Dr. Michael A. Fenstermaker, MD

  • Upper Marlboro, MD
  • Urologist
NPI1679952006PAC ID8426363458
Medicare services, 2024
38
Medicare patients, 2024
48
Part D claims, 2024
1,507
Publications
13
Hospital affiliations
1
Practice address
1221 Mercantile Lane, Largo, MD 20774
Practice phone
Call (301) 300-8733
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Ambulatory Surgery Center at Largo Medical Center

Surgery Center - Medicare-Certified · Largo, Maryland

See all 4 affiliations

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Dr. Michael A. Fenstermaker is a urologist in Upper Marlboro, Maryland

Dr. Fenstermaker practices at Ambulatory Surgery Center at Largo Medical Center in Largo, Maryland.

Dr. Fenstermaker's NPI, 1679952006, was assigned on May 19, 2015. Dr. Fenstermaker graduated from New York University School of Medicine in 2015. Dr. Fenstermaker holds Maryland license D0088762.

NPI and contact details
Medicare PAC ID
8426363458
NPI enumeration date
May 19, 2015
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(301) 300-8733
Professional email
Get email
Personal email
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Mobile number
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Sex
Male
Estimated age
37
Medical school graduation
2015

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Dr. Michael A. Fenstermaker practices at Ambulatory Surgery Center at Largo Medical Center in Largo, Maryland

Dr. Fenstermaker's primary practice is Ambulatory Surgery Center at Largo Medical Center, at 1221 Mercantile Lane, Largo, MD 20774. The practice phone is (301) 300-8733.

  • Ambulatory Surgery Center at Largo Medical Center
    1221 Mercantile Lane, Largo, MD 20774Phone(301) 300-8733

Source: Dmand AI Affiliation Data

Dr. Michael A. Fenstermaker is affiliated with 3 sites of care and 1 medical group

Dr. Fenstermaker's primary practice is Ambulatory Surgery Center at Largo Medical Center in Largo, Maryland. Dr. Fenstermaker is also affiliated with Holy Cross Hospital. The medical group on file is Mid-Atlantic Permanente Medical Group. Dmand AI also links Dr. Fenstermaker to 1 more dialysis center, named with a free account.

Ambulatory Surgery Center at Largo Medical CenterSurgery Center - Medicare-Certified · Largo, MarylandPrimary
Holy Cross HospitalAcute care hospital, Silver Spring, MDMid-Atlantic Permanente Medical GroupPrimary care group, Largo, MD1 dialysis centerName with a free account
See all 4 affiliations for Dr. Fenstermaker

Source: Dmand AI Affiliation Data

Dmand AI tracks the EHR system at Dr. Michael A. Fenstermaker's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fenstermaker practices, 3 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Ambulatory Surgery Center at Largo Medical CenterAvailable with a free account
+2 more affiliated sitesAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Michael A. Fenstermaker is one of 268 urologists in Maryland

Urology is Dr. Fenstermaker's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Fenstermaker is licensed in Maryland.

Specialties and state licenses

  • Urology, MarylandPrimaryLicense D0088762 · taxonomy 208800000X

Urologists near Dr. Fenstermaker

Counts of urologists with a Dmand AI profile, by place and practice. Each opens the list.

268urologists in Maryland
7urologists in Upper Marlboro

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Dr. Michael A. Fenstermaker billed Medicare for 38 services in 2024

CMS data shows 38 Medicare services from Dr. Fenstermaker across 2 procedure codes in 2024, for 48 Medicare patients. Medicare paid $1,818 for them. Every service was in an office.

Medicare services, 202438
Medicare patients48
Paid by Medicare$1,818
Procedure codes2

Dr. Fenstermaker's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 372024: 383%

Dr. Fenstermaker compared with the Maryland median for urologists, 2024

  • Dr. Fenstermaker
  • Maryland median
Medicare services
38vs 2,52298% below
Medicare patients
48vs 69093% below
Part D claims
1,382vs 6002.3 times

Medians across 265 urologists in Maryland with Dmand AI profiles that report each measure.

Dr. Fenstermaker's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Fenstermaker

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Michael A. Fenstermaker treated 48 Medicare patients in 2024, average age 73

CMS counts 48 Medicare patients who saw Dr. Fenstermaker in 2024. The largest group is 65 to 74, with 26 patients. 65% of them have high blood pressure, and 46% have diabetes. Their average risk score is 1.03, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Fenstermaker's median patient age at 64, with 26% women.

Medicare patients, 202448
Average age73
Average risk score1.03

Dr. Fenstermaker's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Fenstermaker's Medicare patients by sex, 2024

  • Women1327%
  • Men3573%

Chronic conditions among Dr. Fenstermaker's Medicare patients, 2024

  1. High blood pressure65%
  2. Diabetes46%
  3. High cholesterol44%
  4. Arthritis29%
  5. Cancer27%
  6. Chronic kidney disease25%

Share of Medicare patients with each condition. A patient can have several.

Dr. Fenstermaker's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 64

Patient panel by sex, all payers

  • Women26%
  • Men74%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Michael A. Fenstermaker wrote 1,507 Medicare Part D claims in 2024

In 2024, Dr. Fenstermaker wrote 1,507 Medicare Part D claims for 439 patients. 91% of them were for generic drugs. CMS names the drug for 1,382 of them, across 23 drugs with 11 or more claims each, at $129,719 in total drug cost. In 2023, CMS named 1,189 claims across 17 drugs.

