J Marc Simard, MD, PHD
Neurological Surgery Physician · Baltimore, MD
J Marc Simard, MD, PHD is a neurological surgery physician with a practice address in Baltimore, Maryland, and NPI 1326093790, issued on May 24, 2006. Check the license (Maryland D44232, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- J Marc Simard
- Credential
- MD, PHD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- D44232 MD
Self-reported in NPPES; status is on the state search - Practice location
- 22 S Greene St, Baltimore, MD 21201
- Phone
- (410) 328-8209
- Enumerated
- May 24, 2006
- Record last updated
- Feb 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (410) 328-1413
- Medicare enrollment
- Enrolled (PECOS I20060717000126); accepts Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 1980
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 163 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.
- Bizhan Aarabi, MDNeurological Surgery Physician1174578876
- Elsadig Abdalla, MDStudent in an Organized Health Care Education/Training Program1073364477
- Ehssan AbdolalizadehStudent in an Organized Health Care Education/Training Program1093653271
- Mohammad Abdulelah, MDStudent in an Organized Health Care Education/Training Program1114650108
- Leenah AbdulgaderStudent in an Organized Health Care Education/Training Program1386323301
- Ifedayo Abiola-Matthew, CRNPAcute Care Nurse Practitioner1033781117
Verify J Marc Simard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D44232Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- University OF Maryland Neurosurgery Associates P ABaltimore, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
J Marc Simard among 163 neurological surgery physician records in Maryland
J Marc Simard, MD, PHD is one of 163 neurological surgery physician records with a practice address in Maryland. 76% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 51% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1980 · median 2002 among the 109 with a school on file
- Record last updated2008 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in Maryland
There are 163 neurological surgery physician records in Maryland.
All 163 in Maryland → Every provider in Baltimore → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Bizhan Aarabi, MDBaltimore, MD 212011174578876
- Enslin Aldrich, MDBaltimore, MD 212011780639393
- Harish Babu, M.D. PHDBaltimore, MD 212011760936157
- Jacob Cherian, MDBaltimore, MD 212011609163898
- Howard Eisenberg, MDBaltimore, MD 212011760421507
- Alexander Ksendzovsky, M.D.Baltimore, MD 212011326305095
- Mohamed Labib, MDBaltimore, MD 212011801288816
- Joshua Olexa, MDBaltimore, MD 212011174020044
Common questions
What is J Marc Simard, MD, PHD's NPI number?
J Marc Simard, MD, PHD's National Provider Identifier (NPI) is 1326093790, issued on May 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is J Marc Simard, MD, PHD located?
The NPPES record lists a practice address at 22 S Greene St, Baltimore, MD, 21201. Phone: (410) 328-8209. Providers update this record themselves, so call before visiting.
How can I verify J Marc Simard, MD, PHD's license?
NPPES lists Maryland license number D44232, 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.