NPPES file of Aug 9, 2026

Ronald E. Guth, M.D.

Anesthesiology Physician · Ukiah, CA

Ronald E. Guth, M.D. is an anesthesiology physician with a practice address in Ukiah, California, and NPI 1720016439, issued on Jun 29, 2006. Check the license (California G44960, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1720016439
Name
Ronald E. Guth
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
G44960 CA
Self-reported in NPPES; status is on the state search
Practice location
275 Hospital Dr, Ukiah, CA 95482
Phone
(707) 462-3111
Enumerated
Jun 29, 2006
Record last updated
Sep 7, 2007 (not updated in 19 years: call before relying on the address or phone)
Medicaid ID
00G449600 CA
Medicare enrollment
Enrolled (PECOS I20120201000629); accepts Medicare assignment
Medical or professional school
Loma Linda University School Of Medicine, 1979
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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Also registered at 275 Hospital Dr

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

  1. Fadi Arodaki, DOHospitalist Physician1720499023
  2. Erin Bainbridge, N.P.Family Nurse Practitioner1104368729
  3. Rachel Barber, F.N.P.Nurse Practitioner1518248970
  4. Lillian Basner, FNPNurse Practitioner1750321972
  5. Donald Bond, PHARMD, RPHPharmacist1679946446
  6. Alejandro Casillas, M.D.Emergency Medicine Physician1376707919

Verify Ronald E. Guth in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G44960
    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

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Industry payments in 2024: $31.43

1 payment: food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Ronald Guth$31.43
  2. Specialty average$669.59

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Anesthesia Management Services OF California IncUkiah, CA

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

Ronald E. Guth among 7,571 anesthesiology physician records in California

Ronald E. Guth, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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 5% of them.

  • NPI issued2006 · 5% of these records are older, 53% newer
  • In a Medicare fileYes · 71% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated1979 · median 2006 among the 4,868 with a school on file
  • Record last updated2007 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in California

There are 7,571 anesthesiology physician records in California.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Matthew Harper, M.D.Ukiah, CA 954821427165877
  2. Frederick Lodge, M.D.Ukiah, CA 954821790770428
  3. Earl Outlund, MDUkiah, CA 954821154373645
  4. Michael Lipson, M.D.Sonoma, CA 954761295763084
  5. Richard Raley, M.D.Sonoma, CA 954761518128867
  6. Cletus Bodensteiner, M.D.Willits, CA 954901477891794
  7. David Benefiel, M.D.Sebastopol, CA 954721285976225
  8. Kenneth Economy, MDSebastopol, CA 954721255347035

Common questions

What is Ronald E. Guth, M.D.'s NPI number?

Ronald E. Guth, M.D.'s National Provider Identifier (NPI) is 1720016439, issued on Jun 29, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Ronald E. Guth, M.D. located?

The NPPES record lists a practice address at 275 Hospital Dr, Ukiah, CA, 95482. Phone: (707) 462-3111. Providers update this record themselves, so call before visiting.

How can I verify Ronald E. Guth, M.D.'s license?

NPPES lists California license number G44960, 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.