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Dr. Gerald Acheson Dunlap , MD

Internal Medicine β€’ Beaverton, OR

Active NPI 1144497009 Individual Practitioner Male Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

4855 Sw Western Ave
Beaverton, OR 970053460

Call 8008132000 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

4855 Sw Western Ave

Beaverton, OR 970053460

Telephone 8008132000
Organization at the Same NPPES Address or Phone
Kaiser Foundation Health Plan Of The Northwest Facility NPI 1366497778

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Oregon City, OR. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: Kaiser Foundation Health Plan Of The Northwest. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Oregon Health Sciences University School Of Medicine

Graduation Year

2007

30-day fills

13,435 standardized 30-day fills in 2024

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$194,111 in 2024

The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.

Industry payments (Open Payments)

Fewer than 11 payment records totaling $127.87 in 2025

Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.

These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.

General: payments not tied to research, such as meals, travel, consulting or speaking fees.

A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.

Source: CMS Open Payments, program year 2025.

Guide: How to read an Open Payments record

Years since graduation

19 years (graduated 2007)

CMS Doctors and Clinicians data list 2007 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2008

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Dunlap has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Dunlap as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Beaverton and Oregon

Billing and prescribing volume is not a quality rating.

Medicare Part D prescriptions

Close to the middle for clinicians listed under Internal Medicine in Beaverton, OR (2024, 37 clinicians with data). Median for this group: 4,025. Middle half: 1,358 to 7,171.

More Part D prescriptions than 75% of clinicians listed under Internal Medicine in Oregon (2024, 1,208 clinicians with data). Median for this group: 565. Middle half: 88 to 4,339.

Part D drug cost

Close to the middle for clinicians listed under Internal Medicine in Beaverton, OR (2024, 37 clinicians with data). Median for this group: $214,481. Middle half: $58,213 to $397,037.

A higher Part D drug cost than 65% of clinicians listed under Internal Medicine in Oregon (2024, 1,208 clinicians with data). Median for this group: $35,352. Middle half: $2,511 to $309,543.

46 active clinicians are listed under Internal Medicine with a practice address in Beaverton, OR (2,118 in Oregon).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Beaverton

30.4% of these 46 clinicians have the CMS telehealth indicator.

71.7% of these 46 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $127.87.

Manufacturer Payment Nature Product Type Amount ($)
Pulse Biosciences, Inc.
Food and Beverage
In-kind items and services
CELLFX General $127.87

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2024.

CMS Part D Β· Data Year 2024
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Atorvastatin Calcium Atorvastatin Calcium 698 61,371 $7,775.86 201
Lisinopril Lisinopril 398 34,626 $4,492.16 119
Losartan Potassium Losartan Potassium 253 21,240 $2,771.16 73
Amlodipine Besylate Amlodipine Besylate 214 17,985 $2,334.06 69
Gabapentin Gabapentin 178 10,910 $3,552.97 42
Levothyroxine Sodium Levothyroxine Sodium 172 14,460 $2,886.81 45
Hydrochlorothiazide Hydrochlorothiazide 170 13,230 $1,693.00 44
Metformin Hcl Metformin Hcl 159 13,581 $1,723.12 46
Rosuvastatin Calcium Rosuvastatin Calcium 155 13,830 $1,703.01 50
Tamsulosin Hcl Tamsulosin Hcl 140 11,271 $2,119.43 45
Simvastatin Simvastatin 135 11,670 $1,428.61 38
Metoprolol Tartrate Metoprolol Tartrate 120 9,240 $1,170.32 36
Pradaxa Dabigatran Etexilate Mesylate 112 8,760 $29,092.24 39
Lisinopril-Hydrochlorothiazide Lisinopril/Hydrochlorothiazide 105 8,775 $1,230.21 35
Albuterol Sulfate Hfa Albuterol Sulfate 105 2,979 $1,957.35 54
Sertraline Hcl Sertraline Hcl 104 8,444 $1,178.80 31
Metformin Hcl Er Metformin Hcl 97 8,294 $858.61 29
Atenolol Atenolol 89 7,836 $1,019.87 29
Trazodone Hcl Trazodone Hcl 82 5,142 $952.53 26
Metoprolol Succinate Metoprolol Succinate 78 7,020 $857.72 25
Glipizide Glipizide 64 5,715 $627.13 21
Allopurinol Allopurinol 63 5,550 $842.45 20
Alendronate Sodium Alendronate Sodium 61 4,637 $572.15 21
Omeprazole Omeprazole 57 3,921 $512.54 15
Pantoprazole Sodium Pantoprazole Sodium 54 4,590 $901.88 18

(top 25 shown)

Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2026-05-05
Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES OR MD151063

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Internal Medicine

NUCC Taxonomy Code: 207R00000X

License # reported to NPPES OR LL17373

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Oregon Medical Board.
Look Up on State Board Site

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid ID
500623081 (OR)
Other Identifier Rr Medicare
P00940164 (OR)

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - INTERNAL MEDICINE

Medicare Enrollment ID

I20190826003904

Enrollment State Jurisdiction

WA

PECOS Control ID

9537284351

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

Kaiser Foundation Health Plan Of The Northwest

4855 Sw Western Ave, Beaverton, OR 970053460

Phone: 8008132000

Secondary Practice Locations

1510 Division St, Suite 200

Oregon City, OR 970451581

Phone: 5036506880

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

28 listed
Allyson Adams

Family Medicine

NPI 1043899537
Dr. Amy Barnes , DO

Obstetrics & Gynecology

NPI 1053534313

Doctor of Osteopathic Medicine (D.O.)

Julia Barron , PA-C

Physician Assistant - Medical

NPI 1053570424

Physician Assistant (Certified)

Dr. Rachel Brandl , DO

Orthopaedic Surgery

NPI 1013440858

Doctor of Osteopathic Medicine (D.O.)

Dr. Ching-Wen Chang , MD

Radiology - Diagnostic Radiology

NPI 1053556035

Doctor of Medicine (M.D.)

Dr. Carol Chiu , MD

Obstetrics & Gynecology

NPI 1043458839

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
πŸ“
Updated Practice Location May 05, 2026

Registered at 4855 SW WESTERN AVE, BEAVERTON, OR 970053460 (Tel: 8008132000)

πŸ“
Updated Business Mailing Address May 05, 2026

Registered at 500 NE MULTNOMAH ST STE 100, PORTLAND, OR 972322031

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) May 05, 2026

Internal Medicine (license number reported to NPPES: OR LL17373)

βœ…
NPI Profile Active October 03, 2012

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) October 03, 2012

Registered at 1510 DIVISION ST, SUITE 200, OREGON CITY, OR 970451581 (Tel: 5036506880)

πŸ“
Business Mailing Address (Initial Record) October 03, 2012

Registered at PO BOX 3158, PORTLAND, OR 972083158

πŸ‘€
Provider Name / Credentials (Initial Record) October 03, 2012

Recorded as GERALD DUNLAP, MD

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) October 03, 2012

Internal Medicine (license number reported to NPPES: OR MD151063)

🟒
Initial NPI Registration & Enumeration May 09, 2008

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1144497009
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: May 09, 2008
Last Update: May 05, 2026
Sole Proprietor: No

Other Internal Medicine Providers in Beaverton

All Internal Medicine Providers in Beaverton

Mailing Address

500 Ne Multnomah St Ste 100

Portland, OR 972322031

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.