Walter L. Ferguson, M.D.
Internal Medicine Physician · Tuxedo Park, NY
Walter L. Ferguson, M.D. is an internal medicine physician with a practice address in Tuxedo Park, New York, and NPI 1235278128, issued on Feb 6, 2007. Check the license (New York 164524-1, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Walter L. Ferguson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 164524-1 NY
25MA08876800 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 40 Kings Dr, Tuxedo Park, NY 10987
- Phone
- (718) 560-6912
- Enumerated
- Feb 6, 2007
- Record last updated
- Feb 23, 2022
- Fax
- (845) 744-9107
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 12,067 in New York → Look up another NPI →
Also registered at 40 Kings Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Garrett Lasalle, M.D.Interventional Pain Medicine Physician1922114578
Verify Walter L. Ferguson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 164524-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average internal medicine physician in 2024
879 Medicare Part D claims for 43 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Rosuvastatin Calcium69 claims
- Atorvastatin Calcium60 claims
- Losartan Potassium49 claims
- Metoprolol Succinate48 claims
- Eliquis38 claims
- Pantoprazole Sodium32 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.
Walter L. Ferguson among 12,067 internal medicine physician records in New York
Walter L. Ferguson, M.D. is one of 12,067 internal medicine physician records with a practice address in New York. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 47% of them.
- NPI issued2007 · 47% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2022 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 internal medicine physician records list a practice address in Tuxedo Park
They are 2 of the 24 NPPES records with a practice address in Tuxedo Park, and 12,067 internal medicine physician records in New York.
All 12,067 in New York → Every provider in Tuxedo Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Rose Gazin, MDTuxedo Park, NY 109871659993558
- Sheryl Leventhal, M.D.Valley Cottage, NY 109891861671026
- Ralph Alvarez, MDWarwick, NY 109901346368370
- Anthony Martini, MDWarwick, NY 109901912986456
- Patricia Rossi, M.D.Warwick, NY 109901497759997
- Mayank Shah, MDWarwick, NY 109901598872616
- Gurpreet Singh, MDWarwick, NY 109901831477694
- Shuangping Wang, M.D.Warwick, NY 109901326121070
Common questions
What is Walter L. Ferguson, M.D.'s NPI number?
Walter L. Ferguson, M.D.'s National Provider Identifier (NPI) is 1235278128, issued on Feb 6, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Walter L. Ferguson, M.D. located?
The NPPES record lists a practice address at 40 Kings Dr, Tuxedo Park, NY, 10987. Phone: (718) 560-6912. Providers update this record themselves, so call before visiting.
How can I verify Walter L. Ferguson, M.D.'s license?
NPPES lists New York license number 164524-1, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Walter L. Ferguson, M.D. prescribe under Medicare Part D?
In 2024, Walter L. Ferguson, M.D. had 879 Medicare Part D claims for 43 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.