Warren J. Ferguson, M.D.
Family Medicine Physician · Worcester, MA
Warren J. Ferguson, M.D. is a family medicine physician with a practice address in Worcester, Massachusetts, and NPI 1447312798, issued on Dec 14, 2006. Check the license (Massachusetts 52509, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Warren J. Ferguson
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 52509 MA
Self-reported in NPPES; status is on the state search - Practice location
- 26 Queen St, Worcester, MA 01610
- Phone
- (508) 860-7700
- Enumerated
- Dec 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 26 Queen St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Abraham, M.D.Family Medicine Physician1689037673
- Albertha Adwetewa-Badu, FNP-BC, FNP-CFamily Nurse Practitioner1427238260
- Hiyam Ahmed, MBBSStudent in an Organized Health Care Education/Training Program1669266300
- Ime Akpan-MahoneyRegistered Nurse1952732547
- Benjamin Alfred, NPPrimary Care Nurse Practitioner1366778953
- Bronwyn Alfred, FNPFamily Nurse Practitioner1164843843
Verify Warren J. Ferguson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 52509Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
41 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Tamsulosin Hcl13 claims
- Trospium Chloride Er13 claims
- Albuterol Sulfate Hfa11 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.
Warren J. Ferguson among 2,265 family medicine physician records in Massachusetts
Warren J. Ferguson, M.D. is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 55% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 68% of these records are
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
168 family medicine physician records list a practice address in Worcester
They are 168 of the 13,166 NPPES records with a practice address in Worcester, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Worcester → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Philip Bolduc, MDWorcester, MA 016101669460051
- Lucy Candib, MDWorcester, MA 016101093726382
- Lisa Carter, FAMILY PRACTICEWorcester, MA 016101972514180
- Penelope Dillon, FNP-C ,PSYCH NP-C, CWorcester, MA 016101558393330
- Lisa Gussak, M.D.Worcester, MA 016101780667543
- Quang Le, M.D.Worcester, MA 016101578665998
- Valerie Pietry, FAMILY PRACTICEWorcester, MA 016101356352439
- David Rosenfield, MDWorcester, MA 016101467562256
Common questions
What is Warren J. Ferguson, M.D.'s NPI number?
Warren J. Ferguson, M.D.'s National Provider Identifier (NPI) is 1447312798, issued on Dec 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Warren J. Ferguson, M.D. located?
The NPPES record lists a practice address at 26 Queen St, Worcester, MA, 01610. Phone: (508) 860-7700. Providers update this record themselves, so call before visiting.
How can I verify Warren J. Ferguson, M.D.'s license?
NPPES lists Massachusetts license number 52509, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Warren J. Ferguson, M.D. prescribe under Medicare Part D?
In 2024, Warren J. Ferguson, M.D. had 41 Medicare Part D claims; the average among family medicine physician prescribers was 3,544. 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.