Peter Singer, M.D.
Endocrinology, Diabetes & Metabolism Physician · Los Angeles, CA
Peter Singer, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Los Angeles, California, and NPI 1851320105, issued on Jun 30, 2006. Check the license (California A22036, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Peter Singer
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A22036 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1520 San Pablo St, Los Angeles, CA 90033
- Phone
- (323) 442-5100
- Enumerated
- Jun 30, 2006
- Record last updated
- Jun 20, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 00A220360 CA
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Also registered at 1520 San Pablo St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Acosta, PHDPsychologist1750313490
- Gbemisola Adenuga, M.D.Nephrology Physician1952464661
- Aimee Aguillon, OTR/L, CHTOccupational Therapist1972677318
- Haig Aharonian, M.D.Internal Medicine Physician1205107653
- Jamshid Ahmadi, M.D.Neuroradiology Physician1942252028
- Mohammad Akmal, M.D.Nephrology Physician1356378087
Verify Peter Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A22036Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
331 Medicare Part D claims for 89 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D.
Most prescribed
- Levothyroxine Sodium170 claims
- Synthroid58 claims
- Methimazole41 claims
- Cabergoline11 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.
Peter Singer among 1,131 endocrinology, diabetes & metabolism physician records in California
Peter Singer, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2016 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Los Angeles → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Braden Barnett, M.D.Los Angeles, CA 900331124386776
- Elizabeth BealeLos Angeles, CA 900331376745893
- Stefan Bughi, M.D.Los Angeles, CA 900331134166671
- John Carmichael, MDLos Angeles, CA 900331396818241
- Christian Gastelum, MDLos Angeles, CA 900331285782268
- Vikram KamdarLos Angeles, CA 900331629004148
- Wei An Lee, D.O.Los Angeles, CA 900331205031804
- Johnathan Lopresti, M.D.Los Angeles, CA 900331568495307
Common questions
What is Peter Singer, M.D.'s NPI number?
Peter Singer, M.D.'s National Provider Identifier (NPI) is 1851320105, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Peter Singer, M.D. located?
The NPPES record lists a practice address at 1520 San Pablo St, Los Angeles, CA, 90033. Phone: (323) 442-5100. Providers update this record themselves, so call before visiting.
How can I verify Peter Singer, M.D.'s license?
NPPES lists California license number A22036, 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 Peter Singer, M.D. prescribe under Medicare Part D?
In 2024, Peter Singer, M.D. had 331 Medicare Part D claims for 89 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.