Dennis Demby, M.D.
Internal Medicine Physician · Butler, PA
Dennis Demby, M.D. is an internal medicine physician with a practice address in Butler, Pennsylvania, and NPI 1780612523, issued on Jun 29, 2006. Check the license (Pennsylvania MD023705E, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Dennis Demby
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD023705E PA
Self-reported in NPPES; status is on the state search - Practice location
- 1022B N Main St, Butler, PA 16001
- Phone
- (724) 284-4185
- Enumerated
- Jun 29, 2006
- Record last updated
- Jul 11, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100423000254); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 1022B N Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Donald Halpin, P.A.Physician Assistant1740218049
- Jennifer Lazor, P.A.Physician Assistant1588692768
- Kevin Leighton, M.D.Family Medicine Physician1568490860
- Hugh Shearer, D.O.Family Medicine Physician1316974579
Verify Dennis Demby in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD023705ECheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average internal medicine physician in 2024
7,257 Medicare Part D claims for 476 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 186 claims were for opioids.
Most prescribed
- Atorvastatin Calcium453 claims
- Lisinopril350 claims
- Levothyroxine Sodium308 claims
- Simvastatin282 claims
- Pantoprazole Sodium281 claims
- Amlodipine Besylate276 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: $786.65
44 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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
- Butler Medical ProvidersButler, PA
- Keystone Rehabilitation Systems IncSeven Fields, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis Demby among 7,300 internal medicine physician records in Pennsylvania
Dennis Demby, M.D. is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 64% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1981 · median 2008 among the 4,208 with a school on file
- Record last updated2008 · 56% 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 Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
43 internal medicine physician records list a practice address in Butler
They are 43 of the 1,139 NPPES records with a practice address in Butler, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Butler → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Weien Agate, M.D.Butler, PA 160011982670691
- Fozia Chatta, M.D.Butler, PA 160011659309953
- Padmarao Jevaji, MD, MMPHButler, PA 160011609807296
- Lillian Jordan, MDButler, PA 160011235154295
- James Mathews, DOButler, PA 160011477523140
- Varsha Mehta, M.D.Butler, PA 160011760413108
- John Reefer, M.D.Butler, PA 160011093743304
- John Rocchi, MDButler, PA 160011306837091
Common questions
What is Dennis Demby, M.D.'s NPI number?
Dennis Demby, M.D.'s National Provider Identifier (NPI) is 1780612523, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis Demby, M.D. located?
The NPPES record lists a practice address at 1022B N Main St, Butler, PA, 16001. Phone: (724) 284-4185. Providers update this record themselves, so call before visiting.
How can I verify Dennis Demby, M.D.'s license?
NPPES lists Pennsylvania license number MD023705E, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Dennis Demby, M.D. prescribe under Medicare Part D?
In 2024, Dennis Demby, M.D. had 7,257 Medicare Part D claims for 476 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.