Neil William Frederickson, M.D.
Gastroenterology Physician · Saint Louis, MO
Neil William Frederickson, M.D. is a gastroenterology physician with a practice address in Saint Louis, Missouri, and NPI 1245385327, issued on Jan 25, 2007. Check the license (Missouri R8D71, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Neil William Frederickson
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- R8D71 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1035 Bellevue Ave, Saint Louis, MO 63117
- Phone
- (314) 645-1344
- Enumerated
- Jan 25, 2007
- Record last updated
- Nov 29, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (314) 645-6457
- Entity
- Type 1 · individual
Also registered at 1035 Bellevue Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ann Armstrong, ACNP-BCAcute Care Nurse Practitioner1659670552
- Marci BenedictPharmacist1275212235
- Bruce Brown, MDSurgery Physician1699712323
- Judith Dietzler, RPHPharmacist1003899956
- Harold Dunn, M.D.Plastic Surgery Physician1326170176
- John Durbin, M.D.Internal Medicine Physician1497983787
Verify Neil William Frederickson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license R8D71Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Gastroenterology Physician providers in Missouri
There are 414 gastroenterology physician records in Missouri. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other gastroenterology physician records in Missouri
- Yazan Abdalla, M.D.Saint Louis, MO1033365358
- Ma'n Abdullah, MDColumbia, MO1598766891
- Kelsey Able, DOKansas City, MO1376806588
- Barry Abramson, M.D.Saint Louis, MO1922025980
- Tarek Abu-Rajab Tamimi, M.D.Kansas City, MO1689840282
- Ayooluwatomiwa Adekunle, MDO Fallon, MO1619593779
- Aireen-Ronalda Agulto, MDSaint Louis, MO1447771191
- Khulood Ahmed, M.D.Columbia, MO1588827893
- Mohamed Ahmed, MDKansas City, MO1194353425
- Zarir AhmedSaint Louis, MO1770937492
Common questions
What is Neil William Frederickson, M.D.'s NPI number?
Neil William Frederickson, M.D.'s National Provider Identifier (NPI) is 1245385327, issued on Jan 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Neil William Frederickson, M.D. located?
The NPPES record lists a practice address at 1035 Bellevue Ave, Saint Louis, MO, 63117. Phone: (314) 645-1344. Providers update this record themselves, so call before visiting.
How can I verify Neil William Frederickson, M.D.'s license?
NPPES lists Missouri license number R8D71, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. 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. 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.