NPPES file of Aug 9, 2026

Jonathan Carl Karsten, PA

Medical Physician Assistant · Denver, CO

Jonathan Carl Karsten, PA is a medical physician assistant with a practice address in Denver, Colorado, and NPI 1639187966, issued on Aug 3, 2006. Check the license (Colorado 2006, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639187966
Name
Jonathan Carl Karsten
Credential
PA
Primary taxonomy
Medical Physician Assistant 363AM0700X
License number
2006 CO
Self-reported in NPPES; status is on the state search
Practice location
8451 Pearl Street, Denver, CO 80229
Phone
(303) 422-7991
Enumerated
Aug 3, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(303) 422-7994
Medicaid ID
46201335 CO
Medicare enrollment
Enrolled (PECOS I20050315001104); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Jonathan Carl Karsten in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license 2006
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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Bills Medicare through one group practice

  1. Magnolia Medical CompanyDenver, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jonathan Carl Karsten among 1,308 medical physician assistant records in Colorado

Jonathan Carl Karsten, PA is one of 1,308 medical physician assistant records with a practice address in Colorado. 72% 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 3% of them.

  • NPI issued2006 · 3% of these records are older, 79% newer
  • In a Medicare fileYes · 72% of these records are
  • In the CMS Doctors and Clinicians fileYes · 56% of these records are
  • Graduated2004 · median 2014 among the 727 with a school on file
  • Record last updated2007 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Medical Physician Assistant providers in Colorado

There are 1,308 medical physician assistant records in Colorado.

The 8 medical physician assistant records with the nearest ZIP codes

  1. Milena Beer, PA-CThornton, CO 802291457464950
  2. Jena Cella, PAThornton, CO 802291730597220
  3. Kaitlin Ehrlich, PAThornton, CO 802291013317965
  4. Sarah Fredrickson, P.A.Thornton, CO 802291639543028
  5. Kriste Hardt, PA-CThornton, CO 802291427200914
  6. Logan Jennings, PA-CThornton, CO 802291164807327
  7. Rachel Spady, PA-CThornton, CO 802291720481120
  8. Kiva Stiff, PA-CThornton, CO 802291902856180

Common questions

What is Jonathan Carl Karsten, PA's NPI number?

Jonathan Carl Karsten, PA's National Provider Identifier (NPI) is 1639187966, issued on Aug 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Jonathan Carl Karsten, PA located?

The NPPES record lists a practice address at 8451 Pearl Street, Denver, CO, 80229. Phone: (303) 422-7991. Providers update this record themselves, so call before visiting.

How can I verify Jonathan Carl Karsten, PA's license?

NPPES lists Colorado license number 2006, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity 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.