27
- Last updated
- 2024-09-04
- Certified
- 2024-09-04
Frequently asked questions
- What is Ernesto Casillas's NPI number?
- Ernesto Casillas's National Provider Identifier (NPI) is 1952832354, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ernesto Casillas's specialty?
- Ernesto Casillas is listed in the NPPES registry with a primary specialty of Pulmonary Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Ernesto Casillas located?
- Ernesto Casillas's practice location on file with NPPES is 513 Parnassus Ave # 111, San Francisco, CA 94143-2205.
- What is Ernesto Casillas's phone number?
- The practice phone number listed in the NPPES registry for Ernesto Casillas is (415) 476-1000.
- Does Ernesto Casillas accept Medicare?
- Ernesto Casillas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ernesto Casillas's NPI active?
- Yes — Ernesto Casillas's NPI (1952832354) is active in the NPPES registry as of the last update on 2024-09-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.