Kathryn I. Marko, MD
Obstetrics & Gynecology Physician · Washington, DC
Kathryn I. Marko, MD is an obstetrics & gynecology physician with a practice address in Washington, District of Columbia, and NPI 1366636375, issued on Sep 3, 2007. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Kathryn I. Marko
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036.124489 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2150 Pennsylvania Ave NW, Washington, DC 20037
- Phone
- (202) 741-2500
- Enumerated
- Sep 3, 2007
- Record last updated
- Aug 4, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (202) 741-2550
- Medicare enrollment
- Enrolled (PECOS I20111115000189); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2001
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 250 in District of Columbia → Look up another NPI →
Also registered at 2150 Pennsylvania Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Rim Abdallah, M.D.Student in an Organized Health Care Education/Training Program1962896886
- Rami AbdulbakiAnatomic Pathology & Clinical Pathology Physician1851950109
Verify Kathryn I. Marko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
136 Medicare Part D claims for 42 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Estradiol43 claims
- Estradiol (Twice Weekly)12 claims
- Estradiol (Once Weekly)11 claims
- Progesterone11 claims
- Raloxifene Hcl11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $194.52
8 payments; by number, the most common kind was food and beverage; the largest payer was Daiichi Sankyo Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Medical Faculty Associates, IncWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathryn I. Marko among 250 obstetrics & gynecology physician records in District of Columbia
Kathryn I. Marko, MD is one of 250 obstetrics & gynecology physician records with a practice address in District of Columbia. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 30% of them.
- NPI issued2007 · 30% of these records are older, 61% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2001 · median 2012 among the 153 with a school on file
- Record last updated2011 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in District of Columbia
There are 250 obstetrics & gynecology physician records in District of Columbia.
All 250 in District of Columbia → Every provider in Washington → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Damian Alagia, MDWashington, DC 200371184697237
- Amy Banulis, MDWashington, DC 200371730240920
- Robert Bridges, M.D.Washington, DC 200371285665588
- Margaret Byrne, M.D.Washington, DC 200371174597801
- Kimberly Colden Massey, MDWashington, DC 200371174682728
- Nadine Ford, M.D.Washington, DC 200371154371128
- Nancy Gaba, MDWashington, DC 200371477526879
- Paul Gindoff, MDWashington, DC 200371083688410
Common questions
What is Kathryn I. Marko, MD's NPI number?
Kathryn I. Marko, MD's National Provider Identifier (NPI) is 1366636375, issued on Sep 3, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kathryn I. Marko, MD located?
The NPPES record lists a practice address at 2150 Pennsylvania Ave NW, Washington, DC, 20037. Phone: (202) 741-2500. Providers update this record themselves, so call before visiting.
How can I verify Kathryn I. Marko, MD's license?
Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Kathryn I. Marko, MD prescribe under Medicare Part D?
In 2024, Kathryn I. Marko, MD had 136 Medicare Part D claims for 42 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.