Melissa Diane Loo, PA
Physician Assistant · Litchfield Park, AZ
Melissa Diane Loo, PA is a physician assistant with a practice address in Litchfield Park, Arizona, and NPI 1477019784, issued on Feb 12, 2019. Check the license (Arizona 8405, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Melissa Diane Loo
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 8405 AZ
9105 GA
3258 SC
Self-reported in NPPES; status is on the state search - Practice location
- 14044 W Camelback RD Ste 204, Litchfield Park, AZ 85340
- Phone
- (623) 935-9600
- Enumerated
- Feb 12, 2019
- Record last updated
- Aug 5, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (623) 935-9602
- Medicare enrollment
- Enrolled (PECOS I20260310003047); may accept Medicare assignment
- Medical or professional school
- Lincoln Mem Univ, Debusk Col Of Osteopathic Med, 2018
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,666 in Arizona → Look up another NPI →
Also registered at 14044 W Camelback RD Ste 204
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Brown, DOFamily Medicine Physician1386800076
- Cecilia CarlsonPhysician Assistant1285451641
- Kevin Houlihan, M.D.Family Medicine Physician1609862697
- Natalie JacksonFamily Nurse Practitioner1740906072
- Crystal Qureshi, PA-CPhysician Assistant1942245691
Verify Melissa Diane Loo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Arizona board licenses this profession
Search for license 8405Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average physician assistant in 2024
128 Medicare Part D claims for 99 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Nitrofurantoin Mono-Macro17 claims
- Fluticasone Propionate12 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.
Melissa Diane Loo among 3,666 physician assistant records in Arizona
Melissa Diane Loo, PA is one of 3,666 physician assistant records with a practice address in Arizona. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 53% of them.
- NPI issued2019 · 53% of these records are older, 41% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2018 · median 2018 among the 2,207 with a school on file
- Record last updated2021 · 35% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 physician assistant records list a practice address in Litchfield Park
They are 23 of the 550 NPPES records with a practice address in Litchfield Park, and 3,666 physician assistant records in Arizona.
All 3,666 in Arizona → Every provider in Litchfield Park → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Kimberly Basile, PA-CLitchfield Park, AZ 853401922359892
- Kathryn Earhart, PA-CLitchfield Park, AZ 853401326500471
- Jamie Engstrom, PA-CLitchfield Park, AZ 853401053538389
- Kerry Knight, PACLitchfield Park, AZ 853401194730762
- Kristen Lazarini, MPAS, PA-CLitchfield Park, AZ 853401265704613
- Tiffany Ly, PA-CLitchfield Park, AZ 853401891204772
- Rebekah Nordtvedt, PA-CLitchfield Park, AZ 853401992271621
- Lin Ozan, PA-CLitchfield Park, AZ 853401902381379
Common questions
What is Melissa Diane Loo, PA's NPI number?
Melissa Diane Loo, PA's National Provider Identifier (NPI) is 1477019784, issued on Feb 12, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Melissa Diane Loo, PA located?
The NPPES record lists a practice address at 14044 W Camelback RD Ste 204, Litchfield Park, AZ, 85340. Phone: (623) 935-9600. Providers update this record themselves, so call before visiting.
How can I verify Melissa Diane Loo, PA's license?
NPPES lists Arizona license number 8405, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.
How much does Melissa Diane Loo, PA prescribe under Medicare Part D?
In 2024, Melissa Diane Loo, PA had 128 Medicare Part D claims for 99 beneficiaries; the average among physician assistant prescribers was 830. 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.