John Karstens
Sleep Medicine (Internal Medicine) Physician · Erie, PA
John Karstens is a sleep medicine (internal medicine) physician with a practice address in Erie, Pennsylvania, and NPI 1457938169, issued on Mar 27, 2021. Check the license (Pennsylvania OS023662, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- John Karstens
- Primary taxonomy
- Sleep Medicine (Internal Medicine) Physician 207RS0012X
- License number
- OS023662 PA
Self-reported in NPPES; status is on the state search - Practice location
- 204 W 26TH St, Erie, PA 16508
- Phone
- (814) 868-7581
- Enumerated
- Mar 27, 2021
- Record last updated
- Aug 22, 2025
- Fax
- (814) 866-3580
- Medicare enrollment
- Enrolled (PECOS I20250829001657); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest sleep medicine (internal medicine) physician records → All 58 in Pennsylvania → Look up another NPI →
Also registered at 204 W 26TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan AllenNurse Practitioner1730927518
- Abasin Amanzai, MDPulmonary Disease Physician1922560119
- Briana Antalek, CRNPFamily Nurse Practitioner1922615046
- Breanna Burdick, PA-CPhysician Assistant1730559253
- Sean DentAcute Care Nurse Practitioner1194165894
- Melissa Doughty, AGACNPNurse Practitioner1346912433
Verify John Karstens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS023662Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average sleep medicine (internal medicine) physician in 2024
19 Medicare Part D claims, against an average of 585 among the 852 providers of this specialty who prescribed in Part D.
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
- St Vincent Medical Education And Research Institute IncErie, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Karstens among 58 sleep medicine (internal medicine) physician records in Pennsylvania
John Karstens is one of 58 sleep medicine (internal medicine) physician records with a practice address in Pennsylvania. 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 2021, is newer than 95% of them.
- NPI issued2021 · 95% of these records are older, 3% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2021 · median 2004 among the 43 with a school on file
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RS0012X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sleep Medicine (Internal Medicine) Physician providers in Pennsylvania
There are 58 sleep medicine (internal medicine) physician records in Pennsylvania.
All 58 in Pennsylvania → Every provider in Erie → Sleep Medicine (Internal Medicine) Physician nationwide →
The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes
- Molly Herring, DOPort Matilda, PA 168701376934364
- Pratima Behari, MDCamp Hill, PA 170111588725865
- Kevin Branch, MDHarrisburg, PA 171091437539475
- Asad KhanLatrobe, PA 156501396033403
- Vasudev Daliparty, MDYork, PA 174021831728773
- Sangeeta Chakravorty, MDPittsburgh, PA 152401710959671
- Priya Borker, MDPittsburgh, PA 152131356753891
- Sullafa Kadura, M.D.Pittsburgh, PA 152131720303118
Common questions
What is John Karstens's NPI number?
John Karstens's National Provider Identifier (NPI) is 1457938169, issued on Mar 27, 2021. An NPI identifies a provider in billing; it is not a license.
Where is John Karstens located?
The NPPES record lists a practice address at 204 W 26TH St, Erie, PA, 16508. Phone: (814) 868-7581. Providers update this record themselves, so call before visiting.
How can I verify John Karstens's license?
NPPES lists Pennsylvania license number OS023662, 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 Karstens prescribe under Medicare Part D?
In 2024, John Karstens had 19 Medicare Part D claims; the average among sleep medicine (internal medicine) physician prescribers was 585. 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.