DR. JAMES BYRON DARNTON M.D.
NPI 1396087227
Internal Medicine in Seattle, WA

Q: What is James Darnton's NPI number?

The NPI number for James Darnton is 1396087227. It was assigned to this individual provider in the NPPES registry on March 18, 2013.

Q: What is James Darnton's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for James Darnton was last updated on July 19, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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 18, 2013PECOS EnrolledAccepts Medicare Assignment

93.09/100

CMS Quality Rating

325 9TH AVE, BOX 359892, SEATTLE, WA 98104(206) 744-9700(206) 744-8516 Get Directions Write a Review

NPPES record last updated: July 19, 2013. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. James Byron Darnton M.d. NPPES

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

DR. JAMES BYRON DARNTON M.D. (NPI 1396087227) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (ML 60358691) and active in the NPI registry since March 2013. He is enrolled in Medicare PECOS, is affiliated with Harborview Medical Center, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2013).

NPPES Registry Identity

NPI1396087227

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JAMES BYRON DARNTONCredential: M.D.

Location Address325 9TH AVE, BOX 359892Seattle, WA 98104-2420

Mailing Address325 9th Ave, Box 359892Seattle, WA 98104-2420 · (206) 744-9700 · Fax (206) 744-8516

Phone(206) 744-9700

Fax(206) 744-8516

Sole ProprietorNo

Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 2013

Enumeration DateMarch 18, 2013

Last NPPES UpdateJuly 19, 2013

✔ NPI 1396087227 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in WA · ML 60358691

Definition

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.

325 9TH AVE, Seattle, WA 98104

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska, Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. James Byron Darnton 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 ID2860717618

PECOS Enrollment IDI20160407001337

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.

Areas of Expertise CMS Part B claims 2

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 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.

42 services24 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.

26 services25 patients

Hospital Affiliations CMS Care Compare

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

Harborview Medical Center

Acute Care Hospitals · Seattle, WA

1/5 CMS rating

OwnershipGovernment - Local

CMS Certification Number500064

Location325 9th AvenueSeattle, WA 98104 · King County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 98104 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

$143.76 typical visit price

range $63.67 – $189.37

Typical copayment $35.94 (range $15.91 – $47.34)

Most-billed visit code 99204

Established Patient

$111.00 typical visit price

range $21.12 – $155.00

Typical copayment $27.75 (range $5.28 – $38.75)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

93.09/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

73.95

Promoting Interoperability

100

Improvement Activities

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

6 suppliers21 claims58 services$5.24 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

SANDRA K WALKER ARNP

Nurse Practitioner (Acute Care)

325 9TH AVE
SEATTLE, WA 98104

King County (206) 598-0502

JULIA J VISSER DPT

Physical Therapist

325 9TH AVE, BOX 359920
SEATTLE, WA 98104

King County (206) 744-1675

GENIA J MONCADA

Pharmacist

325 9TH AVE, MAILSTOP 359912
SEATTLE, WA 98104

King County (206) 731-3219

JACQUELINE M. KIM LICSW, MSW

Social Worker (Clinical)

325 9TH AVE, BOX 359760
SEATTLE, WA 98104

King County (206) 744-8511

MS. DIANE E WHEELER MS, PA-C

Physician Assistant (Medical)

325 9TH AVE
SEATTLE, WA 98104

King County (206) 744-3000

AMELIA V. RIVERA

Physical Therapist

325 9TH AVE
SEATTLE, WA 98104

King County (206) 774-3300

TIMOTHY WILLIAM MENZA MD, PHD

Internal Medicine (Infectious Disease)

325 9TH AVE
SEATTLE, WA 98104

King County (206) 520-5000

DEMETRIOS TEREZAKIS

Occupational Therapist

325 9TH AVE
SEATTLE, WA 98104

King County (206) 744-6112

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 James Darnton's NPI number?

The NPI number for James Darnton is 1396087227. It was assigned to this individual provider in the NPPES registry on March 18, 2013.

Where is James Darnton located?

James Darnton practices at 325 9th Ave Box 359892, Seattle, WA 98104. The listed phone number is (206) 744-9700.

What is James Darnton's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is James Darnton enrolled in Medicare?

Yes. James Darnton 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.

What insurance does James Darnton accept?

Health plans from PacificSource Health Plans, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list James Darnton 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 James Darnton affiliated with any hospitals?

According to CMS data, James Darnton is affiliated with Harborview Medical Center.

When was this NPI record last updated?

The NPPES record for James Darnton was last updated on July 19, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.