William M. Demarchi, MD
Internal Medicine Physician · Boca Raton, FL
William M. Demarchi, MD is an internal medicine physician with a practice address in Boca Raton, Florida, and NPI 1659353100, issued on Nov 18, 2005. Check the license (Florida ME73867, as entered in NPPES) on the Florida health license search; the Medicare figures below come from public CMS files.
- Name
- William M. Demarchi
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- ME73867 FL
ME0073867 FL
Self-reported in NPPES; status is on the state search - Practice location
- 9878 Clint Moore Road, Boca Raton, FL 33496
- Phone
- (561) 451-2454
- Enumerated
- Nov 18, 2005
- Record last updated
- Aug 24, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (561) 451-1223
- Medicare enrollment
- Enrolled (PECOS I20050813000004); may accept Medicare assignment
- Medical or professional school
- New York Medical College, 1995
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 10,151 in Florida → Look up another NPI →
Verify William M. Demarchi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersFlorida health license search
Search for license ME73867Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10.0 times the Medicare Part D claims of the average internal medicine physician in 2024
31,909 Medicare Part D claims for 1,354 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims. 169 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,649 claims
- Eliquis1,571 claims
- Amlodipine Besylate1,117 claims
- Gabapentin963 claims
- Furosemide915 claims
- Levothyroxine Sodium915 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: $103.83
3 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Post Acute Clinical Services PLLCCharlotte, NC
- SG Medical Professional PCBoca Raton, FL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William M. Demarchi among 10,151 internal medicine physician records in Florida
William M. Demarchi, MD is one of 10,151 internal medicine physician records with a practice address in Florida. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 90% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1995 · median 2004 among the 6,606 with a school on file
- Record last updated2011 · 48% 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 Florida practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
206 internal medicine physician records list a practice address in Boca Raton
They are 206 of the 6,189 NPPES records with a practice address in Boca Raton, and 10,151 internal medicine physician records in Florida.
All 10,151 in Florida → Every provider in Boca Raton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mark Cukierman, M.D.Boca Raton, FL 334961326043258
- Mark Friedman, MDBoca Raton, FL 334961235109521
- Charles Gelfman, MDBoca Raton, FL 334961720010911
- Robert Goldstein, M.D.Boca Raton, FL 334961366414674
- Brian Kaplan, MDBoca Raton, FL 334961831174242
- Stewart Kaskel, M.D.Boca Raton, FL 334961588684591
- Seba Krumholtz, MDBoca Raton, FL 334961669442968
- Felice Levine, MDBoca Raton, FL 334961861447591
Common questions
What is William M. Demarchi, MD's NPI number?
William M. Demarchi, MD's National Provider Identifier (NPI) is 1659353100, issued on Nov 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William M. Demarchi, MD located?
The NPPES record lists a practice address at 9878 Clint Moore Road, Boca Raton, FL, 33496. Phone: (561) 451-2454. Providers update this record themselves, so call before visiting.
How can I verify William M. Demarchi, MD's license?
NPPES lists Florida license number ME73867, as entered by the provider. Search the Florida health license search at https://mqa-internet.doh.state.fl.us/mqasearchservices/healthcareproviders. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William M. Demarchi, MD prescribe under Medicare Part D?
In 2024, William M. Demarchi, MD had 31,909 Medicare Part D claims for 1,354 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.