NPPES file of Aug 9, 2026

Jon Michael Karch, MD

Hospitalist Physician · Santa Rosa, CA

Jon Michael Karch, MD is a hospitalist physician with a practice address in Santa Rosa, California, and NPI 1710203880, issued on Apr 14, 2010. Check the license (California 1025380, as entered in NPPES) on the Medical Board of California; 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
1710203880
Name
Jon Michael Karch
Credential
MD
Primary taxonomy
Hospitalist Physician 208M00000X
License number
1025380 CA
Self-reported in NPPES; status is on the state search
Practice location
30 Mark West Springs RD, Santa Rosa, CA 95403
Phone
(707) 576-4000
Enumerated
Apr 14, 2010
Record last updated
Mar 4, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(707) 576-4635
Medicare enrollment
Enrolled (PECOS I20150921003306); accepts Medicare assignment
Medical or professional school
Pennsylvania State University College Of Medicine, 2010
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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8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →

Also registered at 30 Mark West Springs RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Lauren Anderson, RNEmergency Registered Nurse1558030361
  2. Mitchell Bailey, M.D.Surgery Physician1366422008
  3. Panathda Bayrasy, PHARMDPharmacotherapy Pharmacist1629559133
  4. Dayle Bondarev, MDNeonatal-Perinatal Medicine Physician1417451352
  5. Jonathan Chung, MDHospitalist Physician1598256414
  6. Cathy Conway, LCSWClinical Social Worker1508505561

Verify Jon Michael Karch in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license 1025380    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
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through 2 group practices

  1. Anesthesia And Analgesia Medical Group IncSanta Rosa, CA
  2. Providence Medical FoundationSanta Rosa, CA

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

Jon Michael Karch among 3,099 hospitalist physician records in California

Jon Michael Karch, MD is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 44% of them.

  • NPI issued2010 · 44% of these records are older, 53% newer
  • In a Medicare fileYes · 90% of these records are
  • In the CMS Doctors and Clinicians fileYes · 81% of these records are
  • Graduated2010 · median 2010 among the 2,505 with a school on file
  • Record last updated2020 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hospitalist Physician providers in California

There are 3,099 hospitalist physician records in California.

All 3,099 in California → Every provider in Santa Rosa → Hospitalist Physician nationwide →

The 8 hospitalist physician records with the nearest ZIP codes

  1. Pankaj Arora, MDSanta Rosa, CA 954031033110044
  2. B. Pamela Burleson, MDSanta Rosa, CA 954031760566830
  3. Frederick Challoner, MDSanta Rosa, CA 954031043394117
  4. Margaret Guo, MDSanta Rosa, CA 954031760566764
  5. Helen Hammer, MDSanta Rosa, CA 954031962586933
  6. Garima Hoffmann, MDSanta Rosa, CA 954031861576837
  7. Vivek Kumra, MDSanta Rosa, CA 954031972687044
  8. Deborah Lawson, MDSanta Rosa, CA 954031548332349

Common questions

What is Jon Michael Karch, MD's NPI number?

Jon Michael Karch, MD's National Provider Identifier (NPI) is 1710203880, issued on Apr 14, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Jon Michael Karch, MD located?

The NPPES record lists a practice address at 30 Mark West Springs RD, Santa Rosa, CA, 95403. Phone: (707) 576-4000. Providers update this record themselves, so call before visiting.

How can I verify Jon Michael Karch, MD's license?

NPPES lists California license number 1025380, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.