Dr. Mark A. Tretiak, MD
- Part D claims, 2024
- 112
- Affiliated sites
- 1
- Medical group
- 1
- State licenses
- 3
- Year NPI issued
- 2006
- Practice address
- 8008 Westpark Dr, Mclean, VA 22102
- Practice phone
- Call (703) 490-8400
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Mid Atlantic States,Inc
Mclean, Virginia
Find Dr. Tretiak'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. Mark A. Tretiak is an OB-GYN in Mclean, Virginia
Dr. Tretiak practices at Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia.
Dr. Tretiak's NPI, 1851451322, was assigned on December 12, 2006. Dr. Tretiak graduated from Albany Medical College of Union University in 1993. Dr. Tretiak holds Virginia license 0101059094.
- NPI
- 1851451322NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6507917531
- NPI enumeration date
- December 12, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (703) 490-8400
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 59
- Medical school graduation
- 1993
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark A. Tretiak practices at Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia
Dr. Tretiak's primary practice is Kaiser Foundation Health Plan of the Mid Atlantic States,Inc, at 8008 Westpark Dr, Mclean, VA 22102 in Fairfax County. The practice phone is (703) 490-8400.
- Kaiser Foundation Health Plan of the Mid Atlantic States,Inc8008 Westpark Dr, Mclean, VA 22102 · Fairfax CountyPhone(703) 490-8400
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark A. Tretiak is affiliated with 2 sites of care and 1 medical group
Dr. Tretiak's primary practice is Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia. The medical group on file is Mid-Atlantic Permanente Medical Group. Dmand AI also links Dr. Tretiak to 1 more dialysis center, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark A. Tretiak's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tretiak practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Mid Atlantic States,Inc | 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. Mark A. Tretiak is one of 1,063 OB-GYNs in Virginia
Obstetrics and gynecology is Dr. Tretiak's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dmand AI has Dr. Tretiak's licenses on file in 3 states: Virginia, District of Columbia and Maryland.
Specialties and state licenses
- Obstetrics and gynecology, VirginiaPrimary
- District of Columbia license
- Maryland license
OB-GYNs near Dr. Tretiak
Counts of OB-GYNs 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 A. Tretiak's patients have a median age of 34
Across all payers, Dmand AI patient panel data puts Dr. Tretiak's median patient age at 34, with 99% women.
Dr. Tretiak's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women99%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Mark A. Tretiak wrote 112 Medicare Part D claims in 2024
In 2024, Dr. Tretiak wrote 112 Medicare Part D claims for 52 patients. 78% of them were for generic drugs. CMS names the drug for 70 of them, across 4 drugs with 11 or more claims each, at $4,732 in total drug cost. In 2023, CMS named 53 claims across 2 drugs.
Dr. Tretiak's Part D claims by kind of drug, 2024
- Generic87 claims78%
- Brand-name25 claims22%
Dr. Tretiak'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 532024: 7032%
Drugs named by CMS: 4 in 2024, 2 in 2023.
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
How Dr. Mark A. Tretiak takes part in Medicare
Dr. Tretiak accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark A. Tretiak graduated from Albany Medical College of Union University
Dr. Tretiak graduated from Albany Medical College of Union University in 1993.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark A. Tretiak'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Mark A. Tretiak
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 A. Tretiak's NPI number?
Dr. Mark A. Tretiak's NPI number is 1851451322. It was assigned on December 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark A. Tretiak?
Dr. Mark A. Tretiak is an OB-GYN in Mclean, Virginia. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Mark A. Tretiak practice?
Dr. Tretiak practices at 8008 Westpark Dr, Mclean, VA 22102. Dr. Tretiak's primary practice is Kaiser Foundation Health Plan of the Mid Atlantic States,Inc in Mclean, Virginia. Dmand AI also links Dr. Tretiak to 1 dialysis center.
What is Dr. Mark A. Tretiak's office phone number?
The practice phone on file for Dr. Tretiak is (703) 490-8400.
What is Dr. Mark A. Tretiak's medical license number?
Dr. Tretiak holds Virginia license 0101059094, one of the licenses on file in 3 states.
Which states has Dr. Mark A. Tretiak been licensed in?
Dmand AI has state licenses on file for Dr. Tretiak in Virginia, District of Columbia and Maryland.
What medical group is Dr. Mark A. Tretiak part of?
Dr. Tretiak is linked to Mid-Atlantic Permanente Medical Group.
Does Dr. Mark A. Tretiak accept Medicare?
Yes. CMS lists Dr. Tretiak as accepting Medicare assignment.
Where did Dr. Mark A. Tretiak go to medical school?
Dr. Tretiak graduated from Albany Medical College of Union University in 1993.
What drugs does Dr. Mark A. Tretiak prescribe most?
In 2024 Medicare Part D data, Dr. Tretiak's most prescribed drugs by claims were Estradiol, Climara and Medroxyprogesterone Acetate.
How long has Dr. Mark A. Tretiak been practicing?
Dr. Tretiak graduated from medical school in 1993, 33 years ago.
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