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Dr. Mark Lawrence Bilowus, MD
NPI1174616692
- Medicare services, 2024
- 103
- Medicare patients, 2024
- 48
- Part D claims, 2024
- 47
- Publications
- 3
- Hospital affiliations
- 1
- Practice address
- 1850 Town Center Parkway, Reston, VA 20190
- Practice phone
- Call (703) 689-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Bilowus' professional email, personal email and mobile number
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Dr. Mark Lawrence Bilowus is a urologist in Fairfax, Virginia
Dr. Bilowus practices at Reston Hospital Center in Reston, Virginia, part of HCA Healthcare.
Dr. Bilowus' NPI, 1174616692, was assigned on October 2, 2006. Dr. Bilowus graduated from Universidad Autonoma de Guadalajara in 1980. Dr. Bilowus holds Virginia license 0101038025.
NPI and contact details
- NPI
- 1174616692NPI Registry (opens in a new tab)
- NPI enumeration date
- October 2, 2006
- NPI status
- Active
- Practice phone
- (703) 689-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Lawrence Bilowus practices in Reston and Fairfax
Dr. Bilowus' primary practice is Reston Hospital Center, at 1850 Town Center Parkway, Reston, VA 20190 in Fairfax County. The practice phone is (703) 689-9000. The NPI Registry lists Dr. Bilowus' practice address as 3620 Joseph Siewick Dr, Fairfax, VA 22033.
- Reston Hospital CenterPrimary1850 Town Center Parkway, Reston, VA 20190 · Fairfax CountyPhone(703) 689-9000
- NPI Registry address3620 Joseph Siewick Dr, Fairfax, VA 22033 · Fairfax CountyPhone(703) 478-0260
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Mark Lawrence Bilowus is affiliated with 1 site of care and 1 medical group
Dr. Bilowus' primary practice is Reston Hospital Center in Reston, Virginia, part of HCA Healthcare. The medical group on file is Inova Urgent Care Center.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark Lawrence Bilowus' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bilowus practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Reston Hospital Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Lawrence Bilowus is one of 326 urologists in Virginia
Urology is Dr. Bilowus' primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Bilowus is board certified in urology by the American Board of Urology. Dmand AI has Dr. Bilowus' licenses on file in 4 states: Virginia, New York, Maryland and District of Columbia.
Specialties and state licenses
- Urology, VirginiaPrimary
- New York license
- Maryland license
- District of Columbia license
Clinical focus
Dmand AI lists bladder disease, enlarged prostate, enlarged prostate transurethral surgery (TURP), prostate inflammation or infection and urinary endoscopy among the conditions Dr. Bilowus treats.
Urologists near Dr. Bilowus
Counts of urologists 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. Mark Lawrence Bilowus billed Medicare for 103 services in 2024
CMS data shows 103 Medicare services from Dr. Bilowus across 6 procedure codes in 2024, for 48 Medicare patients. Medicare paid $10,699 for them. Every service was in an office.
Medicare services, 2024103
Medicare patients48
Paid by Medicare$10,699
Procedure codes6
Dr. Bilowus' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1362024: 5957%
- Surgery
- 2023: 922024: 4452%
- Imaging
- 2023: 262024: 0100%
Dr. Bilowus compared with the Virginia median for urologists, 2024
- Dr. Bilowus
- Virginia median
- Medicare services
- 103vs 1,57493% below
- Medicare patients
- 48vs 57992% below
- Part D claims
- 52vs 61792% below
Medians across 313 urologists in Virginia with Dmand AI profiles that report each measure.
Dr. Bilowus' 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.
Need commercial claims for Dr. Bilowus?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Bilowus and other urologists in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Lawrence Bilowus treated 48 Medicare patients in 2024, average age 77
CMS counts 48 Medicare patients who saw Dr. Bilowus in 2024. The largest group is 65 to 74, with 21 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.79, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Bilowus' median patient age at 73, with 14% women.
Medicare patients, 202448
Average age77
Average risk score0.79
Dr. Bilowus' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Bilowus' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis63%
- Diabetes29%
- Cancer27%
- Ischemic heart disease27%
- Chronic kidney disease23%
Share of Medicare patients with each condition. A patient can have several.
Dr. Bilowus' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women14%
- Men82%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Mark Lawrence Bilowus wrote 47 Medicare Part D claims in 2024
In 2024, Dr. Bilowus wrote 47 Medicare Part D claims for 16 patients. 89% of them were for generic drugs. They cover 3 drugs, with $1,224 in total drug cost. In 2022, CMS named 68 claims across 5 drugs.
Part D claims, 202447
Drugs named by CMS3
Total drug cost$1,224
Part D patients16
Dr. Bilowus' Part D claims by kind of drug, 2024
- Generic42 claims89%
- Brand-name and other5 claims11%
Dr. Bilowus' most prescribed drugs by claims, 2023
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. Bilowus' Part D claims, 2024
- Antibiotics28%13 of 47 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 682023: 5224%
Drugs named by CMS: 3 in 2023, 5 in 2022.
