Mary E. Bollinger, D.O
Pediatric Allergy/Immunology Physician · Baltimore, MD
Mary E. Bollinger, D.O is a pediatric allergy/immunology physician with a practice address in Baltimore, Maryland, and NPI 1629011127, issued on Jun 13, 2006. Check the license (Maryland H45009, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Mary E. Bollinger
- Credential
- D.O
- Primary taxonomy
- Pediatric Allergy/Immunology Physician 2080P0201X
- License number
- H45009 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 328-6749
- Enumerated
- Jun 13, 2006
- Record last updated
- Nov 5, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (410) 328-6136
- Medicaid ID
- 739900600 MD
- Medicare enrollment
- Enrolled (PECOS I20101102001371); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1989
- Entity
- Type 1 · individual
8 nearest pediatric allergy/immunology physician records → All 22 in Maryland → Look up another NPI →
Also registered at 22 S Greene St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ifedayo Abiola-Matthew, CRNPAcute Care Nurse Practitioner1033781117
Verify Mary E. Bollinger in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license H45009Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average pediatric allergy/immunology physician in 2024
50 Medicare Part D claims, against an average of 259 among the 198 providers of this specialty who prescribed in Part D.
Most prescribed
- Montelukast Sodium17 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: $53.70
2 payments; by number, the most common kind was food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 289 providers of this specialty with any payment received $7,101.54 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
- University OF Maryland Pediatric Associates, PAColumbia, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary E. Bollinger among 22 pediatric allergy/immunology physician records in Maryland
Mary E. Bollinger, D.O is one of 22 pediatric allergy/immunology physician records with a practice address in Maryland. 27% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 41% newer
- In a Medicare fileYes · 27% of these records are
- In the CMS Doctors and Clinicians fileYes · 18% of these records are
- Record last updated2008 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0201X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Allergy/Immunology Physician providers in Maryland
There are 22 pediatric allergy/immunology physician records in Maryland.
All 22 in Maryland → Every provider in Baltimore → Pediatric Allergy/Immunology Physician nationwide →
The 8 pediatric allergy/immunology physician records with the nearest ZIP codes
- John Farley, MDBaltimore, MD 212011306889373
- Debra Houck, CRNPBaltimore, MD 212011437162518
- Anupama Kewalramani, MDBaltimore, MD 212011194767699
- Prasanna Nair, M.D.Baltimore, MD 212011598703100
- Vicki Tepper, PHDBaltimore, MD 212011568491876
- Douglas Watson, MDBaltimore, MD 212011720015175
- Richard Layton, MDTowson, MD 212041699878603
- Julia Wisniewski, M.D.Baltimore, MD 212101205095593
Common questions
What is Mary E. Bollinger, D.O's NPI number?
Mary E. Bollinger, D.O's National Provider Identifier (NPI) is 1629011127, issued on Jun 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary E. Bollinger, D.O located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 328-6749. Providers update this record themselves, so call before visiting.
How can I verify Mary E. Bollinger, D.O's license?
NPPES lists Maryland license number H45009, 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 Mary E. Bollinger, D.O prescribe under Medicare Part D?
In 2024, Mary E. Bollinger, D.O had 50 Medicare Part D claims; the average among pediatric allergy/immunology physician prescribers was 259. 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.