Active NPI 1669440350 Individual Practitioner Male Practitioner

Dr. David Patrick O'brien , MD

Colon & Rectal Surgery • Portland, OR

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. David O'Brien, MD is a certified Colon & Rectal Surgery practicing in Portland, OR. With approximately 29 years of clinical experience since graduating from Emory University School Of Medicine in 1997, Dr. O'Brien delivers high-quality medical care to the local community at 4805 NE GLISAN ST.

Dr. O'Brien is affiliated with The Oregon Clinic, Pc and accepts Medicare assignment.

Frequently performed procedures and clinical services include diagnostic examination of rectum and large bowel using an endoscope, established patient outpatient office visit, new patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

4805 Ne Glisan St
Suite 6n60

Portland, OR 972132933

Telephone 5032810561

Fax 5034167377

Associated Practice Facility / Clinic

🏢 Eugene Borkan, Md, Pc Facility NPI 1497760300

Medicare Profile & Education

Medical School

Emory University School Of Medicine

Graduation Year

1997

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Colon & Rectal Surgery in Portland, OR

Senior Veteran Specialist (>20 Yrs)

Practitioner Clinical Experience

29 Yrs +6.6 yrs vs City Avg

City Avg: 22.4 Yrs

State Avg: 20.9 Yrs

Regional Practice Density

26 Specialists

Practicing in Portland, OR (33 Statewide)

Telehealth Adoption Rate

46.2% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

70.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. O'brien (29 Years) 29 Yrs

Portland Specialty Average (22.4 Years) 22.4 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2024)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	35	35	$443.00	$127.29
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	28	24	$623.00	$184.24
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	25	22	$443.00	$131.29
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	22	22	$577.00	$164.94
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	16	16	$761.00	$224.37
99213 Established patient office or other outpatient visit, typically 15 minutes	11	11	$314.00	$93.32

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	68	62	$445.00	$126.43
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	49	42	$436.00	$130.74
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	38	38	$568.00	$169.19
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	25	19	$611.00	$182.81
99213 Established patient office or other outpatient visit, typically 15 minutes	23	21	$308.00	$92.60
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	23	23	$750.00	$213.37
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	13	13	$383.00	$114.49

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	47	43	$408.00	$123.72
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	33	28	$394.00	$132.03
99213 Established patient office or other outpatient visit, typically 15 minutes	33	27	$279.00	$93.13
46500 Injection of hemorrhoid	19	11	$1006.00	$341.74
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	18	18	$680.00	$225.44
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	16	16	$515.00	$160.15
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	12	12	$555.00	$185.05

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	45	40	$412.00	$128.42
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	26	23	$395.00	$130.90
99213 Established patient office or other outpatient visit, typically 15 minutes	24	21	$278.00	$92.73
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$342.00	$115.87
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	20	20	$675.00	$227.78
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	12	$551.00	$186.85
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	14	14	$511.00	$157.24

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	41	39	$370.00	$126.60
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	26	21	$321.00	$112.72
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	24	21	$432.00	$147.14
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	24	24	$318.00	$111.26
99213 Established patient office or other outpatient visit, typically 15 minutes	19	16	$222.00	$77.85
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	15	15	$614.00	$213.25

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	48	47	$364.00	$125.07
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	40	33	$321.00	$111.18
99231 Follow-up hospital inpatient care per day, typically 15 minutes	33	12	$117.00	$39.71
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	26	26	$611.00	$208.01
99213 Established patient office or other outpatient visit, typically 15 minutes	23	17	$219.00	$77.08
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	22	22	$320.00	$112.11
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	14	13	$431.00	$150.75

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	62	60	$376.00	$119.09
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	55	38	$319.00	$107.93
99213 Established patient office or other outpatient visit, typically 15 minutes	51	43	$216.00	$73.35
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	25	25	$320.00	$110.26
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	22	22	$614.00	$203.13
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	20	16	$431.00	$141.28
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	18	18	$488.00	$163.32
46500 Injection of hemorrhoid	17	13	$568.00	$197.80

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
45300 Diagnostic examination of rectum and large bowel using an endoscope	63	57	$369.00	$119.80
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	46	37	$318.00	$106.20
99213 Established patient office or other outpatient visit, typically 15 minutes	41	34	$216.00	$74.33
99205 New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more	26	26	$612.00	$208.68
99215 Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more	18	16	$428.00	$146.72
46500 Injection of hemorrhoid	18	14	$626.00	$194.60
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	17	17	$486.00	$166.01
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	17	17	$320.00	$109.68

Medical Specialties & State Licenses

CMS Verified: 2026-05-14

Colon & Rectal Surgery Primary Specialty

NUCC Taxonomy Code: 208C00000X

State License OR MD28214

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Surgery

NUCC Taxonomy Code: 208600000X

State License OR MD28214

A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID

272697 (OR)

Medicaid State Provider ID

8508939 (WA)

Hospital & Practice Group Affiliations

The Oregon Clinic, Pc

1111 Ne 99th Ave, Portland, OR 972209442

The Oregon Clinic, Pc

11000 Sw Stratus St, Beaverton, OR 970087104

The Oregon Clinic, Pc

9155 Sw Barnes Rd, Portland, OR 972256634

Phone: 5032971351

The Oregon Clinic, Pc

4805 Ne Glisan, Portland, OR 972132933

The Oregon Clinic, Pc

5050 Ne Hoyt, Portland, OR 972132990

Phone: 5032396673

Secondary Practice Locations

11000 Sw Stratus St Ste 205

Beaverton, OR 970087104

Phone: 5032810561

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

21 Associated Practitioners

Dr. Christy Dunst , MD

Surgery

NPI 1073684890

Doctor of Medicine (M.D.)

Dr. Shaghayegh Aliabadi , MD

Surgery

NPI 1083785562

Doctor of Medicine (M.D.)

Dr. Paul Hansen , MD

Surgery

NPI 1104818632

Doctor of Medicine (M.D.)

Dr. John Zelko , MD

Surgery

NPI 1124098033

Doctor of Medicine (M.D.)

Shannon Stoll , PA-C

Physician Assistant - Surgical

NPI 1144896879

Physician Assistant (Certified)

Dr. Roy Breen , MD

Colon & Rectal Surgery

NPI 1164594248

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

7 Historical Events

📍

Updated Business Mailing Address December 07, 2023

Registered at 541 NE 20TH AVE STE 225, PORTLAND, OR 972322895 (Tel: 5039632801)

✅

NPI Profile Active September 19, 2013

NPI status registered as active in NPPES database

📍

Updated Practice Location September 19, 2013

Registered at 4805 NE GLISAN ST, SUITE 6N60, PORTLAND, OR 972132933 (Tel: 5032810561)

📍

Updated Business Mailing Address September 19, 2013

Registered at 847 NE 19TH AVE, SUITE 300, PORTLAND, OR 972322684 (Tel: 5039632801)

👤

Provider Name / Credentials Updated September 19, 2013

Recorded as DAVID O'BRIEN, MD

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) September 19, 2013

Surgery (License #MD28214 in OR)

🟢

Initial NPI Registration & Enumeration March 09, 2006

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1669440350

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: March 09, 2006

Last Update: May 14, 2026

Sole Proprietor: No

Update or Correct Profile

Mailing Address

541 Ne 20th Ave Ste 225

Portland, OR 972322895

Phone: 5039632801

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.