Margaret Peacock, M.D.
Emergency Medical Services (Emergency Medicine) Physician · Petaluma, CA
Margaret Peacock, M.D. is an emergency medical services (emergency medicine) physician with a practice address in Petaluma, California, and NPI 1760413793, issued on Jul 6, 2006. Check the license (California C43105, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Margaret Peacock
- Credential
- M.D.
- Primary taxonomy
- Emergency Medical Services (Emergency Medicine) Physician 207PE0004X
- License number
- C43105 CA
Self-reported in NPPES; status is on the state search - Practice location
- 400 N Mcdowell Blvd, Petaluma, CA 94954
- Phone
- (707) 778-1111
- Enumerated
- Jul 6, 2006
- Record last updated
- Feb 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20071109000568); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medical services (emergency medicine) physician records → All 233 in California → Look up another NPI →
Also registered at 400 N Mcdowell Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sherwin Abdoli, MDSurgery Physician1508386442
- Padma Aluru, MDInternal Medicine Physician1992325526
- Lindsay Autio, MDAnesthesiology Physician1629010814
- Nicholas Bautista, RNRegistered Nurse1023833167
- Susan Buren, M.D.Emergency Medical Services (Emergency Medicine) Physician1457382491
- Andrew Chinnock, FNPNurse Practitioner1174844674
Verify Margaret Peacock in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C43105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average emergency medical services (emergency medicine) physician in 2024
172 Medicare Part D claims for 136 beneficiaries, against an average of 292 among the 1,653 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims.
Most prescribed
- Cephalexin35 claims
- Amoxicillin-Clavulanate Potass15 claims
- Prednisone13 claims
- Doxycycline Hyclate11 claims
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.
Bills Medicare through one group practice
- Sutter Bay Medical FoundationSanta Rosa, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Peacock among 233 emergency medical services (emergency medicine) physician records in California
Margaret Peacock, M.D. is one of 233 emergency medical services (emergency medicine) physician records with a practice address in California. 69% 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, 50% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated1982 · median 2002 among the 99 with a school on file
- Record last updated2021 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207PE0004X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medical Services (Emergency Medicine) Physician providers in California
There are 233 emergency medical services (emergency medicine) physician records in California.
All 233 in California → Every provider in Petaluma → Emergency Medical Services (Emergency Medicine) Physician nationwide →
The 8 emergency medical services (emergency medicine) physician records with the nearest ZIP codes
- Susan Buren, M.D.Petaluma, CA 949541457382491
- Henry Fong, M.D.Petaluma, CA 949541306861158
- Earl Herr, M.D.Petaluma, CA 949541104841956
- Stephen Krickl, M.D.Petaluma, CA 949541649205915
- Rodney Look, M.D.Petaluma, CA 949541831120781
- Tania Sadoun, MDPetaluma, CA 949541639405640
- Albert Sae, M.D.Petaluma, CA 949541578590147
- Donald Schmidt, M.D.Petaluma, CA 949541053346353
Common questions
What is Margaret Peacock, M.D.'s NPI number?
Margaret Peacock, M.D.'s National Provider Identifier (NPI) is 1760413793, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Peacock, M.D. located?
The NPPES record lists a practice address at 400 N Mcdowell Blvd, Petaluma, CA, 94954. Phone: (707) 778-1111. Providers update this record themselves, so call before visiting.
How can I verify Margaret Peacock, M.D.'s license?
NPPES lists California license number C43105, 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 Margaret Peacock, M.D. prescribe under Medicare Part D?
In 2024, Margaret Peacock, M.D. had 172 Medicare Part D claims for 136 beneficiaries; the average among emergency medical services (emergency medicine) physician prescribers was 292. 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.