Margaret V. Cooper Vaughn, M.D.
Specialist · Los Gatos, CA
Margaret V. Cooper Vaughn, M.D. is a specialist with a practice address in Los Gatos, California, and NPI 1982607990, issued on May 23, 2005. Check the license (California A87941, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret V. Cooper Vaughn
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- A87941 CA
Self-reported in NPPES; status is on the state search - Practice location
- 815 Pollard RD, Los Gatos, CA 95032
- Phone
- (800) 967-2289
- Enumerated
- May 23, 2005
- Record last updated
- Aug 4, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (760) 320-1805
- Medicare enrollment
- Enrolled (PECOS I20050610000561); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 1998
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 815 Pollard RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Samuel Ballon, M.D.Gynecologic Oncology Physician1760408173
- Ivan Burgos, M.DEmergency Medicine Physician1114963121
- Michael Dinh, PHARMDPharmacist1235905050
- Brendan EggenSpeech-Language Pathologist1396216933
- Edward Ellsworth, M.D.Anatomic Pathology & Clinical Pathology Physician1477547008
- Sara Farr, M.D.Internal Medicine Physician1356562789
Verify Margaret V. Cooper Vaughn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license A87941Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average specialist in 2024
32 Medicare Part D claims for 12 beneficiaries, against an average of 1,380 among the 8,233 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.
Industry payments in 2024: $73.44
3 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
2 hospitals and group practices
- County OF Santa ClaraSan Jose, CA
- Hazel Hawkins Memorial HospitalHollister, CA · Critical Access Hospitals
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).
Margaret V. Cooper Vaughn among 5,749 specialist records in California
Margaret V. Cooper Vaughn, M.D. is one of 5,749 specialist records with a practice address in California. 30% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 30% of these records are
- In the CMS Doctors and Clinicians fileYes · 19% of these records are
- Graduated1998 · median 1989 among the 1,075 with a school on file
- Record last updated2015 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 specialist records list a practice address in Los Gatos
They are 34 of the 1,905 NPPES records with a practice address in Los Gatos, and 5,749 specialist records in California.
All 5,749 in California → Every provider in Los Gatos → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- James Davilla, M.D.Los Gatos, CA 950321285625533
- Terence Delaney, MDLos Gatos, CA 950321205861226
- Jeffrey Gutman, M.D.Los Gatos, CA 950321083649248
- Alfred Hurwitz, M DLos Gatos, CA 950321053334698
- Chung Liao, M.D.Los Gatos, CA 950321124082466
- Willie Lu, MDLos Gatos, CA 950321114959558
- James Mellema, MDLos Gatos, CA 950321376582528
- Thomas Roberts, M.D.Los Gatos, CA 950321912971045
Common questions
What is Margaret V. Cooper Vaughn, M.D.'s NPI number?
Margaret V. Cooper Vaughn, M.D.'s National Provider Identifier (NPI) is 1982607990, issued on May 23, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Margaret V. Cooper Vaughn, M.D. located?
The NPPES record lists a practice address at 815 Pollard RD, Los Gatos, CA, 95032. Phone: (800) 967-2289. Providers update this record themselves, so call before visiting.
How can I verify Margaret V. Cooper Vaughn, M.D.'s license?
NPPES lists California license number A87941, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Margaret V. Cooper Vaughn, M.D. prescribe under Medicare Part D?
In 2024, Margaret V. Cooper Vaughn, M.D. had 32 Medicare Part D claims for 12 beneficiaries; the average among specialist prescribers was 1,380. 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.