David Alan Greenberg, M.D.
Neurology Physician · Sonoma, CA
David Alan Greenberg, M.D. is a neurology physician with a practice address in Sonoma, California, and NPI 1336481225, issued on Mar 19, 2013. Check the license (California G42010, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David Alan Greenberg
- Credential
- M.D.
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- G42010 CA
Self-reported in NPPES; status is on the state search - Practice location
- 456 Moll CT, Sonoma, CA 95476
- Phone
- (707) 933-9179
- Enumerated
- Mar 19, 2013
- Record last updated
- Mar 19, 2013 (not updated in 13 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Verify David Alan Greenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G42010Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average neurology physician in 2024
13 Medicare Part D claims, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
David Alan Greenberg among 2,339 neurology physician records in California
David Alan Greenberg, M.D. is one of 2,339 neurology 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 2013, is newer than 69% of them.
- NPI issued2013 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2013 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in Sonoma → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Allan Bernstein, MDSebastopol, CA 954721992889067
- Walid MassarwehUkiah, CA 954821396867412
- Camille Keene, M.D.Lakeport, CA 954531780896951
- Thomas Krenek, MDEureka, CA 955011558329920
- John Gambin, MDEureka, CA 955031588622955
- Donald Iverson, MDEureka, CA 955031356309728
- Melissa McKenzie, DOEureka, CA 955031861450876
- Krithika Umesh Peshwe, MDClearlake, CA 954221093342628
Common questions
What is David Alan Greenberg, M.D.'s NPI number?
David Alan Greenberg, M.D.'s National Provider Identifier (NPI) is 1336481225, issued on Mar 19, 2013. An NPI identifies a provider in billing; it is not a license.
Where is David Alan Greenberg, M.D. located?
The NPPES record lists a practice address at 456 Moll CT, Sonoma, CA, 95476. Phone: (707) 933-9179. Providers update this record themselves, so call before visiting.
How can I verify David Alan Greenberg, M.D.'s license?
NPPES lists California license number G42010, 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 Alan Greenberg, M.D. prescribe under Medicare Part D?
In 2024, David Alan Greenberg, M.D. had 13 Medicare Part D claims; the average among neurology physician prescribers was 1,370. 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.