Sydney K. Greenwalt, PHD
Psychologist · Saint Louis, MO
Sydney K. Greenwalt, PHD is a psychologist with a practice address in Saint Louis, Missouri, and NPI 1578305223, issued on Jun 12, 2024. Check the license (Missouri 2024019727, as entered in NPPES) with the Missouri board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sydney K. Greenwalt
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 2024019727 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1129 Macklind Ave, Saint Louis, MO 63110
- Phone
- (314) 289-9411
- Enumerated
- Jun 12, 2024
- Record last updated
- Jun 12, 2024
- Medicare enrollment
- Enrolled (PECOS I20241026000046); accepts Medicare assignment
- Medical or professional school
- University Of Missouri, Kansas City, School Of Medicine, 2020
- Entity
- Type 1 · individual
Also registered at 1129 Macklind Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ann Adkins, PSY DCognitive & Behavioral Psychologist1972666808
- Sara AghaPsychiatry Physician1912585829
- Kaylie Allen, PH.D.Psychologist1841667029
- Anita Bazile, PH DCognitive & Behavioral Psychologist1801959713
- Laura Bumberry, PSY.D.Clinical Psychologist1295943082
- Jessica Burich, PMHNPPsychiatric/Mental Health Nurse Practitioner1003268152
Verify Sydney K. Greenwalt in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Missouri board licenses this profession
Search for license 2024019727Check 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
- St. Louis Behavioral Medicine Institute IncSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Psychologist providers in Missouri
There are 579 psychologist records in Missouri.
Other psychologist records in Missouri
- Jocelyn Abanes, PSY.DColumbia, MO1013270578
- Dane Abegg, PH.DKansas City, MO1962371203
- Richard Abloff, PHD ABPPKansas City, MO1528270683
- Richard Adams, PSYDBolivar, MO1205925427
- Brittany Allen, PHDSpringfield, MO1043474778
- Jimmie Allen, ED.DSaint Joseph, MO1174640544
- Kaylie Allen, PH.D.Saint Louis, MO1841667029
- Keith Allen, PHDKansas City, MO1477615698
- Tanda Allen, MSKansas City, MO1427349356
- J Amrod, PH.D.Columbia, MO1437580537
Common questions
What is Sydney K. Greenwalt, PHD's NPI number?
Sydney K. Greenwalt, PHD's National Provider Identifier (NPI) is 1578305223, issued on Jun 12, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Sydney K. Greenwalt, PHD located?
The NPPES record lists a practice address at 1129 Macklind Ave, Saint Louis, MO, 63110. Phone: (314) 289-9411. Providers update this record themselves, so call before visiting.
How can I verify Sydney K. Greenwalt, PHD's license?
NPPES lists Missouri license number 2024019727, as entered by the provider. Search the Missouri board that licenses this profession; the NPPES record confirms identity 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.