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DIANA KATHRYN BOSS M.D.
NPI 1023239407
Internal Medicine in Portland, OR

Active since May 01, 2007PECOS EnrolledAccepts Medicare Assignment
9205 SW BARNES RD, SUITE MT 2800, PORTLAND, OR 97225(503) 216-2621 Get Directions Write a Review

NPPES record last updated: July 8, 2007. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Diana Kathryn Boss M.d. NPPES

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

DIANA KATHRYN BOSS M.D. (NPI 1023239407) is an individual internal medicine provider in Portland, Oregon, licensed in Oregon (MD27265) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS, is affiliated with Legacy Emanuel Medical Center, and is a graduate of Medical College Of Georgia School Of Medicine (2004).

NPPES Registry Identity

NPI1023239407
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDIANA KATHRYN BOSSCredential: M.D.
Location Address9205 SW BARNES RD, SUITE MT 2800Portland, OR 97225-6603
Mailing Address9205 Sw Barnes Rd, Suite Mt 2800Portland, OR 97225-6603 · (503) 216-2621
Phone(503) 216-2621
Sole ProprietorYes
Medical School CMSMedical College Of Georgia School Of MedicineGraduated 2004
Enumeration DateMay 1, 2007
Last NPPES UpdateJuly 8, 2007
✔ NPI 1023239407 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in OR · MD27265
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.
9205 SW BARNES RD, Portland, OR 97225
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Diana Kathryn Boss 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 ID5597866269
PECOS Enrollment IDI20070725000094
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.

Medicare Billing Reassignments

6

Medicare enrollment records show Diana Boss reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Legacy Good Samaritan Hospital And Medical Center
3.8 mi
General Acute Care Hospital
1015 NW 22ND AVE
Portland, OR 97210
  • Reassigned Medicare billing, Oregon enrollment
  • 387 clinicians in this Medicare group
NPI 1780608216 (503) 413-7711
Legacy Clinics LLC
3.9 mi
Clinic/Center
1130 NW 22ND AVE STE 220
Portland, OR 97210
  • Reassigned Medicare billing, Oregon enrollment
  • 1,248 clinicians in this Medicare group
NPI 1902827272 (503) 413-2901
Legacy Emanuel Hospital & Health Center
5.4 mi
General Acute Care Hospital
1225 NE 2ND AVE
Portland, OR 97232
  • Reassigned Medicare billing, Oregon enrollment
  • 719 clinicians in this Medicare group
NPI 1003367491 (503) 944-8000
Legacy Meridian Park Hospital
9.2 mi
Hospitalist
19300 SW 65TH AVE
Tualatin, OR 97062
  • Reassigned Medicare billing, Oregon enrollment
  • 218 clinicians in this Medicare group
NPI 1023305034 (503) 692-1212
Legacy Mount Hood Medical Center
18 mi
General Acute Care Hospital
24800 SE STARK ST
Gresham, OR 97030
  • Reassigned Medicare billing, Oregon enrollment
  • 132 clinicians in this Medicare group
NPI 1255354700 (503) 674-1122
Silverton Health
25 mi
Clinic/Center
1475 MT. HOOD AVE
Woodburn, OR 97071
  • Reassigned Medicare billing, Oregon enrollment
  • 568 clinicians in this Medicare group
NPI 1215347109 (971) 983-5214

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.
33 services33 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
17 services17 patients

Hospital Affiliations CMS Care Compare 4

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

Legacy Emanuel Medical Center

Acute Care Hospitals · Portland, OR
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380007
Location2801 N Gantenbein AvenuePortland, OR 97227 · Multnomah County
Emergency services Birthing friendly

Legacy Good Samaritan Medical Center

Acute Care Hospitals · Portland, OR
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380017
Location1015 NW 22nd Avenue, W121Portland, OR 97210 · Multnomah County
Emergency services Birthing friendly

Legacy Silverton Medical Center

Acute Care Hospitals · Silverton, OR
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380029
Location342 Fairview StreetSilverton, OR 97381 · Marion County
Emergency services Birthing friendly

Legacy Meridian Park Medical Center

Acute Care Hospitals · Tualatin, OR
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number380089
Location19300 SW 65th AvenueTualatin, OR 97062 · Washington County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 97225 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
$134.16 typical visit price
range $58.99 – $176.88
Typical copayment $33.54 (range $14.74 – $44.22)
Most-billed visit code 99204
Established Patient
$103.51 typical visit price
range $19.32 – $144.79
Typical copayment $25.87 (range $4.83 – $36.19)
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.

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.

Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
3 suppliers36 claims36 services$175.31 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.

DR. VICTOR NGUYEN PHAM M.D.
Hospitalist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-2906
YEVGENY BULOCHNIK PHARMD
Pharmacist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-3299
MR. DANIEL PAUL ADDY C.R.N.A.
Nurse Anesthetist, Certified Registered
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-1234
MR. JONATHAN DAVID CAULLEY PT
Physical Therapist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-2610
EMILY ECHTENKAMP LCSW, CADC III, MAC
Counselor (Mental Health)
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-1234
BRIAN J KEARNS MD
Hospitalist
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-2906
DR. JAMES S PUTNAM MD
Radiology (Vascular & Interventional Radiology)
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (503) 216-4830
MATTHEW CARSTENS FRANK M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
9205 SW BARNES RD
PORTLAND, OR 97225
Washington County (303) 859-4275

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 Diana Boss's NPI number?

The NPI number for Diana Boss is 1023239407. It was assigned to this individual provider in the NPPES registry on May 1, 2007.

Where is Diana Boss located?

Diana Boss practices at 9205 SW Barnes Rd Suite Mt 2800, Portland, OR 97225. The listed phone number is (503) 216-2621.

What is Diana Boss's specialty?

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

Is Diana Boss enrolled in Medicare?

Yes. Diana Boss 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.

Which organizations bill Medicare for Diana Boss's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Boss reassigns Medicare benefits to 6 organizations: Legacy Good Samaritan Hospital And Medical Center (Portland, OR), Legacy Clinics LLC (Portland, OR), Legacy Emanuel Hospital & Health Center (Portland, OR), Legacy Meridian Park Hospital (Tualatin, OR), Legacy Mount Hood Medical Center (Gresham, OR) and 1 more organization, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Boss's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Diana Boss affiliated with any hospitals?

According to CMS data, Diana Boss is affiliated with Legacy Emanuel Medical Center, Legacy Good Samaritan Medical Center, Legacy Silverton Medical Center and Legacy Meridian Park Medical Center.

When was this NPI record last updated?

The NPPES record for Diana Boss was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.