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DR. ERNESTO CASILLAS JR. M.D.
NPI 1952832354
Internal Medicine - Pulmonary Disease in San Francisco, CA

Active since March 27, 2017PECOS EnrolledAccepts Medicare Assignment
513 PARNASSUS AVE # 111, SAN FRANCISCO, CA 94143(415) 476-1000 Get Directions Write a Review

NPPES record last updated: September 4, 2024. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 4, 2024, Jun 8, 2023, Jul 2, 2020 and 2 more (5 updates tracked since 2017).

About Dr. Ernesto Casillas Jr. M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ERNESTO CASILLAS JR. M.D. (NPI 1952832354) is an individual pulmonary disease provider in San Francisco, California, licensed in California (A157855) and active in the NPI registry since March 2017. He is enrolled in Medicare PECOS and is a graduate of University Of Southern California Keck School Of Medicine (2017).

NPPES Registry Identity

NPI1952832354
Entity TypeIndividualMale
Primary Taxonomy207RP1001X
Provider Legal NameDR. ERNESTO CASILLAS JR.Credential: M.D.
Location Address513 PARNASSUS AVE # 111San Francisco, CA 94143-2205
Mailing Address513 Parnassus Ave # 111San Francisco, CA 94143-2205 · (415) 476-1000
Phone(415) 476-1000
Sole ProprietorYes
Medical School CMSUniversity Of Southern California Keck School Of MedicineGraduated 2017
Enumeration DateMarch 27, 2017
Last NPPES UpdateSeptember 4, 20245 updates tracked since enumeration
NPPES CertifiedSeptember 4, 2024
✔ NPI 1952832354 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
License✔ Licensed in CA · A157855
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedInternal MedicineTaxonomy 207R00000X · License A157855 (CA)
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X · License A157855 (CA)
513 PARNASSUS AVE # 111, San Francisco, CA 94143
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Ernesto Casillas Jr. M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7810249364
PECOS Enrollment IDI20240917002480
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
60 services19 patients
Test to examine how well the lungs exchange gases 94729
This is a test called a pulmonary function test, which helps understand the efficiency of your lungs. It measures how much air your lungs can hold, how quickly you can move air in and out of your lungs, and how well your lungs put oxygen into and remove carbon dioxide from your blood.
25 services25 patients
Test to determine lung volumes using sensors 94726
This test, called spirometry, measures lung capacity using sensors. You breathe into a mouthpiece attached to a device that records the amount and rate of air you inhale and exhale. It helps diagnose and monitor lung conditions.
20 services20 patients
Test to measure expiratory airflow and volume 94010
This test, known as spirometry, assesses how well your lungs work. It measures how much air you can inhale, how much you can exhale and how quickly you can exhale. It's non-invasive and helps diagnose conditions like asthma or COPD.
17 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94143 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$119.48 typical visit price
range $23.44 – $166.46
Typical copayment $29.87 (range $5.86 – $41.61)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers21 claims21 services$65.73 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
2 suppliers21 claims21 services$32.45 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SUDHAMAYI BHADRIRAJU M.D.
Internal Medicine (Critical Care Medicine)
513 PARNASSUS AVE # 111
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-0735
ANGELA SUEN MD
Internal Medicine (Pulmonary Disease)
513 PARNASSUS AVE # 111
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-0753
SYLVIA STELLMACHER MD
Internal Medicine (Critical Care Medicine)
513 PARNASSUS AVE # 111
SAN FRANCISCO, CA 94143
San Francisco County (154) 760-7354
DR. JONATHAN WING-CHIU LIU MD
Internal Medicine (Pulmonary Disease)
513 PARNASSUS AVE # 111
SAN FRANCISCO, CA 94143
San Francisco County (415) 476-0735

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Ernesto Casillas's NPI number?

The NPI number for Ernesto Casillas is 1952832354. It was assigned to this individual provider in the NPPES registry on March 27, 2017.

Where is Ernesto Casillas located?

Ernesto Casillas practices at 513 Parnassus Ave # 111, San Francisco, CA 94143. The listed phone number is (415) 476-1000.

What is Ernesto Casillas's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

Is Ernesto Casillas enrolled in Medicare?

Yes. Ernesto Casillas is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Ernesto Casillas was last updated on September 4, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.