Laurence Frederic Greenberg, MD
Psychiatry Physician · Irvine, CA
Laurence Frederic Greenberg, MD is a psychiatry physician with a practice address in Irvine, California, and NPI 1831390103, issued on May 31, 2007. Check the license (California A066346, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Laurence Frederic Greenberg
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- A066346 CA
Self-reported in NPPES; status is on the state search - Practice location
- 19100 Von Karman Ave, Irvine, CA 92612
- Phone
- (949) 222-6662
- Enumerated
- May 31, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (949) 222-6667
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Laurence Frederic Greenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A066346Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average psychiatry physician in 2024
68 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Escitalopram Oxalate18 claims
- Dextroamphetamine-Amphet Er12 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.
Laurence Frederic Greenberg among 8,673 psychiatry physician records in California
Laurence Frederic Greenberg, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% 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 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 psychiatry physician records list a practice address in Irvine
They are 54 of the 7,778 NPPES records with a practice address in Irvine, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Irvine → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Bahman Amadi, M.D.Irvine, CA 926121346660925
- Arde Anoshivani, M.D.Irvine, CA 926121396845186
- Gezelle Azar, M.D.Irvine, CA 926121861954687
- Yujuan Choy, MDIrvine, CA 926121750467148
- Roula Creighton, M.D.Irvine, CA 926121821142373
- Shilpa Diwan, M.D, M.P.HIrvine, CA 926121942457999
- Kiefer GreenspanIrvine, CA 926121629573464
- Parisa Hashemi, DOIrvine, CA 926121013410588
Common questions
What is Laurence Frederic Greenberg, MD's NPI number?
Laurence Frederic Greenberg, MD's National Provider Identifier (NPI) is 1831390103, issued on May 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Laurence Frederic Greenberg, MD located?
The NPPES record lists a practice address at 19100 Von Karman Ave, Irvine, CA, 92612. Phone: (949) 222-6662. Providers update this record themselves, so call before visiting.
How can I verify Laurence Frederic Greenberg, MD's license?
NPPES lists California license number A066346, 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 Laurence Frederic Greenberg, MD prescribe under Medicare Part D?
In 2024, Laurence Frederic Greenberg, MD had 68 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.