ALEXANDRA G CASTILLEJOS ELLENTHAL MD
NPI 1144780933
Ophthalmology in Chula Vista, CA

Q: What is Alexandra Castillejos Ellenthal's NPI number?

The NPI number for Alexandra Castillejos Ellenthal is 1144780933. It was assigned to this individual provider in the NPPES registry on March 20, 2019.

Q: What is Alexandra Castillejos Ellenthal's specialty?

The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.

Active since March 20, 2019PECOS EnrolledAccepts Medicare Assignment

342 F ST, CHULA VISTA, CA 91910(619) 422-1471 Get Directions Write a Review

NPPES record last updated: February 19, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 8, 2025, Sep 11, 2020, Mar 20, 2019 (3 updates tracked since 2019).

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About Alexandra G Castillejos Ellenthal Md NPPES

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

ALEXANDRA G CASTILLEJOS ELLENTHAL MD (NPI 1144780933) is an individual ophthalmology provider in Chula Vista, California, licensed in California (A201789) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1144780933

Entity TypeIndividualFemale

Primary Taxonomy207W00000X

Provider Legal NameALEXANDRA G CASTILLEJOS ELLENTHALCredential: MD

Location Address342 F STChula Vista, CA 91910-2625

Mailing Address342 F StChula Vista, CA 91910-2625 · (619) 422-1471

Phone(619) 422-1471

Sole ProprietorNo

Medical School CMSOtherGraduated 2019

Enumeration DateMarch 20, 2019

Last NPPES UpdateFebruary 19, 20263 updates tracked since enumeration

NPPES CertifiedFebruary 19, 2026

✔ NPI 1144780933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in CA · A201789

Definition

An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

342 F ST, Chula Vista, CA 91910

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Alexandra G Castillejos Ellenthal Md 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 ID5496086209

PECOS Enrollment IDI20250811002821

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.

Medicare Billing Reassignments

Medicare enrollment records show Alexandra Castillejos Ellenthal reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Emergency And Acute Care Medical Corporation

17 mi

Emergency Medicine

7901 FROST ST
San Diego, CA 92123

Reassigned Medicare billing, California enrollment
1,437 clinicians in this Medicare group

NPI 1437103942 (858) 939-3400

Castillejos Eye Institute Medical Group

44 mi

Ophthalmology

342 F ST
Chula Vista, CA 91910

Reassigned Medicare billing, California enrollment
11 clinicians in this Medicare group

NPI 1841377660 (619) 422-1471

Cape Fear Eye Associates PA

2,186 mi

Ophthalmology

1726 METRO MEDICAL DR
Fayetteville, NC 28304

Reassigned Medicare billing, North Carolina enrollment
12 clinicians in this Medicare group

NPI 1962456343 (910) 484-2284

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 11

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

88 services74 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

86 services81 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

71 services71 patients

Imaging of optic nerve 92133

Imaging of the optic nerve is a non-invasive procedure that captures detailed pictures of your optic nerve. It helps doctors assess eye health, particularly for conditions like glaucoma. It's painless, quick, and uses safe technology like MRI or OCT (Optical Coherence Tomography).

66 services65 patients

Photography of the retina 92250

Photography of the retina, also known as retinal imaging, is a non-invasive procedure that captures images of the back of your eye. This helps doctors identify and monitor conditions like glaucoma, macular degeneration, or diabetic retinopathy. It's painless and quick, often part of a routine eye exam.

57 services56 patients

Imaging of retina 92134

Imaging of the retina is a non-invasive procedure that captures detailed images of your eye's interior. This helps detect conditions like macular degeneration or retinal detachment. It's painless and takes only a few minutes.

51 services50 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91910 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

$140.22 typical visit price

range $62.10 – $184.71

Typical copayment $35.05 (range $15.52 – $46.17)

Most-billed visit code 99204

Established Patient

$76.87 typical visit price

range $20.62 – $151.42

Typical copayment $19.21 (range $5.15 – $37.85)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 10

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

DR. DUANE M BRYANT MD

Ophthalmology