Sergio D. Fefer, M.D.
Specialist · South Weymouth, MA
Sergio D. Fefer, M.D. is a specialist with a practice address in South Weymouth, Massachusetts, and NPI 1053343574, issued on Jul 7, 2006. Check the license (Massachusetts 228965, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Sergio D. Fefer
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- 228965 MA
Self-reported in NPPES; status is on the state search - Practice location
- 780 Main St, South Weymouth, MA 02190
- Phone
- (781) 331-4600
- Enumerated
- Jul 7, 2006
- Record last updated
- Jan 4, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (781) 337-5095
- Medicaid ID
- 2123177 MA
- Medicare enrollment
- Enrolled (PECOS I20060914000124); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest specialist records → All 1,096 in Massachusetts → Look up another NPI →
Also registered at 780 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jeffrey Bennett, MDSpecialist1811987837
- Denis Blais, MDSpecialist1245229335
- Kurtus Dafford, M.D.Neurological Surgery Physician1093984742
- John Feldman, MDSpecialist1194715110
- Ralph Froio, MDSurgery Physician1538151527
- William Helfrich, MDSpecialist1124017207
Verify Sergio D. Fefer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license 228965Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% fewer Medicare Part D claims than the average specialist in 2024
1,365 Medicare Part D claims for 400 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 58 claims were for opioids.
Most prescribed
- Tamsulosin Hcl376 claims
- Finasteride200 claims
- Ciprofloxacin Hcl94 claims
- Sulfamethoxazole-Trimethoprim92 claims
- Oxybutynin Chloride Er79 claims
- Gemtesa57 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.
Industry payments in 2024: $23.80
1 payment: food and beverage; the largest payer was Coloplast Corp. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Coastal Medical AssociatesWeymouth, MA
- South Shore Medical Center, Inc.Weymouth, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sergio D. Fefer among 1,096 specialist records in Massachusetts
Sergio D. Fefer, M.D. is one of 1,096 specialist records with a practice address in Massachusetts. 15% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 69% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileYes · 12% of these records are
- Graduated1991 · median 1989 among the 128 with a school on file
- Record last updated2016 · 82% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
14 specialist records list a practice address in South Weymouth
They are 14 of the 445 NPPES records with a practice address in South Weymouth, and 1,096 specialist records in Massachusetts.
All 1,096 in Massachusetts → Every provider in South Weymouth → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Jeffrey Bennett, MDSouth Weymouth, MA 021901811987837
- Stacy Bierly, MSPTSouth Weymouth, MA 021901043224967
- Denis Blais, MDSouth Weymouth, MA 021901245229335
- George Cuchural, M.D.South Weymouth, MA 021901124137484
- John Feldman, MDSouth Weymouth, MA 021901194715110
- William Helfrich, MDSouth Weymouth, MA 021901124017207
- Young Kim, MDSouth Weymouth, MA 021901235240219
- Lawrence KullaSouth Weymouth, MA 021901952365264
Common questions
What is Sergio D. Fefer, M.D.'s NPI number?
Sergio D. Fefer, M.D.'s National Provider Identifier (NPI) is 1053343574, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Sergio D. Fefer, M.D. located?
The NPPES record lists a practice address at 780 Main St, South Weymouth, MA, 02190. Phone: (781) 331-4600. Providers update this record themselves, so call before visiting.
How can I verify Sergio D. Fefer, M.D.'s license?
NPPES lists Massachusetts license number 228965, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Sergio D. Fefer, M.D. prescribe under Medicare Part D?
In 2024, Sergio D. Fefer, M.D. had 1,365 Medicare Part D claims for 400 beneficiaries; the average among specialist prescribers was 1,380. 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.