John Showalter, M.D.
Internal Medicine Physician · Danville, PA
John Showalter, M.D. is an internal medicine physician with a practice address in Danville, Pennsylvania, and NPI 1609082064, issued on May 15, 2007. Check the license (Pennsylvania MD435403, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- John Showalter
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD435403 PA
21686 MS
Self-reported in NPPES; status is on the state search - Practice location
- 1238 Bloom RD, Danville, PA 17821
- Phone
- (570) 284-7405
- Enumerated
- May 15, 2007
- Record last updated
- Aug 7, 2024
- Fax
- (833) 974-3566
- Medicaid IDs
- 1022785250001 PA
09889291 MS - Medicare enrollment
- Enrolled (PECOS I20240219000130); accepts Medicare assignment
- Medical or professional school
- Pennsylvania State University College Of Medicine, 2009
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Verify John Showalter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD435403Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
38 Medicare Part D claims, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of 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.
Bills Medicare through one group practice
- Phoenix Rehabilitation And Health Services IncCranberry Township, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Showalter among 7,300 internal medicine physician records in Pennsylvania
John Showalter, 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 2007, is newer than 36% of them.
- NPI issued2007 · 36% of these records are older, 57% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2009 · median 2008 among the 4,208 with a school on file
- Record last updated2024 · 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).
110 internal medicine physician records list a practice address in Danville
They are 110 of the 3,116 NPPES records with a practice address in Danville, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in Danville → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Houssam Abdul-Al, M.D.Danville, PA 178211316916208
- Jonathan Amora, DODanville, PA 178211790589166
- Adrienne Apatoczky, D.O.Danville, PA 178211215088117
- Nicholas Baker, MDDanville, PA 178211942003124
- Charles Baumgart, M.D.Danville, PA 178211548529076
- Michael Brogna, M.D.Danville, PA 178211053341537
- Caroline FerrellDanville, PA 178211932903127
- Matthew KostelacDanville, PA 178211871397075
Common questions
What is John Showalter, M.D.'s NPI number?
John Showalter, M.D.'s National Provider Identifier (NPI) is 1609082064, issued on May 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Showalter, M.D. located?
The NPPES record lists a practice address at 1238 Bloom RD, Danville, PA, 17821. Phone: (570) 284-7405. Providers update this record themselves, so call before visiting.
How can I verify John Showalter, M.D.'s license?
NPPES lists Pennsylvania license number MD435403, 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 John Showalter, M.D. prescribe under Medicare Part D?
In 2024, John Showalter, M.D. had 38 Medicare Part D claims; 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.