Maria M. Oliva-Hemker, M.D.
Pediatric Gastroenterology Physician · Baltimore, MD
Maria M. Oliva-Hemker, M.D. is a pediatric gastroenterology physician with a practice address in Baltimore, Maryland, and NPI 1306890801, issued on May 20, 2006. Check the license (Maryland D39176, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Maria M. Oliva-Hemker
- Credential
- M.D.
- Primary taxonomy
- Pediatric Gastroenterology Physician 2080P0206X
- License number
- D39176 MD
Self-reported in NPPES; status is on the state search - Practice location
- 601 N Caroline St, Baltimore, MD 21287
- Phone
- (410) 955-8769
- Enumerated
- May 20, 2006
- Record last updated
- Feb 5, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicaid ID
- 0070451200 MD
- Entity
- Type 1 · individual
8 nearest pediatric gastroenterology physician records → All 34 in Maryland → Look up another NPI →
Also registered at 601 N Caroline St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Maria M. Oliva-Hemker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D39176Check 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: $39.91
2 payments; by number, the most common kind was food and beverage; the largest payer was Qol Medical, LLC. The 1,184 providers of this specialty with any payment received $2,585.05 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.
Maria M. Oliva-Hemker among 34 pediatric gastroenterology physician records in Maryland
Maria M. Oliva-Hemker, M.D. is one of 34 pediatric gastroenterology physician records with a practice address in Maryland. 53% 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 3% of them.
- NPI issued2006 · 3% of these records are older, 53% newer
- In a Medicare fileYes · 53% of these records are
- In the CMS Doctors and Clinicians fileNo · 18% of these records are
- Record last updated2014 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0206X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Gastroenterology Physician providers in Maryland
There are 34 pediatric gastroenterology physician records in Maryland.
All 34 in Maryland → Every provider in Baltimore → Pediatric Gastroenterology Physician nationwide →
The 8 pediatric gastroenterology physician records with the nearest ZIP codes
- Susan Aucott, M.D.Baltimore, MD 212871649235979
- Benjamin Caballero, M.D.Baltimore, MD 212871265490221
- Shelly Joseph, M.D.Baltimore, MD 212871255712402
- Wikrom Karnsakul, M.D.Baltimore, MD 212871366522351
- Shaija Kutty, MDBaltimore, MD 212871093977209
- Kenneth Ng, D.O.Baltimore, MD 212871972856870
- Sara Smith, M.D.Baltimore, MD 212871114169414
- Sarah Lowry Adamitis, M.D.Baltimore, MD 212641477085496
Common questions
What is Maria M. Oliva-Hemker, M.D.'s NPI number?
Maria M. Oliva-Hemker, M.D.'s National Provider Identifier (NPI) is 1306890801, issued on May 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Maria M. Oliva-Hemker, M.D. located?
The NPPES record lists a practice address at 601 N Caroline St, Baltimore, MD, 21287. Phone: (410) 955-8769. Providers update this record themselves, so call before visiting.
How can I verify Maria M. Oliva-Hemker, M.D.'s license?
NPPES lists Maryland license number D39176, 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.