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KATHERINE DAWN DUNCAN M.D.
NPI 1366762650
Internal Medicine - Obesity Medicine in Phoenix, AZ

Active since June 09, 2010PECOS Enrolled
3811 E BELL RD STE 300, PHOENIX, AZ 85032(480) 454-7350(602) 569-1035 Get Directions Write a Review

NPPES record last updated: June 4, 2018. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Katherine Dawn Duncan M.d. NPPES

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

KATHERINE DAWN DUNCAN M.D. (NPI 1366762650) is an individual obesity medicine provider in Phoenix, Arizona, licensed in Arizona (47650) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1366762650
Entity TypeIndividualFemale
Primary Taxonomy207RB0002X
Provider Legal NameKATHERINE DAWN DUNCANCredential: M.D.
Location Address3811 E BELL RD STE 300Phoenix, AZ 85032
Mailing Address3811 E Bell Rd Ste 300Phoenix, AZ 85032-2160 · (480) 454-7350 · Fax (602) 569-1035
Phone(480) 454-7350
Fax(602) 569-1035
Sole ProprietorYes
Enumeration DateJune 9, 2010
Last NPPES UpdateJune 4, 2018
✔ NPI 1366762650 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Obesity MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RB0002X
License✔ Licensed in AZ · 47650
Definition
An internal medicine physician who specializes in the treatment of obesity demonstrates competency in and a thorough understanding of the treatment of obesity and the genetic, biologic, environmental, social, and behavioral factors that contribute to obesity. The obesity medicine physician employs therapeutic interventions including diet, physical activity, behavioral change, and pharmacotherapy. The obesity medicine physician utilizes a comprehensive approach, and may include additional resources such as dietitians, exercise physiologists, mental health professionals and bariatric surgeons as indicated to achieve optimal results. Additionally, the obesity medicine physician maintains competency in providing pre- peri- and post-surgical care of bariatric surgery patients, promotes the prevention of obesity, and advocates for those who suffer from obesity.
Also ListedInternal MedicineTaxonomy 207R00000X · License 47650 (AZ)
3811 E BELL RD STE 300, Phoenix, AZ 85032
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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 (PECOS)

Katherine Dawn Duncan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Reassignment

Medicare enrollment records show Katherine Duncan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Internal Medicine Of Arizona PC
9.0 mi
Internal Medicine
3333 E CAMELBACK RD, SUITE 122
Phoenix, AZ 85018
  • Reassigned Medicare billing, Arizona enrollment
  • 8 clinicians in this Medicare group
NPI 1104039114 (602) 522-1900

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

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.
88 services33 patients

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DANIEL T. FANG M.D.
Surgery
3811 E BELL RD STE 300
PHOENIX, AZ 85032
Maricopa County (480) 454-7350
AMY KATHRYN WIFLER PA
Physician Assistant
3811 E BELL RD STE 300
PHOENIX, AZ 85032
Maricopa County (480) 454-7350
ALEJANDRA NAVARRO CASTANEDA MD
Surgery
3811 E BELL RD STE 300
PHOENIX, AZ 85032
Maricopa County (480) 454-7350
AMBER ROSE SENATOR NP
Nurse Practitioner
3811 E BELL RD STE 300
PHOENIX, AZ 85032
Maricopa County (602) 249-8578
MICHELLE MIX MD
Internal Medicine (Cardiovascular Disease)
3811 E BELL RD STE 300
PHOENIX, AZ 85032
Maricopa County (602) 952-0002

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 Katherine Duncan's NPI number?

The NPI number for Katherine Duncan is 1366762650. It was assigned to this individual provider in the NPPES registry on June 9, 2010.

Where is Katherine Duncan located?

Katherine Duncan practices at 3811 E Bell Rd Ste 300, Phoenix, AZ 85032. The listed phone number is (480) 454-7350.

What is Katherine Duncan's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Obesity Medicine, with taxonomy code 207RB0002X.

Is Katherine Duncan enrolled in Medicare?

Yes. Katherine Duncan is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Katherine Duncan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Katherine Duncan reassigns Medicare benefits to Internal Medicine Of Arizona PC (Phoenix, AZ). The 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 Katherine Duncan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Katherine Duncan was last updated on June 4, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.