Dr. Michael F. Flessner, MD
- Part D claims, 2024
- 60
- Publications
- 56
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 100 S Market St, Frederick, MD 21701-5527
- Practice phone
- Call (301) 600-1506
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Flessner's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Michael F. Flessner is an internist in Frederick, Maryland
Dr. Flessner practices in Frederick, Maryland.
Dr. Flessner's NPI, 1669401857, was assigned on July 1, 2006. Dr. Flessner holds Maryland license D0035499.
- NPI
- 1669401857NPI Registry (opens in a new tab)
- NPI enumeration date
- July 1, 2006
- NPI status
- Active
- Practice phone
- (301) 600-1506
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Michael F. Flessner's practice address is in Frederick, Maryland
Dr. Flessner's practice address in the NPI Registry is 100 S Market St, Frederick, MD 21701-5527. The practice phone is (301) 600-1506.
- NPI Registry address100 S Market St, Frederick, MD 21701-5527Phone(301) 600-1506
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Michael F. Flessner's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Flessner practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Flessner's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael F. Flessner is one of 3,320 internists in Maryland
Internal medicine is Dr. Flessner's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Flessner is licensed in Maryland.
Specialties and state licenses
- Internal medicine, MarylandPrimary
Internists near Dr. Flessner
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael F. Flessner's patients have a median age of 65
Across all payers, Dmand AI patient panel data puts Dr. Flessner's median patient age at 65, with 0% women.
Dr. Flessner's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 65
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Michael F. Flessner wrote 60 Medicare Part D claims in 2024
In 2024, Dr. Flessner wrote 60 Medicare Part D claims for 11 patients. 100% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $3,978 in total drug cost.
Dr. Flessner's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Michael F. Flessner has 56 publications on record
Dmand AI links 56 papers to Dr. Flessner, published from 2010 to 2023. 2016 was the busiest year, with 10. The most frequent topics are Polycystic Kidney, Autosomal Dominant, Disease Progression and Glomerular Filtration Rate. Dr. Flessner has published most often in Am J Kidney Dis. Dr. Flessner's most frequent co-authors are Vicente E. Torres, MD, Ronald D. Perrone, MD and Theodore Irving Steinman, MD.
Dr. Flessner's papers by year, 2011 to 2023
Topics Dr. Flessner writes about most
- Polycystic Kidney, Autosomal Dominant
- Disease Progression
- Glomerular Filtration Rate
- Renal Insufficiency, Chronic
- Blood Pressure
- Kidney
- Black or African American
- Creatinine
Dr. Flessner's most frequent co-authors
- Vicente E. Torres, MD21 shared papers
- Ronald D. Perrone, MD14 shared papers
- Theodore Irving Steinman, MD13 shared papers
Recent publications by Dr. Flessner
See who Dr. Flessner researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Flessner works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Sources for Dr. Michael F. Flessner's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael F. Flessner
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael F. Flessner's NPI number?
Dr. Michael F. Flessner's NPI number is 1669401857. It was assigned on July 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael F. Flessner?
Dr. Michael F. Flessner is an internist in Frederick, Maryland. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Michael F. Flessner practice?
Dr. Flessner practices at 100 S Market St, Frederick, MD 21701-5527.
What is Dr. Michael F. Flessner's office phone number?
The practice phone on file for Dr. Flessner is (301) 600-1506.
What is Dr. Michael F. Flessner's medical license number?
Dr. Flessner holds Maryland license D0035499.
What drugs does Dr. Michael F. Flessner prescribe most?
In 2020 Medicare Part D data, Dr. Flessner's most prescribed drugs by claims were Symbicort.
How long has Dr. Michael F. Flessner been practicing?
Dr. Flessner's NPI was assigned in 2006.
Does Dr. Michael F. Flessner do research?
Dmand AI links 56 publications to Dr. Flessner, published from 2010 to 2023.
Who does Dr. Michael F. Flessner publish with?
Dr. Flessner's most frequent co-authors are Vicente E. Torres, MD (21 shared papers), Ronald D. Perrone, MD (14 shared papers) and Theodore Irving Steinman, MD (13 shared papers).
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