Allan David Singer, M.D.
Allergy & Immunology Physician · Torrance, CA
Allan David Singer, M.D. is an allergy & immunology physician with a practice address in Torrance, California, and NPI 1417951070, issued on Jun 10, 2005. Check the license (California C32780, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Allan David Singer
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- C32780 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3440 Lomita Blvd, Torrance, CA 90505
- Phone
- (310) 326-3371
- Enumerated
- Jun 10, 2005
- Record last updated
- Sep 23, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (310) 326-2294
- Medicare enrollment
- Enrolled (PECOS I20080430000589); accepts Medicare assignment
- Medical or professional school
- University Of Minnesota Medical School, 1967
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 444 in California → Look up another NPI →
Also registered at 3440 Lomita Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Allan David Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C32780Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
145 Medicare Part D claims for 43 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Wixela Inhub21 claims
- Xolair18 claims
- Ipratropium Bromide13 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.
Industry payments in 2024: $181.87
7 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 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.
Bills Medicare through one group practice
- Allan D Singer MD Inc And Dean T Chiang MD Inc A Medical PartnershipTorrance, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Allan David Singer among 444 allergy & immunology physician records in California
Allan David Singer, M.D. is one of 444 allergy & immunology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1967 · median 2004 among the 281 with a school on file
- Record last updated2015 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in California
There are 444 allergy & immunology physician records in California.
All 444 in California → Every provider in Torrance → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Dean Chiang, M.D.Torrance, CA 905051760484455
- Stephen Grifka, M.D.Torrance, CA 905051902089006
- Yana Kryvokhyzha, DOTorrance, CA 905051548753312
- Connie Lin, M.D.Torrance, CA 905051760825590
- Eric YenTorrance, CA 905051447464375
- Ellyn Ashida, MDTorrance, CA 905031245201516
- Edward Buchsbaum, MDTorrance, CA 905031376648170
- Heather Volpp, M.D.Torrance, CA 905031083702120
Common questions
What is Allan David Singer, M.D.'s NPI number?
Allan David Singer, M.D.'s National Provider Identifier (NPI) is 1417951070, issued on Jun 10, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Allan David Singer, M.D. located?
The NPPES record lists a practice address at 3440 Lomita Blvd, Torrance, CA, 90505. Phone: (310) 326-3371. Providers update this record themselves, so call before visiting.
How can I verify Allan David Singer, M.D.'s license?
NPPES lists California license number C32780, 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 Allan David Singer, M.D. prescribe under Medicare Part D?
In 2024, Allan David Singer, M.D. had 145 Medicare Part D claims for 43 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.