Felix Robert Szabo, M.D.
Internal Medicine Physician · Worcester, MA
Felix Robert Szabo, M.D. is an internal medicine physician with a practice address in Worcester, Massachusetts, and NPI 1669714051, issued on Mar 23, 2013. Check the license (Massachusetts 268558, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Felix Robert Szabo
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 268558 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (508) 334-8515
- Enumerated
- Mar 23, 2013
- Record last updated
- Oct 24, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (508) 334-6490
- Medicare enrollment
- Enrolled (PECOS I20161010001544); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nawal Aamir, MDInternal Medicine Physician1588248926
- Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
- Paula Abate, NPNurse Practitioner1336265909
- Aly AbayazeedDiagnostic Radiology Physician1821221946
- Zainab AbbasDermatology Physician1609028000
- Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417
Verify Felix Robert Szabo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 268558Check 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 2 group practices
- Emerson Practice Associates, IncConcord, MA
- Lawrence General HospitalLawrence, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Felix Robert Szabo among 6,825 internal medicine physician records in Massachusetts
Felix Robert Szabo, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 70% of them.
- NPI issued2013 · 70% of these records are older, 28% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2003 · median 2004 among the 4,103 with a school on file
- Record last updated2017 · 64% 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 Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
448 internal medicine physician records list a practice address in Worcester
They are 448 of the 13,166 NPPES records with a practice address in Worcester, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Worcester → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Abigail Adams, M.D.Worcester, MA 016551497745806
- Eric Alper, M.D.Worcester, MA 016551275524340
- Nidhi Chojar, M.D.Worcester, MA 016551023009636
- Kimberly Eisenstock, M.D.Worcester, MA 016551194706069
- George Eypper, M.D.Worcester, MA 016551104817451
- Melissa Fischer, M.D.Worcester, MA 016551306837653
- Ish Gupta, D.O.Worcester, MA 016551598747834
- Andrew Karson, MDWorcester, MA 016551194706002
Common questions
What is Felix Robert Szabo, M.D.'s NPI number?
Felix Robert Szabo, M.D.'s National Provider Identifier (NPI) is 1669714051, issued on Mar 23, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Felix Robert Szabo, M.D. located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (508) 334-8515. Providers update this record themselves, so call before visiting.
How can I verify Felix Robert Szabo, M.D.'s license?
NPPES lists Massachusetts license number 268558, 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.
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.