Dean L. Mittman, MD
Dermatology Physician · Rehoboth Beach, DE
Dean L. Mittman, MD is a dermatology physician with a practice address in Rehoboth Beach, Delaware, and NPI 1043359292, issued on Feb 5, 2007. Check the license (Delaware C1-0028187, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Dean L. Mittman
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- C1-0028187 DE
111705 MO
Self-reported in NPPES; status is on the state search - Practice location
- 18947 John J Williams Hwy Unit 201, Rehoboth Beach, DE 19971
- Phone
- (302) 645-4801
- Enumerated
- Feb 5, 2007
- Record last updated
- Jun 10, 2025
- Fax
- (888) 987-4173
- Medicaid IDs
- 208573014 MO
142569001 AR - Medicare enrollment
- Enrolled (PECOS I20250801004089); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 1986
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 27 in Delaware → Look up another NPI →
Also registered at 18947 John J Williams Hwy Unit 201
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patrick Duffy, PAPhysician Assistant1780748368
- Cassidy Hill, PAPhysician Assistant1144981077
- Ogechukwu Ndum, M.D.Allergy Physician1205198512
Verify Dean L. Mittman 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 C1-0028187Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average dermatology physician in 2024
2,380 Medicare Part D claims for 910 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims.
Most prescribed
- Mupirocin596 claims
- Ammonium Lactate363 claims
- Ketoconazole196 claims
- Triamcinolone Acetonide182 claims
- Mometasone Furoate156 claims
- Hydrocortisone125 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
- Beebe Physician Network Inc.Rehoboth Beach, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dean L. Mittman among 27 dermatology physician records in Delaware
Dean L. Mittman, MD is one of 27 dermatology physician records with a practice address in Delaware. 70% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 41% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1986 · median 2005 among the 18 with a school on file
- Record last updated2025 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in Delaware
There are 27 dermatology physician records in Delaware.
All 27 in Delaware → Every provider in Rehoboth Beach → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Curtis Asbury, M.D.Selbyville, DE 199751124259254
- Allison Hager, FNP-BCMillsboro, DE 199661346738853
- A.. Masten, M.D.Milford, DE 199631083704472
- Elizabeth Masten, M.D.Milford, DE 199631225128614
- Jason Staback, PA-CLewes, DE 199581750331948
- Joseph Andrews, M.D.Dover, DE 199041548321714
- Chloe Payne, M.D.Wilmington, DE 198101083054928
- Marguerite Thew, MDWilmington, DE 198101144255647
Common questions
What is Dean L. Mittman, MD's NPI number?
Dean L. Mittman, MD's National Provider Identifier (NPI) is 1043359292, issued on Feb 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Dean L. Mittman, MD located?
The NPPES record lists a practice address at 18947 John J Williams Hwy Unit 201, Rehoboth Beach, DE, 19971. Phone: (302) 645-4801. Providers update this record themselves, so call before visiting.
How can I verify Dean L. Mittman, MD's license?
NPPES lists Delaware license number C1-0028187, 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 Dean L. Mittman, MD prescribe under Medicare Part D?
In 2024, Dean L. Mittman, MD had 2,380 Medicare Part D claims for 910 beneficiaries; the average among dermatology physician prescribers was 797. 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.