Brian Caswell-Monack, D.O.
Family Medicine Physician · Lewes, DE
Brian Caswell-Monack, D.O. is a family medicine physician with a practice address in Lewes, Delaware, and NPI 1164733291, issued on Jun 23, 2010. Check the license (Delaware C2-0010433, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Brian Caswell-Monack
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- C2-0010433 DE
Self-reported in NPPES; status is on the state search - Practice location
- 20251 John J Williams Hwy, Lewes, DE 19958
- Phone
- (302) 644-6860
- Enumerated
- Jun 23, 2010
- Record last updated
- Jan 26, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (302) 644-6872
- Medicare enrollment
- Enrolled (PECOS I20131206000439); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2010
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 518 in Delaware → Look up another NPI →
Also registered at 20251 John J Williams Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heather BollingerTechnician1184096638
- Shannon BonaventureLicensed Practical Nurse1811369457
- Catherine Deluca, MDFamily Medicine Physician1548265580
- Carmelo Disalvo, M.D.Family Medicine Physician1902078074
- Linda Golding, PA-CPhysician Assistant1659569820
- Kelly Goodenough, PA-CPhysician Assistant1376889238
Verify Brian Caswell-Monack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C2-0010433Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family medicine physician in 2024
8,005 Medicare Part D claims for 587 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 88 claims were for opioids.
Most prescribed
- Atorvastatin Calcium504 claims
- Lisinopril336 claims
- Amlodipine Besylate299 claims
- Levothyroxine Sodium299 claims
- Rosuvastatin Calcium286 claims
- Losartan Potassium255 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.
Bills Medicare through one group practice
- Mid-Atlantic Family PracticeLewes, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Caswell-Monack among 518 family medicine physician records in Delaware
Brian Caswell-Monack, D.O. is one of 518 family medicine physician records with a practice address in Delaware. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 65% of them.
- NPI issued2010 · 65% of these records are older, 33% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2010 · median 2002 among the 323 with a school on file
- Record last updated2017 · 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 207Q00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 family medicine physician records list a practice address in Lewes
They are 26 of the 1,696 NPPES records with a practice address in Lewes, and 518 family medicine physician records in Delaware.
All 518 in Delaware → Every provider in Lewes → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Christine Degnon, MDLewes, DE 199581033129499
- Catherine Deluca, MDLewes, DE 199581548265580
- Carmelo Disalvo, M.D.Lewes, DE 199581902078074
- Jerome Groll, MDLewes, DE 199581891788519
- John Hale, MDLewes, DE 199581417954009
- Jeffrey Heckert, MDLewes, DE 199581386649390
- Erin Lavin, D.O.Lewes, DE 199581912115429
- Tiffani Lemen, M.D.Lewes, DE 199581760651210
Common questions
What is Brian Caswell-Monack, D.O.'s NPI number?
Brian Caswell-Monack, D.O.'s National Provider Identifier (NPI) is 1164733291, issued on Jun 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Brian Caswell-Monack, D.O. located?
The NPPES record lists a practice address at 20251 John J Williams Hwy, Lewes, DE, 19958. Phone: (302) 644-6860. Providers update this record themselves, so call before visiting.
How can I verify Brian Caswell-Monack, D.O.'s license?
NPPES lists Delaware license number C2-0010433, as entered by the provider. Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian Caswell-Monack, D.O. prescribe under Medicare Part D?
In 2024, Brian Caswell-Monack, D.O. had 8,005 Medicare Part D claims for 587 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.