William B. Fitzgerald, M.D.
Critical Care Medicine (Internal Medicine) Physician · Bridgeport, CT
William B. Fitzgerald, M.D. is a critical care medicine (internal medicine) physician with a practice address in Bridgeport, Connecticut, and NPI 1356485999, issued on Feb 16, 2007. Check the license (Connecticut 027535, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William B. Fitzgerald
- Credential
- M.D.
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- 027535 CT
Self-reported in NPPES; status is on the state search - Practice location
- 3180 Main St, Bridgeport, CT 06606
- Phone
- (203) 371-5400
- Enumerated
- Feb 16, 2007
- Record last updated
- Jun 12, 2009 (not updated in 17 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110630000046); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 40 in Connecticut → Look up another NPI →
Also registered at 3180 Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nalini Anand, M.D.Internal Medicine Physician1649218363
- Jeimy Canosa, P.T.Physical Therapist1477838951
- Sarah Coppola, DPTPhysical Therapist1083457568
- Arcangelo Distefano, MDGeriatric Medicine (Internal Medicine) Physician1902869415
- Sarah Donahue, APRNPediatric Nurse Practitioner1528055894
- Jessica DubretBehavior Analyst1881460038
Verify William B. Fitzgerald in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 027535Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.0 times the Medicare Part D claims of the average critical care medicine (internal medicine) physician in 2024
2,767 Medicare Part D claims for 234 beneficiaries, against an average of 696 among the 2,873 providers of this specialty who prescribed in Part D. Brand-name drugs were 23% of claims. 35 claims were for opioids.
Most prescribed
- Amlodipine Besylate168 claims
- Atorvastatin Calcium164 claims
- Albuterol Sulfate Hfa151 claims
- Trelegy Ellipta121 claims
- Hydrochlorothiazide89 claims
- Lisinopril78 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: $52.69
3 payments; by number, the most common kind was food and beverage; the largest payer was Baxter Healthcare. The 2,708 providers of this specialty with any payment received $2,958.68 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.
William B. Fitzgerald among 40 critical care medicine (internal medicine) physician records in Connecticut
William B. Fitzgerald, M.D. is one of 40 critical care medicine (internal medicine) physician records with a practice address in Connecticut. 90% 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 35% of them.
- NPI issued2007 · 35% of these records are older, 48% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 88% of these records are
- Graduated1981 · median 2004 among the 35 with a school on file
- Record last updated2009 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0200X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in Connecticut
There are 40 critical care medicine (internal medicine) physician records in Connecticut.
All 40 in Connecticut → Every provider in Bridgeport → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Robbert Crusio, MDBridgeport, CT 066061316132962
- Alexander Fleming-NouriBridgeport, CT 066061083279954
- Zaffar Haque, M.D.Bridgeport, CT 066061912059502
- Yanxi Jiang-NastBridgeport, CT 066061649899170
- Ishan Malhotra, M.B.B.S.Bridgeport, CT 066061083960934
- Tracey O'Brien, MDBridgeport, CT 066061467914630
- David Kaufman, MDBridgeport, CT 066101629000849
- Sandra Patrucco Reyes, MDBridgeport, CT 066101336644715
Common questions
What is William B. Fitzgerald, M.D.'s NPI number?
William B. Fitzgerald, M.D.'s National Provider Identifier (NPI) is 1356485999, issued on Feb 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William B. Fitzgerald, M.D. located?
The NPPES record lists a practice address at 3180 Main St, Bridgeport, CT, 06606. Phone: (203) 371-5400. Providers update this record themselves, so call before visiting.
How can I verify William B. Fitzgerald, M.D.'s license?
NPPES lists Connecticut license number 027535, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William B. Fitzgerald, M.D. prescribe under Medicare Part D?
In 2024, William B. Fitzgerald, M.D. had 2,767 Medicare Part D claims for 234 beneficiaries; the average among critical care medicine (internal medicine) physician prescribers was 696. 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.