Catherine Mailander, M.D.
Pediatrics Physician · Ellicott City, MD
Catherine Mailander, M.D. is a pediatrics physician with a practice address in Ellicott City, Maryland, and NPI 1750389086, issued on Jul 11, 2005. Check the license (Maryland D0053333, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Catherine Mailander
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- D0053333 MD
Self-reported in NPPES; status is on the state search - Practice location
- 9501 Old Annapolis RD, Ellicott City, MD 21042
- Phone
- (410) 992-9339
- Enumerated
- Jul 11, 2005
- Record last updated
- Mar 9, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (410) 964-5150
- Medicaid ID
- 494901300 MD
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 1,842 in Maryland → Look up another NPI →
Also registered at 9501 Old Annapolis RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Scott Ayd, PTPhysical Therapist1821150558
- Robert Baldwin, M.D.Pediatrics Physician1669436556
- Melanie Bhatnagar, MDPediatrics Physician1699900605
- Lucy Christopher, OTOccupational Therapist1558423285
- Kiersten CrowleyStudent in an Organized Health Care Education/Training Program1003770017
- Yasmine Darrehmane, PT,DPTPhysical Therapist1851961486
Verify Catherine Mailander in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0053333Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $150.54
7 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 21,580 providers of this specialty with any payment received $842.05 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.
Catherine Mailander among 1,842 pediatrics physician records in Maryland
Catherine Mailander, M.D. is one of 1,842 pediatrics physician records with a practice address in Maryland. 35% 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, 91% newer
- In a Medicare fileYes · 35% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2009 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
19 pediatrics physician records list a practice address in Ellicott City
They are 19 of the 1,648 NPPES records with a practice address in Ellicott City, and 1,842 pediatrics physician records in Maryland.
All 1,842 in Maryland → Every provider in Ellicott City → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Robert Baldwin, M.D.Ellicott City, MD 210421669436556
- Lesly Berger, MDEllicott City, MD 210421639133036
- Melanie Bhatnagar, MDEllicott City, MD 210421699900605
- Oliver Galita, MDEllicott City, MD 210421346206489
- Peggy Guerrero-Martin, M.D.Ellicott City, MD 210421891759890
- Arti Jaiswal Balchandani, MDEllicott City, MD 210421902997943
- Betty Kyser, MDEllicott City, MD 210421679740120
- Susan Lee, M.D.Ellicott City, MD 210421336104140
Common questions
What is Catherine Mailander, M.D.'s NPI number?
Catherine Mailander, M.D.'s National Provider Identifier (NPI) is 1750389086, issued on Jul 11, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Mailander, M.D. located?
The NPPES record lists a practice address at 9501 Old Annapolis RD, Ellicott City, MD, 21042. Phone: (410) 992-9339. Providers update this record themselves, so call before visiting.
How can I verify Catherine Mailander, M.D.'s license?
NPPES lists Maryland license number D0053333, 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.
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.