Jeffrey M. Guarino, MD
Geriatric Medicine (Family Medicine) Physician · Wilmington, DE
Jeffrey M. Guarino, MD is a geriatric medicine (family medicine) physician with a practice address in Wilmington, Delaware, and NPI 1588898597, issued on May 5, 2009. Check the license (Delaware C1-0009551, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Jeffrey M. Guarino
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Family Medicine) Physician 207QG0300X
- License number
- C1-0009551 DE
Self-reported in NPPES; status is on the state search - Practice location
- 1401 Foulk Road, Wilmington, DE 19803
- Phone
- (302) 733-1042
- Enumerated
- May 5, 2009
- Record last updated
- May 24, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20130705000236); accepts Medicare assignment
- Medical or professional school
- Jefferson Medical College Of Thomas Jefferson University, 2009
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
4 nearest geriatric medicine (family medicine) physician records → All 5 in Delaware → Look up another NPI →
Also registered at 1401 Foulk Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jeffrey M. Guarino 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 C1-0009551Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average geriatric medicine (family medicine) physician in 2024
3,048 Medicare Part D claims for 273 beneficiaries, against an average of 5,222 among the 1,271 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 87 claims were for opioids.
Most prescribed
- Omeprazole137 claims
- Levothyroxine Sodium106 claims
- Sertraline Hcl105 claims
- Atorvastatin Calcium104 claims
- Gabapentin88 claims
- Metoprolol Succinate77 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 2 group practices
- Christiana Care Health InitiativesWilmington, DE
- Christiana Care Health Services IncWilmington, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Geriatric Medicine (Family Medicine) Physician providers in Delaware
There are 5 geriatric medicine (family medicine) physician records in Delaware.
All 5 in Delaware → Every provider in Wilmington → Geriatric Medicine (Family Medicine) Physician nationwide →
The 4 geriatric medicine (family medicine) physician records with the nearest ZIP codes
- Ina Li, M.D.Wilmington, DE 198031437146180
- Seema Dattani, M.D.Wilmington, DE 198011447427471
- Kulwant KlairNewark, DE 197111225851843
- Marc Kattelman, D.O.Selbyville, DE 199751104821198
Common questions
What is Jeffrey M. Guarino, MD's NPI number?
Jeffrey M. Guarino, MD's National Provider Identifier (NPI) is 1588898597, issued on May 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Jeffrey M. Guarino, MD located?
The NPPES record lists a practice address at 1401 Foulk Road, Wilmington, DE, 19803. Phone: (302) 733-1042. Providers update this record themselves, so call before visiting.
How can I verify Jeffrey M. Guarino, MD's license?
NPPES lists Delaware license number C1-0009551, 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 Jeffrey M. Guarino, MD prescribe under Medicare Part D?
In 2024, Jeffrey M. Guarino, MD had 3,048 Medicare Part D claims for 273 beneficiaries; the average among geriatric medicine (family medicine) physician prescribers was 5,222. 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.