Part D claims, 20241,507
Drugs named by CMS23
Total drug cost$129,719
Part D patients439

Dr. Fenstermaker's Part D claims by kind of drug, 2024

  • Generic1,365 claims91%
  • Brand-name and other142 claims9%

Dr. Fenstermaker's most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Dr. Fenstermaker's Part D claims, 2024

  • Opioids5%74 of 1,507 claims
  • Antibiotics19%286 of 1,507 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

Part D claims for drugs CMS names, 2023 to 2024

  • 2023
  • 2024
Claims for drugs CMS names
2023: 1,1892024: 1,38216%

Drugs named by CMS: 23 in 2024, 17 in 2023.

See all prescribing by Dr. Fenstermaker

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

Dr. Michael A. Fenstermaker offers telehealth to Medicare patients

Dr. Fenstermaker accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Fenstermaker as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Prostate resection: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

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Dr. Michael A. Fenstermaker has 13 publications on record

Dmand AI links 13 papers to Dr. Fenstermaker, published from 2013 to 2023. 2015 was the busiest year, with 4. The most frequent topics are Prostatic Neoplasms, Neoplasm Grading and Prostate-Specific Antigen. Dr. Fenstermaker has published most often in Urology. Dr. Fenstermaker's most frequent co-authors are Xiaosong Meng, MD, PhD, James Steven Wysock, MD and Jonathan Melamed, MD.

Papers13
Years published2013 to 2023

Dr. Fenstermaker's papers by year, 2013 to 2023

Topics Dr. Fenstermaker writes about most

  • Prostatic Neoplasms
  • Neoplasm Grading
  • Prostate-Specific Antigen
  • Health Knowledge, Attitudes, Practice
  • Magnetic Resonance Imaging, Interventional
  • Multimodal Imaging
  • Prostate
  • Ultrasonography, Interventional

Dr. Fenstermaker's most frequent co-authors

Recent publications by Dr. Fenstermaker

See all 13 publications and co-authors

See who Dr. Fenstermaker researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fenstermaker works with, so you can find a warm path to the right urologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Michael A. Fenstermaker graduated from New York University School of Medicine

Dr. Fenstermaker graduated from New York University School of Medicine in 2015.

  1. Medical schoolNew York University School of Medicine

Source: Dmand AI Professional Profile Data

Sources for Dr. Michael A. Fenstermaker's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Training, board certification and membershipsDmand AI Professional Profile Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Michael A. Fenstermaker

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 A. Fenstermaker's NPI number?

Dr. Michael A. Fenstermaker's NPI number is 1679952006. It was assigned on May 19, 2015, and it is active in the NPI Registry.

What kind of doctor is Dr. Michael A. Fenstermaker?

Dr. Michael A. Fenstermaker is a urologist in Upper Marlboro, Maryland. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).

Where does Dr. Michael A. Fenstermaker practice?

Dr. Fenstermaker practices at 1221 Mercantile Lane, Largo, MD 20774. Dr. Fenstermaker's primary practice is Ambulatory Surgery Center at Largo Medical Center in Largo, Maryland. Dmand AI also links Dr. Fenstermaker to 1 dialysis center.

What is Dr. Michael A. Fenstermaker's office phone number?

The practice phone on file for Dr. Fenstermaker is (301) 300-8733.

What is Dr. Michael A. Fenstermaker's medical license number?

Dr. Fenstermaker holds Maryland license D0088762.

Which hospitals is Dr. Michael A. Fenstermaker affiliated with?

Dr. Fenstermaker is affiliated with Holy Cross Hospital.

What medical group is Dr. Michael A. Fenstermaker part of?

Dr. Fenstermaker is linked to Mid-Atlantic Permanente Medical Group.

Does Dr. Michael A. Fenstermaker accept Medicare?

Yes. CMS data shows Dr. Fenstermaker billed Medicare for 38 services in 2024, and Dr. Fenstermaker accepts Medicare assignment.

Does Dr. Michael A. Fenstermaker offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Fenstermaker as offering telehealth services.

How many Medicare patients does Dr. Michael A. Fenstermaker see?

CMS counts 48 Medicare patients who saw Dr. Fenstermaker in 2024, with an average age of 73.

Show 6 more questionsShow fewer questions

What services does Dr. Michael A. Fenstermaker bill to Medicare?

In 2024, Dr. Fenstermaker's most billed Medicare services were care management and other visits (99441) and office visit, established patient (99213).

Where did Dr. Michael A. Fenstermaker go to medical school?

Dr. Fenstermaker graduated from New York University School of Medicine in 2015.

What drugs does Dr. Michael A. Fenstermaker prescribe most?

In 2024 Medicare Part D data, Dr. Fenstermaker's most prescribed drugs by claims were Tamsulosin HCl, Solifenacin Succinate and Finasteride.

How long has Dr. Michael A. Fenstermaker been practicing?

Dr. Fenstermaker graduated from medical school in 2015, 11 years ago.

Does Dr. Michael A. Fenstermaker do research?

Dmand AI links 13 publications to Dr. Fenstermaker, published from 2013 to 2023.

Who does Dr. Michael A. Fenstermaker publish with?

Dr. Fenstermaker's most frequent co-authors are Xiaosong Meng, MD, PhD (3 shared papers), James Steven Wysock, MD (3 shared papers) and Jonathan Melamed, MD (2 shared papers).

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