Robert T. Petty, DO
Emergency Medicine Physician · Sonoma, CA
Robert T. Petty, DO is an emergency medicine physician with a practice address in Sonoma, California, and NPI 1497795496, issued on Jun 7, 2006. Check the license (California 20A 4256, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Robert T. Petty
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 20A 4256 CA
DO00001542 WA
OP1542 WA
Self-reported in NPPES; status is on the state search - Practice location
- 866 Donner Ave, Sonoma, CA 95476
- Phone
- (360) 708-7940
- Enumerated
- Jun 7, 2006
- Record last updated
- Jan 28, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 8214223 WA
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Verify Robert T. Petty in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A 4256Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
81% fewer Medicare Part D claims than the average emergency medicine physician in 2024
42 Medicare Part D claims for 20 beneficiaries, against an average of 226 among the 54,106 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.
Robert T. Petty among 7,751 emergency medicine physician records in California
Robert T. Petty, DO is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 59% of these records are
- Record last updated2013 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 emergency medicine physician records list a practice address in Sonoma
They are 8 of the 395 NPPES records with a practice address in Sonoma, and 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Sonoma → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Erick French, MDSonoma, CA 954761649206806
- Jay Goldberg, MDSonoma, CA 954761225141971
- Leslie Graham, M.D.Sonoma, CA 954761841463346
- Stephen Kahn, MDSonoma, CA 954761962515262
- William Keyser, MDSonoma, CA 954761306859194
- Nicolas Sawyer, M.D.Sonoma, CA 954761033470760
- Mark Wills, MDSonoma, CA 954761063525715
- Michele Borgeson, MDSebastopol, CA 954721396700936
Common questions
What is Robert T. Petty, DO's NPI number?
Robert T. Petty, DO's National Provider Identifier (NPI) is 1497795496, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert T. Petty, DO located?
The NPPES record lists a practice address at 866 Donner Ave, Sonoma, CA, 95476. Phone: (360) 708-7940. Providers update this record themselves, so call before visiting.
How can I verify Robert T. Petty, DO's license?
NPPES lists California license number 20A 4256, 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.
How much does Robert T. Petty, DO prescribe under Medicare Part D?
In 2024, Robert T. Petty, DO had 42 Medicare Part D claims for 20 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.