David Larson Demill, M.D.
Cornea and External Diseases Specialist Physician · Portland, OR
David Larson Demill, M.D. is a cornea and external diseases specialist physician with a practice address in Portland, Oregon, and NPI 1366783631, issued on Mar 11, 2013. Check the license on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- David Larson Demill
- Credential
- M.D.
- Primary taxonomy
- Cornea and External Diseases Specialist Physician 207WX0120X
- License numbers
- 15521 ND
01081680A IN
10215714-8905 UT
Self-reported in NPPES; status is on the state search - Practice location
- 1040 NW 22ND Ave, Portland, OR 97210
- Phone
- (503) 413-8498
- Enumerated
- Mar 11, 2013
- Record last updated
- May 2, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170616000993); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 2012
- Entity
- Type 1 · individual
Also registered at 1040 NW 22ND Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify David Larson Demill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average cornea and external diseases specialist physician in 2024
3,017 Medicare Part D claims for 698 beneficiaries, against an average of 1,263 among the 330 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Prednisolone Acetate826 claims
- Latanoprost375 claims
- Fluorometholone359 claims
- Ofloxacin346 claims
- Doxycycline Monohydrate138 claims
- Erythromycin133 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $206.79
5 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas Inc. The 284 providers of this specialty with any payment received $3,109.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Ihc Health Services IncSalt Lake City, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cornea and External Diseases Specialist Physician providers in Oregon
There are 10 cornea and external diseases specialist physician records in Oregon.
Other cornea and external diseases specialist physician records in Oregon
- Winston Chamberlain, MD, PHDPortland, OR1710108162
- John Clements, MDPortland, OR1700907516
- Ashlin JoyePortland, OR1629531116
- Afshan Nanji, M.D.Portland, OR1134381718
- Matthew Oliva, MDMedford, OR1750450573
- Roma Pegany, MDPortland, OR1194215319
- Michael Straiko, M.D.Portland, OR1013127075
- Mark Terry, MDPortland, OR1760498737
- John Welling, MDMedford, OR1306159173
Common questions
What is David Larson Demill, M.D.'s NPI number?
David Larson Demill, M.D.'s National Provider Identifier (NPI) is 1366783631, issued on Mar 11, 2013. An NPI identifies a provider in billing; it is not a license.
Where is David Larson Demill, M.D. located?
The NPPES record lists a practice address at 1040 NW 22ND Ave, Portland, OR, 97210. Phone: (503) 413-8498. Providers update this record themselves, so call before visiting.
How can I verify David Larson Demill, M.D.'s license?
Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does David Larson Demill, M.D. prescribe under Medicare Part D?
In 2024, David Larson Demill, M.D. had 3,017 Medicare Part D claims for 698 beneficiaries; the average among cornea and external diseases specialist physician prescribers was 1,263. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.