Thomas C. Kreck, MD
Critical Care Medicine (Internal Medicine) Physician · Clearlake, CA
Thomas C. Kreck, MD is a critical care medicine (internal medicine) physician with a practice address in Clearlake, California, and NPI 1457439200, issued on Nov 1, 2006. Check the license (California G86118, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas C. Kreck
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- G86118 CA
Self-reported in NPPES; status is on the state search - Practice location
- 15630 18TH Ave, Clearlake, CA 95422
- Phone
- (707) 994-6486
- Enumerated
- Nov 1, 2006
- Record last updated
- Dec 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 00G861180 CA
- Medicare enrollment
- Enrolled (PECOS I20110407000438); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 1990
- Entity
- Type 1 · individual
8 nearest critical care medicine (internal medicine) physician records → All 723 in California → Look up another NPI →
Also registered at 15630 18TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John ClarkeAnesthesiology Physician1053329359
- Martina Cordova, FNPFamily Nurse Practitioner1114793643
- Laurie Halversen, LCSWClinical Social Worker1356649545
- Stephenie Hargrove, NPFamily Nurse Practitioner1053927608
- John Hewitt, MDEmergency Medicine Physician1902840176
- Linnea Lantz, DOEmergency Medicine Physician1841759974
Verify Thomas C. Kreck in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G86118Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Permanente Medical Group IncOakland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas C. Kreck among 723 critical care medicine (internal medicine) physician records in California
Thomas C. Kreck, MD is one of 723 critical care medicine (internal medicine) physician records with a practice address in California. 87% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 60% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 77% of these records are
- Graduated1990 · median 2005 among the 559 with a school on file
- Record last updated2021 · 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 207RC0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California.
All 723 in California → Every provider in Clearlake → Critical Care Medicine (Internal Medicine) Physician nationwide →
The 8 critical care medicine (internal medicine) physician records with the nearest ZIP codes
- Kenneth Lamb, M.D.Santa Rosa, CA 954091891896163
- Gina Chen, MDSanta Rosa, CA 954051497773808
- Gregory Houghton, M.D.Santa Rosa, CA 954051649489402
- Hyun Kang, MDSanta Rosa, CA 954051316917883
- Vadim Leyenson, MDSanta Rosa, CA 954041427052851
- Daniel Loube, MDSanta Rosa, CA 954041588690051
- Thomas Nuckton, M.D.Santa Rosa, CA 954041003902834
- James Driscoll, M.D.Santa Rosa, CA 954031013094515
Common questions
What is Thomas C. Kreck, MD's NPI number?
Thomas C. Kreck, MD's National Provider Identifier (NPI) is 1457439200, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas C. Kreck, MD located?
The NPPES record lists a practice address at 15630 18TH Ave, Clearlake, CA, 95422. Phone: (707) 994-6486. Providers update this record themselves, so call before visiting.
How can I verify Thomas C. Kreck, MD's license?
NPPES lists California license number G86118, 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.
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.