Jonathan William Seiferth, MD
Family Medicine Physician · Williamsport, PA
Jonathan William Seiferth, MD is a family medicine physician with a practice address in Williamsport, Pennsylvania, and NPI 1386224384, issued on Apr 13, 2021. Check the license (Pennsylvania MD485993, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Jonathan William Seiferth
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD485993 PA
Self-reported in NPPES; status is on the state search - Practice location
- 740 High St Ste 4001, Williamsport, PA 17701
- Phone
- (570) 321-2345
- Enumerated
- Apr 13, 2021
- Record last updated
- Sep 4, 2025
- Medicare enrollment
- Enrolled (PECOS I20240910004944); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 7,483 in Pennsylvania → Look up another NPI →
Also registered at 740 High St Ste 4001
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Jonathan William Seiferth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD485993Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average family medicine physician in 2024
532 Medicare Part D claims for 195 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Gabapentin32 claims
- Atorvastatin Calcium19 claims
- Fluticasone Propionate19 claims
- Duloxetine Hcl18 claims
- Amitriptyline Hcl16 claims
- Lorazepam16 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: $16.33
1 payment: food and beverage; the largest payer was Amgen Inc. The 55,478 providers of this specialty with any payment received $902.55 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
- Phoenix Rehabilitation And Health Services IncCranberry Twp, PA
- Susquehanna Physician ServicesLock Haven, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan William Seiferth among 7,483 family medicine physician records in Pennsylvania
Jonathan William Seiferth, MD is one of 7,483 family medicine physician records with a practice address in Pennsylvania. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 86% of them.
- NPI issued2021 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 61% of these records are
- Graduated2021 · median 2005 among the 4,529 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
60 family medicine physician records list a practice address in Williamsport
They are 60 of the 1,371 NPPES records with a practice address in Williamsport, and 7,483 family medicine physician records in Pennsylvania.
All 7,483 in Pennsylvania → Every provider in Williamsport → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- David Ambrose, MDWilliamsport, PA 177011497723936
- Elizabeth Anderson, MDWilliamsport, PA 177011427026970
- John Boll, D.O.Williamsport, PA 177011073516944
- Mona Chang, MDWilliamsport, PA 177011639159825
- Kenneth Durrwachter, MDWilliamsport, PA 177011992702682
- F Funk, MDWilliamsport, PA 177011548261126
- Andrew Haussmann, MDWilliamsport, PA 177011174583314
- Timothy HeilmannWilliamsport, PA 177011912968827
Common questions
What is Jonathan William Seiferth, MD's NPI number?
Jonathan William Seiferth, MD's National Provider Identifier (NPI) is 1386224384, issued on Apr 13, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan William Seiferth, MD located?
The NPPES record lists a practice address at 740 High St Ste 4001, Williamsport, PA, 17701. Phone: (570) 321-2345. Providers update this record themselves, so call before visiting.
How can I verify Jonathan William Seiferth, MD's license?
NPPES lists Pennsylvania license number MD485993, 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 Jonathan William Seiferth, MD prescribe under Medicare Part D?
In 2024, Jonathan William Seiferth, MD had 532 Medicare Part D claims for 195 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.