Chad Duffalo, M.D.
Infectious Disease Physician · Newark, DE
Chad Duffalo, M.D. is an infectious disease physician with a practice address in Newark, Delaware, and NPI 1639339484, issued on Jun 16, 2008. Check the license on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Chad Duffalo
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License number
- 247974 MA
Self-reported in NPPES; status is on the state search - Practice location
- 537 Stanton Christiana RD, Newark, DE 19713
- Phone
- (302) 994-9692
- Enumerated
- Jun 16, 2008
- Record last updated
- Feb 4, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (302) 994-9803
- Medicare enrollment
- Enrolled (PECOS I20131230000021); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 32 in Delaware → Look up another NPI →
Also registered at 537 Stanton Christiana RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- VI Banh, PA-CPhysician Assistant1154897882
- Daniella Benson, PA,C.Physician Assistant1396964128
- Michele Compton, PA-CMedical Physician Assistant1629103536
Verify Chad Duffalo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and DisciplineCheck 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% fewer Medicare Part D claims than the average infectious disease physician in 2024
670 Medicare Part D claims for 117 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Azithromycin47 claims
- Vancomycin Hcl46 claims
- Amoxicillin-Clavulanate Potass40 claims
- Odefsey35 claims
- Genvoya34 claims
- Sulfamethoxazole-Trimethoprim34 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $419.12
17 payments; by number, the most common kind was food and beverage; the largest payer was ViiV Healthcare Company. The 3,895 providers of this specialty with any payment received $4,362.19 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 one group practice
- Infectious Disease Consultants PAElkton, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chad Duffalo among 32 infectious disease physician records in Delaware
Chad Duffalo, M.D. is one of 32 infectious disease physician records with a practice address in Delaware. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 56% of them.
- NPI issued2008 · 56% of these records are older, 38% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 88% of these records are
- Graduated2006 · median 2002 among the 28 with a school on file
- Record last updated2014 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RI0200X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Infectious Disease Physician providers in Delaware
There are 32 infectious disease physician records in Delaware.
All 32 in Delaware → Every provider in Newark → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Alfred Bacon, MDNewark, DE 197131902967508
- David Cohen, M.D.Newark, DE 197131306907902
- Wesley Emmons, M.D.Newark, DE 197131770692782
- Maya Gupta, M.D.Newark, DE 197131811011646
- Stephanie Lee, MDNewark, DE 197131912068529
- James Ley, M.D.Newark, DE 197131376652396
- Tresa Mascarenhas, MBBSNewark, DE 197131477846079
- Angela Oates, M.D,Newark, DE 197131447437868
Common questions
What is Chad Duffalo, M.D.'s NPI number?
Chad Duffalo, M.D.'s National Provider Identifier (NPI) is 1639339484, issued on Jun 16, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Chad Duffalo, M.D. located?
The NPPES record lists a practice address at 537 Stanton Christiana RD, Newark, DE, 19713. Phone: (302) 994-9692. Providers update this record themselves, so call before visiting.
How can I verify Chad Duffalo, M.D.'s license?
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 Chad Duffalo, M.D. prescribe under Medicare Part D?
In 2024, Chad Duffalo, M.D. had 670 Medicare Part D claims for 117 beneficiaries; the average among infectious disease physician prescribers was 689. Part D covers Medicare prescriptions only.
What is Chad Duffalo, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.