Clifford Appel, M.D.
Gastroenterology Physician · Danbury, CT
Clifford Appel, M.D. is a gastroenterology physician with a practice address in Danbury, Connecticut, and NPI 1366436065, issued on Sep 8, 2005. Check the license (Connecticut 27415, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Clifford Appel
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 27415 CT
Self-reported in NPPES; status is on the state search - Practice location
- 111 Osborne St, Danbury, CT 06810
- Phone
- (203) 739-7038
- Enumerated
- Sep 8, 2005
- Record last updated
- Aug 6, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 001274159 CT
- Medicare enrollment
- Enrolled (PECOS I20110416000002); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 1980
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 336 in Connecticut → Look up another NPI →
Also registered at 111 Osborne St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Neesha Bastien, PA-CPhysician Assistant1487068482
- Steven Brandwein, M.D.Gastroenterology Physician1174542450
- Jason Costa, M.D.Cardiovascular Disease Physician1588007645
- Charlene Deluca, MS, RD, CDNRegistered Dietitian1285226282
- Cynthia Fiore, PAPhysician Assistant1467051920
- Royd Fukumoto, M.D.Surgery Physician1902071988
Verify Clifford Appel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 27415Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average gastroenterology physician in 2024
680 Medicare Part D claims for 259 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Pantoprazole Sodium184 claims
- Famotidine93 claims
- Gavilyte-C53 claims
- Dicyclomine Hcl45 claims
- Sod Sulf-Potass Sulf-Mag Sulf38 claims
- Omeprazole37 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.
The MIPS final score for 2023 (Medicare payment program): 94.2 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Nuvance Health Medical Practice CT IncDanbury, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Clifford Appel among 336 gastroenterology physician records in Connecticut
Clifford Appel, M.D. is one of 336 gastroenterology physician records with a practice address in Connecticut. 86% 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, 85% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated1980 · median 2001 among the 255 with a school on file
- Record last updated2013 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Connecticut
There are 336 gastroenterology physician records in Connecticut.
All 336 in Connecticut → Every provider in Danbury → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- David Barenberg, M.D.Danbury, CT 068101548297633
- Steven Brandwein, M.D.Danbury, CT 068101174542450
- Tyson Collazo, M.D.Danbury, CT 068101801195565
- Scott Estabrook, M.D.Danbury, CT 068101225053051
- Joseph Fiorito, M.D.Danbury, CT 068101730108010
- Gerald Franklin, MDDanbury, CT 068101184658528
- Steven Gorelick, M.D.Danbury, CT 068101972555183
- Adam Gorelick, M.D.Danbury, CT 068101356482251
Common questions
What is Clifford Appel, M.D.'s NPI number?
Clifford Appel, M.D.'s National Provider Identifier (NPI) is 1366436065, issued on Sep 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Clifford Appel, M.D. located?
The NPPES record lists a practice address at 111 Osborne St, Danbury, CT, 06810. Phone: (203) 739-7038. Providers update this record themselves, so call before visiting.
How can I verify Clifford Appel, M.D.'s license?
NPPES lists Connecticut license number 27415, 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 Clifford Appel, M.D. prescribe under Medicare Part D?
In 2024, Clifford Appel, M.D. had 680 Medicare Part D claims for 259 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Clifford Appel, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.2 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.