David Wallenstein
Family Medicine Physician · Santa Monica, CA
David Wallenstein is a family medicine physician with a practice address in Santa Monica, California, and NPI 1962417386, issued on Jul 31, 2006. Check the license (California A81052, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Wallenstein
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A81052 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1920 Colorado Ave, Santa Monica, CA 90404
- Phone
- (310) 319-4700
- Enumerated
- Jul 31, 2006
- Record last updated
- Nov 25, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (310) 453-5106
- Medicaid ID
- 00A810520 CA
- Medicare enrollment
- Enrolled (PECOS I20040331001726); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1920 Colorado Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- David BalesStudent in an Organized Health Care Education/Training Program1447953906
- Andrea Banuelos Mota, MDStudent in an Organized Health Care Education/Training Program1184201006
Verify David Wallenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A81052Check 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 family medicine physician in 2024
2,106 Medicare Part D claims for 237 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 284 claims were for opioids.
Most prescribed
- Atorvastatin Calcium147 claims
- Oxycodone Hcl86 claims
- Gabapentin57 claims
- Hydrocodone-Acetaminophen49 claims
- Pregabalin49 claims
- Lisinopril45 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
- UC RegentsSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Wallenstein among 17,133 family medicine physician records in California
David Wallenstein 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1997 · median 2005 among the 10,652 with a school on file
- Record last updated2019 · 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).
192 family medicine physician records list a practice address in Santa Monica
They are 192 of the 5,151 NPPES records with a practice address in Santa Monica, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Santa Monica → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Caroline Close, MDSanta Monica, CA 904041467497024
- Lawrence Dardick, MDSanta Monica, CA 904041740200138
- Lillian Gelberg, MDSanta Monica, CA 904041639192487
- Benjamin GilmoreSanta Monica, CA 904041396770178
- Raouf Hallis, MDSanta Monica, CA 904041386688687
- Mary Marfisee, M.D.Santa Monica, CA 904041700829934
- James Murray, MDSanta Monica, CA 904041659307452
- Michael Nagata, MDSanta Monica, CA 904041124054184
Common questions
What is David Wallenstein's NPI number?
David Wallenstein's National Provider Identifier (NPI) is 1962417386, issued on Jul 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Wallenstein located?
The NPPES record lists a practice address at 1920 Colorado Ave, Santa Monica, CA, 90404. Phone: (310) 319-4700. Providers update this record themselves, so call before visiting.
How can I verify David Wallenstein's license?
NPPES lists California license number A81052, 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 David Wallenstein prescribe under Medicare Part D?
In 2024, David Wallenstein had 2,106 Medicare Part D claims for 237 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.