Katherine Marie Duncan, P.A.-C
Medical Physician Assistant · Scottsdale, AZ
Katherine Marie Duncan, P.A.-C is a medical physician assistant with a practice address in Scottsdale, Arizona, and NPI 1083978753, issued on Jun 27, 2012. Check the license (Arizona 6114, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Marie Duncan
- Credential
- P.A.-C
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 6114 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 20201 N Scottsdale Healthcare Dr, Scottsdale, AZ 85255
- Phone
- (480) 398-1550
- Enumerated
- Jun 27, 2012
- Record last updated
- Jun 5, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (480) 398-1551
- Medicare enrollment
- Enrolled (PECOS I20151008001095); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 996 in Arizona → Look up another NPI →
Also registered at 20201 N Scottsdale Healthcare Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samuel Bailey, M.D.Plastic Surgery within the Head & Neck (Otolaryngology) Physician1396912911
- Mark Barakat, M.D.Ophthalmology Physician1225214646
- Jennifer Burke, MDFamily Medicine Physician1902833601
- Lynn Demasters, PAPhysician Assistant1073569083
- Haley Frazier, PA-CPhysician Assistant1366910036
- David Hecht, MDPlastic Surgery within the Head & Neck (Otolaryngology) Physician1659367910
Verify Katherine Marie Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 6114Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
75% fewer Medicare Part D claims than the average medical physician assistant in 2024
282 Medicare Part D claims for 133 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D. Brand-name drugs were 9% of claims.
Most prescribed
- Triamcinolone Acetonide42 claims
- Ketoconazole35 claims
- Hydrocortisone33 claims
- Clobetasol Propionate28 claims
- Valacyclovir19 claims
- Dupixent Syringe13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,123.24
43 payments; by number, the most common kind was food and beverage; the largest payer was Dermavant Sciences, Inc. The 16,165 providers of this specialty with any payment received $1,055.00 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Brenda Latowsky M.D. P.L.C.Scottsdale, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Marie Duncan among 996 medical physician assistant records in Arizona
Katherine Marie Duncan, P.A.-C is one of 996 medical physician assistant records with a practice address in Arizona. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 52% of them.
- NPI issued2012 · 52% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2012 · median 2012 among the 541 with a school on file
- Record last updated2018 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Arizona
There are 996 medical physician assistant records in Arizona.
All 996 in Arizona → Every provider in Scottsdale → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Efrain Alejandro TorresScottsdale, AZ 852551316726185
- Eliu Alejandro TorresScottsdale, AZ 852551225817091
- Erica Casselman, PACScottsdale, AZ 852551295107860
- Ann Marie Chavez, PA-CScottsdale, AZ 852551992945299
- Alfred Koos, PA-CScottsdale, AZ 852551801265632
- Melissa LopezScottsdale, AZ 852551730968801
- Elizabeth Marino, PA-CScottsdale, AZ 852551457933673
- Marc MonetteScottsdale, AZ 852551922679166
Common questions
What is Katherine Marie Duncan, P.A.-C's NPI number?
Katherine Marie Duncan, P.A.-C's National Provider Identifier (NPI) is 1083978753, issued on Jun 27, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Marie Duncan, P.A.-C located?
The NPPES record lists a practice address at 20201 N Scottsdale Healthcare Dr, Scottsdale, AZ, 85255. Phone: (480) 398-1550. Providers update this record themselves, so call before visiting.
How can I verify Katherine Marie Duncan, P.A.-C's license?
NPPES lists Arizona license number 6114, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Marie Duncan, P.A.-C prescribe under Medicare Part D?
In 2024, Katherine Marie Duncan, P.A.-C had 282 Medicare Part D claims for 133 beneficiaries; the average among medical physician assistant prescribers was 1,148. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.