Hema L. Vaidya-Nathan, M.D.
Family Medicine Physician · Thousand Oaks, CA
Hema L. Vaidya-Nathan, M.D. is a family medicine physician with a practice address in Thousand Oaks, California, and NPI 1225181241, issued on Jan 21, 2007. Check the license (California A33370, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Hema L. Vaidya-Nathan
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A33370 CA
Self-reported in NPPES; status is on the state search - Practice location
- 227 W Janss RD, Thousand Oaks, CA 91360
- Phone
- (805) 496-0135
- Enumerated
- Jan 21, 2007
- Record last updated
- Oct 15, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (805) 496-4222
- Medicare enrollment
- Enrolled (PECOS I20110119000526); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 227 W Janss RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Hema L. Vaidya-Nathan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A33370Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% more Medicare Part D claims than the average family medicine physician in 2024
5,234 Medicare Part D claims for 222 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 157 claims were for opioids.
Most prescribed
- Levothyroxine Sodium295 claims
- Atorvastatin Calcium235 claims
- Amlodipine Besylate190 claims
- Losartan Potassium181 claims
- Furosemide179 claims
- Metoprolol Succinate145 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.
The MIPS final score for 2023 (Medicare payment program): 82.7 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $46.04
2 payments; by number, the most common kind was food and beverage; the largest payer was Ironwood Pharmaceuticals, Inc. The 55,478 providers of this specialty with any payment received $902.55 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.
Hema L. Vaidya-Nathan among 17,133 family medicine physician records in California
Hema L. Vaidya-Nathan, M.D. is one of 17,133 family 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 2007, is newer than 41% of them.
- NPI issued2007 · 41% of these records are older, 47% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1971 · median 2005 among the 10,652 with a school on file
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 family medicine physician records list a practice address in Thousand Oaks
They are 39 of the 2,434 NPPES records with a practice address in Thousand Oaks, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Thousand Oaks → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Elise Bukont, D.O.Thousand Oaks, CA 913601851449888
- Cheryl Cohler, M.D.Thousand Oaks, CA 913601962454041
- Francis Dawson, M.D.Thousand Oaks, CA 913601043390883
- Mark Kasow, M.D.Thousand Oaks, CA 913601619946266
- Barry Lefkovitch, M.D.Thousand Oaks, CA 913601538111752
- Frederick Lindberg, MDThousand Oaks, CA 913601467499582
- Verna Liss, MDThousand Oaks, CA 913601093708174
- Joey Liu, M.D.Thousand Oaks, CA 913601538137013
Common questions
What is Hema L. Vaidya-Nathan, M.D.'s NPI number?
Hema L. Vaidya-Nathan, M.D.'s National Provider Identifier (NPI) is 1225181241, issued on Jan 21, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Hema L. Vaidya-Nathan, M.D. located?
The NPPES record lists a practice address at 227 W Janss RD, Thousand Oaks, CA, 91360. Phone: (805) 496-0135. Providers update this record themselves, so call before visiting.
How can I verify Hema L. Vaidya-Nathan, M.D.'s license?
NPPES lists California license number A33370, 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 Hema L. Vaidya-Nathan, M.D. prescribe under Medicare Part D?
In 2024, Hema L. Vaidya-Nathan, M.D. had 5,234 Medicare Part D claims for 222 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
What is Hema L. Vaidya-Nathan, M.D.'s MIPS final score?
The 2023 MIPS final score is 82.7 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.