Frederick Y. Yap, M.D.
Geriatric Medicine (Internal Medicine) Physician · Saint Louis, MO
Frederick Y. Yap, M.D. is a geriatric medicine (internal medicine) physician with a practice address in Saint Louis, Missouri, and NPI 1780601732, issued on Jul 16, 2006. Check the license (Missouri MO106411, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Frederick Y. Yap
- Credential
- M.D.
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- MO106411 MO
Self-reported in NPPES; status is on the state search - Practice location
- 1 Jefferson Barracks Dr Bldg 55, Saint Louis, MO 63125
- Phone
- (314) 845-5054
- Enumerated
- Jul 16, 2006
- Record last updated
- May 13, 2024
- Medicaid ID
- 208948414 MO
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 75 in Missouri → Look up another NPI →
Also registered at 1 Jefferson Barracks Dr Bldg 55
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rajyalakshmi Gadi, MDNephrology Physician1245454495
- Poonam Jain, M.D.Geriatric Medicine (Internal Medicine) Physician1851446207
- Annette Miller, COMS, CLVTOrientation and Mobility Training Rehabilitation Counselor1841070315
- Rosa Prouhet, CNPPrimary Care Nurse Practitioner1578629945
- Amanda Schoeck, MSWClinical Social Worker1699009357
- Sarah Smith, FNP-BCFamily Nurse Practitioner1598106866
Verify Frederick Y. Yap 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 MO106411Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
122 Medicare Part D claims for 12 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D.
Most prescribed
- Pregabalin11 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.
Frederick Y. Yap among 75 geriatric medicine (internal medicine) physician records in Missouri
Frederick Y. Yap, M.D. is one of 75 geriatric medicine (internal medicine) physician records with a practice address in Missouri. 72% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 40% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileNo · 45% of these records are
- Record last updated2024 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Missouri
There are 75 geriatric medicine (internal medicine) physician records in Missouri.
All 75 in Missouri → Every provider in Saint Louis → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Riffat Imdad, M.D.Saint Louis, MO 631251760477426
- Poonam Jain, M.D.Saint Louis, MO 631251851446207
- Mark Gunby, DOSaint Louis, MO 631271699886309
- Iqbal Amin, M.D.Saint Louis, MO 631281184619835
- Bruce Lowrie, MDSaint Louis, MO 631221457367278
- Mohammed Mojid, M.D.Saint Louis, MO 631281548255201
- Richard White, M.D.Saint Louis, MO 631321134417991
- Edward Heidbrier, MD PCSaint Louis, MO 631171154373124
Common questions
What is Frederick Y. Yap, M.D.'s NPI number?
Frederick Y. Yap, M.D.'s National Provider Identifier (NPI) is 1780601732, issued on Jul 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Frederick Y. Yap, M.D. located?
The NPPES record lists a practice address at 1 Jefferson Barracks Dr Bldg 55, Saint Louis, MO, 63125. Phone: (314) 845-5054. Providers update this record themselves, so call before visiting.
How can I verify Frederick Y. Yap, M.D.'s license?
NPPES lists Missouri license number MO106411, 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.
How much does Frederick Y. Yap, M.D. prescribe under Medicare Part D?
In 2024, Frederick Y. Yap, M.D. had 122 Medicare Part D claims for 12 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.