Dr. Gary S. Fialk, MD
- Medicare services, 2022
- 899
- Part D claims, 2024
- 13
- Publications
- 1
- Industry payments
- $5,437
- Affiliated sites
- 2
- Practice address
- 1860 Town Center Drive, Suite G 100, Reston, VA 20190
- Practice phone
- Call (703) 639-3100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Reston Surgery Center
Surgery Center - Medicare-Certified · Reston, Virginia
Find Dr. Fialk'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. Gary S. Fialk is a urologist in Reston, Virginia
Dr. Fialk practices at Reston Surgery Center in Reston, Virginia.
Dr. Fialk's NPI, 1376518670, was assigned on February 21, 2006. Dr. Fialk graduated from University of Connecticut School of Medicine in 1981. Dr. Fialk holds Virginia license 010153797.
- NPI
- 1376518670NPI Registry (opens in a new tab)
- NPI enumeration date
- February 21, 2006
- NPI status
- Active
- Practice phone
- (703) 639-3100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 71
- Medical school graduation
- 1981
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Gary S. Fialk practices at Reston Surgery Center in Reston, Virginia
Dr. Fialk's primary practice is Reston Surgery Center, at 1860 Town Center Drive, Suite G 100, Reston, VA 20190. The practice phone is (703) 639-3100.
- Reston Surgery Center1860 Town Center Drive, Suite G 100, Reston, VA 20190Phone(703) 639-3100
Source: Dmand AI Affiliation Data
Dr. Gary S. Fialk is affiliated with 2 sites of care and 1 medical group
Dr. Fialk's primary practice is Reston Surgery Center in Reston, Virginia. The medical group on file is Loudoun Medical Group. Dmand AI also links Dr. Fialk to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Gary S. Fialk's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fialk practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Reston Surgery Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Gary S. Fialk is one of 326 urologists in Virginia
Urology is Dr. Fialk's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Fialk is licensed in Virginia.
Specialties and state licenses
- Urology, VirginiaPrimary
Urologists near Dr. Fialk
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. Gary S. Fialk billed Medicare for 899 services in 2022
CMS data shows 899 Medicare services from Dr. Fialk across 9 procedure codes in 2022. Medicare paid $38,287 for them. Every service was in an office.
Dr. Fialk's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 9332022: 46250%
- Surgery
- 2021: 4592022: 23150%
- Lab and pathology
- 2021: 3882022: 20647%
- Drugs given in the office
- 2021: 662022: 0100%
- Imaging
- 2021: 292022: 0100%
- Tests and treatments
- 2021: 182022: 0100%
Dr. Fialk compared with the Virginia median for urologists, 2022
- Dr. Fialk
- Virginia median
- Medicare services
- 899vs 1,57443% below
- Part D claims
- 61vs 61790% below
Medians across 313 urologists in Virginia with Dmand AI profiles that report each measure.
Dr. Fialk's most billed Medicare procedure codes, 2022
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. Fialk?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fialk and other urologists in Virginia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Gary S. Fialk's patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Fialk's median patient age at 74, with 9% women.
Dr. Fialk's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women9%
- Men88%
Source: Dmand AI Patient Panel Data
Dr. Gary S. Fialk wrote 13 Medicare Part D claims in 2024
In 2024, Dr. Fialk wrote 13 Medicare Part D claims. 100% of them were for generic drugs. They cover 2 drugs, with $1,556 in total drug cost. In 2022, CMS named 637 claims across 12 drugs.
Dr. Fialk's 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.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 6372023: 6190%
Drugs named by CMS: 2 in 2023, 12 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. Gary S. Fialk has 1 publication on record
Dmand AI links 1 paper to Dr. Fialk in 2022.
Recent publications by Dr. Fialk
See who Dr. Fialk researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fialk 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. Gary S. Fialk received $5,437 in industry payments from 2016 to 2024
CMS Open Payments shows 132 general payments to Dr. Fialk from 27 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 67% of the total. NxThera, Inc. paid the most, $1,978.
General payments to Dr. Fialk by program year, 2016 to 2024
General payments to Dr. Fialk by kind, 2016 to 2024
- Food and beverage$3,64267%
- Gifts$1,75232%
- Education$431%
Companies that paid Dr. Fialk 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. Gary S. Fialk graduated from University of Connecticut School of Medicine
Dr. Fialk graduated from University of Connecticut School of Medicine in 1981.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Gary S. Fialk'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand 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 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 |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Gary S. Fialk
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. Gary S. Fialk's NPI number?
Dr. Gary S. Fialk's NPI number is 1376518670. It was assigned on February 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Gary S. Fialk?
Dr. Gary S. Fialk is a urologist in Reston, Virginia. The primary specialty in the NPI Registry is Urology Physician (taxonomy code 208800000X).
Where does Dr. Gary S. Fialk practice?
Dr. Fialk practices at 1860 Town Center Drive, Suite G 100, Reston, VA 20190. Dr. Fialk's primary practice is Reston Surgery Center in Reston, Virginia. Dmand AI also links Dr. Fialk to 1 group practice or clinic.
What is Dr. Gary S. Fialk's office phone number?
The practice phone on file for Dr. Fialk is (703) 639-3100.
What is Dr. Gary S. Fialk's medical license number?
Dr. Fialk holds Virginia license 010153797.
What medical group is Dr. Gary S. Fialk part of?
Dr. Fialk is linked to Loudoun Medical Group.
Does Dr. Gary S. Fialk accept Medicare?
Yes. CMS data shows Dr. Fialk billed Medicare for 899 services in 2022.
What services does Dr. Gary S. Fialk bill to Medicare?
In 2022, Dr. Fialk's most billed Medicare services were office visit, established patient (99213), lab and pathology test (81002) and surgery: urinary system (51798).
Where did Dr. Gary S. Fialk go to medical school?
Dr. Fialk graduated from University of Connecticut School of Medicine in 1981.
What drugs does Dr. Gary S. Fialk prescribe most?
In 2023 Medicare Part D data, Dr. Fialk's most prescribed drugs by claims were Tamsulosin HCl and Finasteride.
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Has Dr. Gary S. Fialk received payments from drug or device companies?
CMS Open Payments shows $5,437 in general payments to Dr. Fialk from 27 companies from 2016 to 2024. The largest total came from NxThera, Inc.
How long has Dr. Gary S. Fialk been practicing?
Dr. Fialk graduated from medical school in 1981, 45 years ago.
Does Dr. Gary S. Fialk do research?
Dmand AI links 1 publication to Dr. Fialk.
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