DR. DAVID LARSON DEMILL M.D.
NPI 1366783631
Ophthalmology - Cornea and External Diseases Specialist in Portland, OR

Q: What is David Demill's NPI number?

The NPI number for David Demill is 1366783631. It was assigned to this individual provider in the NPPES registry on March 11, 2013.

Q: What is David Demill's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Cornea and External Diseases Specialist, with taxonomy code 207WX0120X.

Q: When was this NPI record last updated?

The NPPES record for David Demill was last updated on May 2, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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 11, 2013PECOS EnrolledAccepts Medicare Assignment

1040 NW 22ND AVE, PORTLAND, OR 97210(503) 413-8498 Get Directions Write a Review

NPPES record last updated: May 2, 2019. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: May 2, 2019, Mar 22, 2016, Nov 23, 2015 (3 updates tracked since 2015).

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About Dr. David Larson Demill M.d. NPPES

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

DR. DAVID LARSON DEMILL M.D. (NPI 1366783631) is an individual cornea and external diseases specialist in Portland, Oregon, licensed in North Dakota (15521) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS, is affiliated with Intermountain Medical Center, and is a graduate of University Of Utah School Of Medicine (2012).

NPPES Registry Identity

NPI1366783631

Entity TypeIndividualMale

Primary Taxonomy207WX0120X

Provider Legal NameDR. DAVID LARSON DEMILLCredential: M.D.

Location Address1040 NW 22ND AVEPortland, OR 97210-3057

Mailing Address1040 Nw 22nd AvePortland, OR 97210-3057 · (503) 413-8498

Phone(503) 413-8498

Sole ProprietorNo

Medical School CMSUniversity Of Utah School Of MedicineGraduated 2012

Enumeration DateMarch 11, 2013

Last NPPES UpdateMay 2, 20193 updates tracked since enumeration

✔ NPI 1366783631 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOphthalmology · Cornea and External Diseases SpecialistAllopathic & Osteopathic Physicians

Taxonomy Code207WX0120X

Licenses✔ Licensed in ND · 15521✔ Licensed in UT · 10215714-8905✔ Licensed in IN · 01081680A

Definition

An ophthalmologist who specializes in diseases of the cornea, sclera, eyelids, conjunctiva, and anterior segment of the eye.

1040 NW 22ND AVE, Portland, OR 97210

Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.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

Dr. David Larson Demill 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 ID6204131618

PECOS Enrollment IDI20170616000993

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 David Demill reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Ihc Health Services Inc

586 mi

Clinic/Center

905 N 1000 W, BEAR RIVER HOSPITALISTS
Tremonton, UT 84337

Reassigned Medicare billing, Utah enrollment
3,691 clinicians in this Medicare group

NPI 1184082141 (435) 207-4720

Corey A Miller MD PC

635 mi

Ophthalmology

1485 E 3900 S, STE 103
Salt Lake City, UT 84124

Reassigned Medicare billing, Utah enrollment
3 clinicians in this Medicare group

NPI 1689693814 (801) 277-1087

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 12

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.

318 services307 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.

226 services127 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.

205 services170 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.

190 services124 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.

171 services116 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.

142 services136 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.

83 services83 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).

51 services49 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.

50 services49 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.

37 services36 patients

Ct scan of cornea 92025

A CT scan of the cornea is a non-invasive imaging test that uses X-rays to capture detailed pictures of your eye's cornea. It helps in diagnosing diseases or damage, planning for surgery, or evaluating the results of a treatment. It's a safe and painless procedure.

13 services11 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.

12 services12 patients

Hospital Affiliations CMS Care Compare 2

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

Intermountain Medical Center

Acute Care Hospitals · Murray, UT

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number460010

Location5121 South Cottonwood StreetMurray, UT 84107 · Salt Lake County

Emergency services Birthing friendly

St Mark's Hospital

Acute Care Hospitals · Salt Lake City, UT

3/5 CMS rating

OwnershipProprietary

CMS Certification Number460047

Location1200 East 3900 SouthSalt Lake City, UT 84124 · Salt Lake County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97210 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

$134.16 typical visit price

range $58.99 – $176.88

Typical copayment $33.54 (range $14.74 – $44.22)

Most-billed visit code 99204

Established Patient

$73.28 typical visit price

range $19.32 – $144.79

Typical copayment $18.32 (range $4.83 – $36.19)

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 20

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

PACIFIC HEART ASSOCIATES, P.C.

Specialist

1040 NW 22ND AVE, SUITE 660
PORTLAND, OR 97210

Multnomah County (503) 790-1234

DR. GARY ALLEN WARD M.D.

Physical Medicine & Rehabilitation

1040 NW 22ND AVE, SUITE 320
PORTLAND, OR 97210

Multnomah County (503) 413-6294

MYRON D. SMITH

Audiologist

1040 NW 22ND AVE, SUITE 460
PORTLAND, OR 97210

Multnomah County (503) 413-8154

DR. ALIZAH RABIN ROTRAMEL M.D.

Colon & Rectal Surgery

1040 NW 22ND AVE, SUITE 540
PORTLAND, OR 97210

Multnomah County (503) 413-5525

MR. PATRICK STEVEN SAWYER PA-C

Physician Assistant (Surgical)

1040 NW 22ND AVE, SUITE 500
PORTLAND, OR 97210

Multnomah County (503) 227-5050

NW SURGICAL ONCOLOGY PC

Surgery (Surgical Oncology)

1040 NW 22ND AVE, SUITE 540
PORTLAND, OR 97210

Multnomah County (503) 517-9030

DR. MARTA PAZOS LOPEZ MD

Student in an Organized Health Care Education/Training Program

1040 NW 22ND AVE, SUITE 200
PORTLAND, OR 97210

Multnomah County (503) 413-8202

DR. WILLIAM THOMAS SHULTS I MD

Ophthalmology

1040 NW 22ND AVE, SUITE 200
PORTLAND, OR 97210

Multnomah County (503) 413-8032

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 David Demill's NPI number?

The NPI number for David Demill is 1366783631. It was assigned to this individual provider in the NPPES registry on March 11, 2013.

Where is David Demill located?

David Demill practices at 1040 NW 22nd Ave, Portland, OR 97210. The listed phone number is (503) 413-8498.

What is David Demill's specialty?

The primary specialty registered for this NPI is Ophthalmology, specializing in Cornea and External Diseases Specialist, with taxonomy code 207WX0120X.

Is David Demill enrolled in Medicare?

Yes. David Demill 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.

Which organizations bill Medicare for David Demill's services?

According to the CMS Revalidation Reassignment List (October 2026 release), David Demill reassigns Medicare benefits to 2 organizations: Ihc Health Services Inc (Tremonton, UT) and Corey A Miller MD PC (Salt Lake City, UT). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for David Demill's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does David Demill accept?

Health plans from Select Health list David Demill as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is David Demill affiliated with any hospitals?

According to CMS data, David Demill is affiliated with Intermountain Medical Center and St Mark's Hospital.

When was this NPI record last updated?

The NPPES record for David Demill was last updated on May 2, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.