CHARLES GREGORY MADDUX M.D.
NPI 1346603974
Ophthalmology in Loma Linda, CA

Q: What is Charles Maddux's NPI number?

The NPI number for Charles Maddux is 1346603974. It was assigned to this individual provider in the NPPES registry on March 31, 2016.

Q: What is Charles Maddux's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Charles Maddux was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years 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.

Active since March 31, 2016PECOS EnrolledAccepts Medicare Assignment

68.75/100

CMS Quality Rating

11332 MOUNTAIN VIEW AVE STE C, LOMA LINDA, CA 92354(909) 558-6131(909) 558-0430 Get Directions Write a Review

NPPES record last updated: July 21, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 21, 2022, Nov 24, 2020, Mar 31, 2016 (3 updates tracked since 2016).

On this page

About Charles Gregory Maddux M.d. NPPES

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

CHARLES GREGORY MADDUX M.D. (NPI 1346603974) is an individual ophthalmology provider in Loma Linda, California, licensed in Washington (MD61051076) and active in the NPI registry since March 2016. He is enrolled in Medicare PECOS, is affiliated with Skagit Valley Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1346603974

Entity TypeIndividualMale

Primary Taxonomy207W00000X

Provider Legal NameCHARLES GREGORY MADDUXCredential: M.D.

Location Address11332 MOUNTAIN VIEW AVE STE CLoma Linda, CA 92354

Mailing Address2100 Little Mountain LnMount Vernon, WA 98274-8752 · (360) 416-6735 · Fax (360) 424-6954

Phone(909) 558-6131

Fax(909) 558-0430

Sole ProprietorNo

Medical School CMSLoma Linda University School Of MedicineGraduated 2016

Enumeration DateMarch 31, 2016

Last NPPES UpdateJuly 21, 20223 updates tracked since enumeration

NPPES CertifiedNovember 24, 2020

✔ NPI 1346603974 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOphthalmologyAllopathic & Osteopathic Physicians

Taxonomy Code207W00000X

License✔ Licensed in WA · MD61051076

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.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

11332 MOUNTAIN VIEW AVE STE C, Loma Linda, CA 92354

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Secondary Practice Locations 2

Location 12160 S 1st AveMaywood, IL 60153-3328 · Phone (708) 216-5368 · Fax (708) 216-3375

Location 22131 Hospital DrSedro Woolley, WA 98284-4301 · Phone (360) 416-6735 · Fax (360) 424-6954

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

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

Charles Gregory Maddux 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 ID547553695

PECOS Enrollment IDI20200619002213

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 Reassignment

Medicare enrollment records show Charles Maddux reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

North Cascade Eye Associates Ps

1,025 mi

Ophthalmology

2100 LITTLE MOUNTAIN LN
Mount Vernon, WA 98274

Reassigned Medicare billing, Washington enrollment
15 clinicians in this Medicare group

NPI 1093750481 (360) 416-6735

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 17

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 complete exam of visual system 92014

An established patient complete exam of the visual system involves a thorough check of your eyes and vision. It assesses eye health, checks for diseases, and measures your ability to see clearly at different distances. It's a routine, non-invasive procedure.

513 services504 patients

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.

329 services235 patients

Measurement of corneal curvature and depth of eye 92136

This procedure measures the shape and depth of your eye, specifically the cornea, the clear front surface. It helps in diagnosing conditions, planning for surgeries, or fitting contact lenses. It's non-invasive and painless.

213 services141 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.

209 services193 patients

Removal of cataract with insertion of prosthetic lens 66984

This is a procedure where a cloudy lens in your eye, known as a cataract, is removed. After removal, a clear artificial lens is inserted. This helps to restore your vision, enabling you to see clearly again.

203 services112 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.

203 services120 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).

105 services99 patients

Compounded drug, not otherwise classified J7999

A compounded drug is a personalized medication created to meet unique patient needs. If you can't take standard drugs due to allergies or need a specific dosage not commercially available, a pharmacist can mix ingredients to make a drug specifically for you.

97 services25 patients

Injection of drug into eye 67028

An injection into the eye is a procedure where a medication is delivered directly into your eye to treat various conditions. A local anesthetic is applied to numb the eye, ensuring minimal discomfort. The drug helps manage diseases like macular degeneration or diabetic retinopathy.

81 services25 patients

New patient complete exam of visual system 92004

A new patient complete exam of the visual system is a thorough evaluation of your eyes and vision. It checks for any potential issues and assesses overall eye health. It includes tests for visual acuity, eye movement, and light response.

72 services72 patients

Exam of visual field with extended testing 92083

An extended visual field exam is a detailed test to evaluate your peripheral (side) vision. It helps to detect any potential blind spots which may not be noticeable in daily life. These could be caused by eye diseases like glaucoma, or neurological conditions.

58 services57 patients

Established patient problem focused exam of visual system 92012

This is a routine check-up for existing patients focusing on the visual system. It involves examining your eyes to detect any potential issues or changes in your vision. It's a crucial part of maintaining good eye health.

56 services53 patients

Removal of recurring cataract in lens capsule using a laser 66821

This procedure, known as YAG laser capsulotomy, treats cloudiness in the lens capsule following cataract surgery. A laser is used to create a small hole in the cloudy capsule, allowing light to pass through and restore clear vision. It's a quick, painless procedure.

49 services48 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.

34 services34 patients

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203

This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.

28 services28 patients

Closure of tear duct opening using plug 68761

Closure of the tear duct opening using a plug is a procedure to address excessive tear production. A small device is inserted into the tear duct to block it, reducing tear flow and relieving symptoms. This is a safe, reversible process, often performed in-office.

16 services15 patients

Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more 99212

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

13 services13 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Skagit Valley Hospital

Acute Care Hospitals · Mount Vernon, WA

3/5 CMS rating

OwnershipGovernment - Hospital District or Authority

CMS Certification Number500003

Location1415 E Kincaid StreetMount Vernon, WA 98274 · Skagit County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92354 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

$136.04 typical visit price

range $59.60 – $179.42

Typical copayment $34.01 (range $14.90 – $44.85)

Most-billed visit code 99204

Established Patient

$74.08 typical visit price

range $19.37 – $146.42

Typical copayment $18.52 (range $4.84 – $36.60)

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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

68.75/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored as part of a group practice

Quality

100

Promoting Interoperability

Improvement Activities

Cost

79.19

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.

Frames, purchases V2020

Other-Vision, Hearing, and Speech Services · category OC000N

3 suppliers15 claims15 services$50.27 avg. paid by Medicare

Spherocylinder, trifocal, plano to plus or minus 4.00d sphere, .12-2.00d cylinder, per lens V2303

Other-Vision, Hearing, and Speech Services · category OC000N

3 suppliers17 claims28 services$57.81 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 8

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

CRESTLINE PSYCHIATRY

Psychiatry & Neurology (Psychiatry)