Ronnie N. Diem, PAC
Physician Assistant · Dover, DE
Ronnie N. Diem, PAC is a physician assistant with a practice address in Dover, Delaware, and NPI 1932164324, issued on Apr 19, 2006. Check the license (Delaware C50000437, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ronnie N. Diem
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- C50000437 DE
Self-reported in NPPES; status is on the state search - Practice location
- 4601 S Dupont Hwy, Dover, DE 19901
- Phone
- (302) 331-9026
- Enumerated
- Apr 19, 2006
- Record last updated
- Jun 25, 2025
- Fax
- (302) 698-1187
- Medicaid ID
- 1000036127 DE
- Medicare enrollment
- Enrolled (PECOS I20041025000551); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 695 in Delaware → Look up another NPI →
Also registered at 4601 S Dupont Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kimberly Hollowell, MSN, RN, FNP-CFamily Nurse Practitioner1053081778
- Philip Hsu, NPFamily Nurse Practitioner1396283180
- Brooke ZingoneNurse Practitioner1356991368
Verify Ronnie N. Diem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license C50000437Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average physician assistant in 2024
1,800 Medicare Part D claims for 531 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 22 claims were for opioids.
Most prescribed
- Prednisone161 claims
- Fluticasone Propionate121 claims
- Azithromycin87 claims
- Cefdinir87 claims
- Amoxicillin59 claims
- Albuterol Sulfate Hfa56 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: $631.10
33 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 64,719 providers of this specialty with any payment received $841.65 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 2 group practices
- Coastal Primary CareHarrington, DE
- Coastal Walk INHarrington, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronnie N. Diem among 695 physician assistant records in Delaware
Ronnie N. Diem, PAC is one of 695 physician assistant records with a practice address in Delaware. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 85% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2003 · median 2019 among the 462 with a school on file
- Record last updated2025 · 34% 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 Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
86 physician assistant records list a practice address in Dover
They are 86 of the 2,137 NPPES records with a practice address in Dover, and 695 physician assistant records in Delaware.
All 695 in Delaware → Every provider in Dover → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Anastazia Acevedo, PA-CDover, DE 199011831495282
- Lauren Baker, PA-CDover, DE 199011770850562
- Todd Brandt, PA-CDover, DE 199011033342969
- Steven Cain, P.A.-CDover, DE 199011649296591
- Teresa CasellaDover, DE 199011205107463
- Heather Castiglioni, PACDover, DE 199011366453607
- Jeffrey Cirks, PA-CDover, DE 199011598757700
- Stacey Cronauer, PA-CDover, DE 199011659362689
Common questions
What is Ronnie N. Diem, PAC's NPI number?
Ronnie N. Diem, PAC's National Provider Identifier (NPI) is 1932164324, issued on Apr 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronnie N. Diem, PAC located?
The NPPES record lists a practice address at 4601 S Dupont Hwy, Dover, DE, 19901. Phone: (302) 331-9026. Providers update this record themselves, so call before visiting.
How can I verify Ronnie N. Diem, PAC's license?
NPPES lists Delaware license number C50000437, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does Ronnie N. Diem, PAC prescribe under Medicare Part D?
In 2024, Ronnie N. Diem, PAC had 1,800 Medicare Part D claims for 531 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.