Charles B. Marek, MD
Obstetrics & Gynecology Physician · Middle River, MD
Charles B. Marek, MD is an obstetrics & gynecology physician with a practice address in Middle River, Maryland, and NPI 1285621094, issued on Oct 6, 2005. Check the license (Maryland D0013064, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Charles B. Marek
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- D0013064 MD
Self-reported in NPPES; status is on the state search - Practice location
- 4021 Bay Dr, Middle River, MD 21220
- Phone
- (410) 916-4090
- Enumerated
- Oct 6, 2005
- Record last updated
- Jul 14, 2026
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,034 in Maryland → Look up another NPI →
Verify Charles B. Marek in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0013064Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
36 Medicare Part D claims, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
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.
Charles B. Marek among 1,034 obstetrics & gynecology physician records in Maryland
Charles B. Marek, MD is one of 1,034 obstetrics & gynecology physician records with a practice address in Maryland. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2026 · 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 Maryland 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 Maryland
There are 1,034 obstetrics & gynecology physician records in Maryland.
All 1,034 in Maryland → Every provider in Middle River → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- James Chisum, M.D.Baltimore, MD 212211457329443
- Kamal Hamod, M.D.Essex, MD 212211093814311
- Jashoman Banerjee, M.D.Baltimore, MD 212181386804144
- Lauren CosgriffBaltimore, MD 212181538628326
- Richelle Gaskin, MDBaltimore, MD 212181932177730
- Rakhi Gupta, M.D.Baltimore, MD 212181811966690
- Nicola London, M.D.Baltimore, MD 212221295704708
- Leigh Matlaga, M.D.Baltimore, MD 212221861453581
Common questions
What is Charles B. Marek, MD's NPI number?
Charles B. Marek, MD's National Provider Identifier (NPI) is 1285621094, issued on Oct 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Charles B. Marek, MD located?
The NPPES record lists a practice address at 4021 Bay Dr, Middle River, MD, 21220. Phone: (410) 916-4090. Providers update this record themselves, so call before visiting.
How can I verify Charles B. Marek, MD's license?
NPPES lists Maryland license number D0013064, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Charles B. Marek, MD prescribe under Medicare Part D?
In 2024, Charles B. Marek, MD had 36 Medicare Part D claims; 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.