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. Mark Lawrence Bilowus has 3 publications on record
Dmand AI links 3 papers to Dr. Bilowus in 2012. 2012 was the busiest year, with 2. Dr. Bilowus has published most often in J Urol. Dr. Bilowus' most frequent co-authors are David G. Bostwick, MD, MBA, Elward David Crawford, MD and Sheldon Jay Freedman, MD.
Papers3
Dr. Bilowus' most frequent co-authors
- David G. Bostwick, MD, MBA1 shared paper
- Elward David Crawford, MD1 shared paper
- Sheldon Jay Freedman, MD1 shared paper
Recent publications by Dr. Bilowus
Disorders of Sex DevelopmentFetal BloodPolycystic Ovary Syndrome
See who Dr. Bilowus researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Bilowus works with, so you can find a warm path to the right urologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Lawrence Bilowus received $509 in industry payments from 2016 to 2024
CMS Open Payments shows 17 general payments to Dr. Bilowus from 8 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 94% of the total. Astellas Pharma US Inc paid the most, $142.
General payments to Dr. Bilowus by program year, 2016 to 2024
General payments to Dr. Bilowus by kind, 2016 to 2024
$509in total
- Food and beverage$47994%
- Education$296%
Companies that paid Dr. Bilowus the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark Lawrence Bilowus graduated from Universidad Autonoma de Guadalajara
Dr. Bilowus graduated from Universidad Autonoma de Guadalajara in 1980.
- Medical school
- Board certified in urology
Source: Dmand AI Professional Profile Data
Dr. Mark Lawrence Bilowus accepts plans from 6 insurance carriers
Dr. Bilowus is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Molina
- Regence Health Plans
- CareFirst BlueCross BlueShield
Plan types Dr. Bilowus accepts, by number of carriers
- Medicare6
- PPO4
- HMO2
- EPO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark Lawrence Bilowus'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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. Mark Lawrence Bilowus
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. Mark Lawrence Bilowus' NPI number?
Dr. Mark Lawrence Bilowus' NPI number is 1174616692. It was assigned on October 2, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Lawrence Bilowus?
Dr. Mark Lawrence Bilowus is a urologist in Fairfax, Virginia. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Mark Lawrence Bilowus practice?
Dr. Bilowus practices at 1850 Town Center Parkway, Reston, VA 20190. Dr. Bilowus also practices at 3620 Joseph Siewick Dr, Fairfax, VA 22033. Dr. Bilowus' primary practice is Reston Hospital Center in Reston, Virginia, part of HCA Healthcare.
What is Dr. Mark Lawrence Bilowus' office phone number?
The practice phone on file for Dr. Bilowus is (703) 689-9000.
What is Dr. Mark Lawrence Bilowus' medical license number?
Dr. Bilowus holds Virginia license 0101038025, one of the licenses on file in 4 states.
Which states has Dr. Mark Lawrence Bilowus been licensed in?
Dmand AI has state licenses on file for Dr. Bilowus in Virginia (1985 to 2026), New York (since 1981), Maryland (1985 to 2022) and District of Columbia (1985).
Which hospitals is Dr. Mark Lawrence Bilowus affiliated with?
Dr. Bilowus practices at Reston Hospital Center in Reston, Virginia.
What medical group is Dr. Mark Lawrence Bilowus part of?
Dr. Bilowus is linked to Inova Urgent Care Center.
Does Dr. Mark Lawrence Bilowus accept Medicare?
Yes. CMS data shows Dr. Bilowus billed Medicare for 103 services in 2024.
How many Medicare patients does Dr. Mark Lawrence Bilowus see?
CMS counts 48 Medicare patients who saw Dr. Bilowus in 2024, with an average age of 77.
Show 9 more questionsShow fewer questions
Is Dr. Mark Lawrence Bilowus board certified?
Yes. Dr. Bilowus is board certified in urology by the American Board of Urology.
What services does Dr. Mark Lawrence Bilowus bill to Medicare?
In 2024, Dr. Bilowus' most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and surgery: urinary system (51729).
Where did Dr. Mark Lawrence Bilowus go to medical school?
Dr. Bilowus graduated from Universidad Autonoma de Guadalajara in 1980.
What drugs does Dr. Mark Lawrence Bilowus prescribe most?
In 2023 Medicare Part D data, Dr. Bilowus' most prescribed drugs by claims were Finasteride, Tamsulosin HCl and Cephalexin.
Has Dr. Mark Lawrence Bilowus received payments from drug or device companies?
CMS Open Payments shows $509 in general payments to Dr. Bilowus from 8 companies from 2016 to 2024. The largest total came from Astellas Pharma US Inc.
How long has Dr. Mark Lawrence Bilowus been practicing?
Dr. Bilowus graduated from medical school in 1980, 46 years ago.
Does Dr. Mark Lawrence Bilowus do research?
Dmand AI links 3 publications to Dr. Bilowus.
Who does Dr. Mark Lawrence Bilowus publish with?
Dr. Bilowus' most frequent co-authors are David G. Bostwick, MD, MBA (1 shared paper), Elward David Crawford, MD (1 shared paper) and Sheldon Jay Freedman, MD (1 shared paper).
What insurance does Dr. Mark Lawrence Bilowus accept?
Dr. Bilowus is in network with 6 carriers, including Aetna, Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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