Joan M. Duggan, M.D.
Infectious Disease Physician · Toledo, OH
Joan M. Duggan, M.D. is an infectious disease physician with a practice address in Toledo, Ohio, and NPI 1891780300, issued on Sep 12, 2005. Check the license (Ohio 35063775, as entered in NPPES) on the State Medical Board of Ohio; the Medicare figures below come from public CMS files.
- Name
- Joan M. Duggan
- Credential
- M.D.
- Primary taxonomy
- Infectious Disease Physician 207RI0200X
- License numbers
- 35063775 OH
35.063775 OH
Self-reported in NPPES; status is on the state search - Practice location
- 3125 Transverse Dr., Toledo, OH 43614
- Phone
- (419) 383-3780
- Enumerated
- Sep 12, 2005
- Record last updated
- Feb 5, 2026
- Fax
- (419) 383-2852
- Medicaid ID
- 0181137 OH
- Medicare enrollment
- Enrolled (PECOS I20040301000943); accepts Medicare assignment
- Medical or professional school
- University Of Toledo College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest infectious disease physician records → All 350 in Ohio → Look up another NPI →
Verify Joan M. Duggan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersState Medical Board of Ohio
Search for license 35063775Check 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 infectious disease physician in 2024
1,490 Medicare Part D claims for 98 beneficiaries, against an average of 689 among the 7,388 providers of this specialty who prescribed in Part D. Brand-name drugs were 54% of claims.
Most prescribed
- Biktarvy414 claims
- Tivicay121 claims
- Descovy114 claims
- Atorvastatin Calcium94 claims
- Amlodipine Besylate64 claims
- Dovato31 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
- University OF Toledo Physicians LLCToledo, OH
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Joan M. Duggan among 350 infectious disease physician records in Ohio
Joan M. Duggan, M.D. is one of 350 infectious disease physician records with a practice address in Ohio. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1989 · median 2002 among the 246 with a school on file
- Record last updated2026 · 61% 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 Ohio 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 Ohio
There are 350 infectious disease physician records in Ohio.
All 350 in Ohio → Every provider in Toledo → Infectious Disease Physician nationwide →
The 8 infectious disease physician records with the nearest ZIP codes
- Haig Donabedian, M.D.Toledo, OH 436141649265158
- Michael Ellis, M.D.Toledo, OH 436141871564617
- Hend Elsaghir, MBCHBToledo, OH 436141891969127
- Caitlyn Hollingshead, MDToledo, OH 436141013371566
- Varsha Moudgal, MDToledo, OH 436141700823291
- Haroon Shah, D.O.Toledo, OH 436141770962136
- Uri Khazan, MDOregon, OH 436161942280441
- Nada Taleb, MDOregon, OH 436161659560290
Common questions
What is Joan M. Duggan, M.D.'s NPI number?
Joan M. Duggan, M.D.'s National Provider Identifier (NPI) is 1891780300, issued on Sep 12, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Joan M. Duggan, M.D. located?
The NPPES record lists a practice address at 3125 Transverse Dr., Toledo, OH, 43614. Phone: (419) 383-3780. Providers update this record themselves, so call before visiting.
How can I verify Joan M. Duggan, M.D.'s license?
NPPES lists Ohio license number 35063775, as entered by the provider. Search the State Medical Board of Ohio at https://elicense.ohio.gov/oh_verifylicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joan M. Duggan, M.D. prescribe under Medicare Part D?
In 2024, Joan M. Duggan, M.D. had 1,490 Medicare Part D claims for 98 beneficiaries; the average among infectious disease physician prescribers was 689. 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.