Dr. Robert Tyler Darnell , MD
Emergency Medicine โข Clackamas, OR
10180 Se Sunnyside Rd
Clackamas, OR 970158970
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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Dr. Robert Darnell is listed in NPPES under Emergency Medicine.
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NPI assigned on August 26, 2011; this date does not establish years in practice.
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Published CMS data list 18 Original Medicare Part B services in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Published rows only; this is not a quality measure.
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Published Part B service records, 2022:
- 99284 โ Emergency department visit with moderate level of medical decision making: 18 service units.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022. Units differ by code; these are not visits or a measure of quality.
CPTยฎ only copyright 2021 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2022). CPT notice
See the full table ยท Guide: How to read Medicare Part B data
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Published CMS data list 15 Medicare Part D prescriptions, including refills, in 2022.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2022. Published rows only; this is not a quality measure.
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Published Part D records, 2022:
- Cephalexin โ 15 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers โ by Provider and Drug, 2022. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See the full table ยท Guide: How to read Medicare Part D prescriber data
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Medicare Part B services went from 18 in 2018 to 18 in 2022.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2018โ2022.
Practice Location & Contact Primary Location
10180 Se Sunnyside Rd
Clackamas, OR 970158970
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Hillsboro, OR. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Emergency Medicine: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
28 people with Original Medicare in 2022
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider, 2022.
Medicare-allowed amount
About $2,178 in 2022
The total amount Medicare approved for these services in 2022. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022.
Paid by Medicare
About $1,726 in 2022
The part of the Medicare-allowed amount that Medicare itself paid in 2022, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners โ by Provider and Service, 2022.
30-day fills
15 standardized 30-day fills in 2022
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
$159 in 2022
The total cost of these prescriptions in 2022, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
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 โ by Provider and Drug, 2022.
Open Payments general payments, program year 2025
All general payments: $85.76 across 4 records.
By nature of payment
- Food and Beverage: $85.76 across 4 records.
Reporting-company totals
- MERZ NORTH AMERICA, INC.: $44.43 across 2 records.
- REVANCE THERAPEUTICS, INC.: $41.33 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2011
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.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
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, CMS release of October 2, 2026; Medicare.gov, โDoes your provider accept Medicare as full payment?โ
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians, CMS release of October 2, 2026.
Enrolled in Medicare (PECOS)
Dr. Darnell 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.
Can order Medicare-covered services
CMS lists Dr. Darnell 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.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
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.
Compared with the same specialty in Clackamas and Oregon
Billing and prescribing volume is not a quality rating.
Medicare Part B
Comparisons use 2024 data. The latest CMS data for Dr. Darnell are from 2022.
Medicare Part D
Comparisons use 2024 data. The latest CMS data for Dr. Darnell are from 2022.
97 active clinicians are listed under Emergency Medicine with a practice address in Clackamas, OR (1,091 in Oregon).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Clackamas
0% of these 97 clinicians have the CMS telehealth indicator.
63.9% of these 97 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services went from 18 in 2018 to 18 in 2022.
- 2018: 18
- 2019: 14
- 2020: 12
- 2021: 19
- 2022: 18
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Medicare-allowed amount
Medicare-allowed amount varied from year to year: $2,090 in 2018 and $2,178 in 2022.
- 2018: $2,090
- 2019: $1,650
- 2020: $1,451
- 2021: $2,333
- 2022: $2,178
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Paid by Medicare
Paid by Medicare increased 10% from $1,563 in 2018 to $1,726 in 2022.
- 2018: $1,563
- 2019: $1,315
- 2020: $1,045
- 2021: $1,915
- 2022: $1,726
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Medicare Part D prescriptions
Medicare Part D prescriptions decreased 25% from 20 in 2017 to 15 in 2022.
- 2017: 20
- 2018: 22
- 2020: 42
- 2022: 15
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30-day fills
30-day fills decreased 25% from 20 in 2017 to 15 in 2022.
- 2017: 20
- 2018: 22
- 2020: 42
- 2022: 15
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Part D drug cost
Part D drug cost went from $178 in 2017 to $159 in 2022.
- 2017: $178
- 2018: $232
- 2020: $958
- 2022: $159
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $107.18 in 2022 to $85.76 in 2025.
- 2022: $107.18
- 2023: $174.06
- 2024: $102.40
- 2025: $85.76
Sources: CMS Medicare Physician & Other Practitioners (2022), CMS Medicare Part D Prescribers (2022), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS release of October 2, 2026, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo ยท 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
Program year 2025 (payments made January 1 โ December 31, 2025): fewer than 11 records totaling $85.76.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| REVANCE THERAPEUTICS, INC. |
Food and Beverage
In-kind items and services
|
DAXXIFY | General | $27.29 |
| MERZ NORTH AMERICA, INC. |
Food and Beverage
In-kind items and services
|
Xeomin | General | $24.83 |
| MERZ NORTH AMERICA, INC. |
Food and Beverage
In-kind items and services
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โ | General | $19.60 |
| REVANCE THERAPEUTICS, INC. |
Food and Beverage
In-kind items and services
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DAXXIFY | General | $14.04 |
Source: CMS Open Payments, program year 2025, released June 30, 2026.
Performed Procedures & Service Volume
CPTยฎ is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016โ2021 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners โ by Provider and Service data, 2017โ2022; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99284
Emergency department visit with moderate level of medical decision making
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18 | 18 | $438.00 | $121.02 |
Source: CMS Part B by Provider and Service, 2022; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2022.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Cephalexin | Cephalexin | 15 | 108 | $158.73 | 15 |
Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-06-17NUCC Taxonomy Code: 207P00000X
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - EMERGENCY MEDICINE
I20170914000036
OR
5991925869
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
2875 Ne Stucki Ave
Hillsboro, OR 971245806
Phone: 8008132000
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Emergency Medicine
Doctor of Medicine (M.D.)
Emergency Medicine
Doctor of Medicine (M.D.)
Radiology - Neuroradiology
Doctor of Medicine (M.D.)
Emergency Medicine
Emergency Medicine
Doctor of Medicine (M.D.)
Internal Medicine
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Registered at 10180 SE SUNNYSIDE RD, CLACKAMAS, OR 970158970 (Tel: 5035712880)
Registered at 500 NE MULTNOMAH ST STE 100, PORTLAND, OR 972322031 (Tel: 5038133860)
Additional practice office at 2875 NE Stucki Ave, Hillsboro, OR 971245806
Emergency Medicine (license number reported to NPPES: OR MD181788)
NPI status registered as active in NPPES database
Registered at 1906 BELLEVIEW AVE SE, ROANOKE, VA 240141838 (Tel: 5409817000)
Registered at PO BOX 13367, ROANOKE, VA 240333367 (Tel: 5409817000)
Recorded as ROBERT DARNELL, M.D.
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Emergency Medicine Providers in Clackamas
- Dr. Cole Erickson, MD
- Dr. Robert Dickason, MD
- Dr. Nicholas Leonard, MD
- Dr. Naomi Nardi, DO
- Aimee Parks
- Edward Pak
Mailing Address
500 Ne Multnomah St Ste 100
Portland, OR 972322031
Phone: 5038133860