Thomas P. Collopy, M.D.
Anesthesiology Physician · Lakewood, CA
Thomas P. Collopy, M.D. is an anesthesiology physician with a practice address in Lakewood, California, and NPI 1275502262, issued on Mar 14, 2006. Check the license (California A32435, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thomas P. Collopy
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A32435 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3400 E South St, Lakewood, CA 90805
- Phone
- (562) 531-2550
- Enumerated
- Mar 14, 2006
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 3400 E South St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jean Romualdo-Fernandez, RPHPharmacist1558540146
Verify Thomas P. Collopy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A32435Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average anesthesiology physician in 2024
19 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D.
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.
Thomas P. Collopy among 7,571 anesthesiology physician records in California
Thomas P. Collopy, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in Lakewood → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Leslie Lin, M.D.Lakewood, CA 908051053434795
- Kirankumar Vyas, M.D.Lakewood, CA 908051326091679
- Angeline Barnes, M.D.Long Beach, CA 908061366411217
- Christopher Branche, M.D.Long Beach, CA 908061184646549
- Thanh Cung, M.D.Long Beach, CA 908061255350336
- Quan Dang, M.D.Long Beach, CA 908061649292913
- James Dellorusso, M.D.Long Beach, CA 908041366425811
- Mark Doykos, M.D.Long Beach, CA 908061659340115
Common questions
What is Thomas P. Collopy, M.D.'s NPI number?
Thomas P. Collopy, M.D.'s National Provider Identifier (NPI) is 1275502262, issued on Mar 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas P. Collopy, M.D. located?
The NPPES record lists a practice address at 3400 E South St, Lakewood, CA, 90805. Phone: (562) 531-2550. Providers update this record themselves, so call before visiting.
How can I verify Thomas P. Collopy, M.D.'s license?
NPPES lists California license number A32435, 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 Thomas P. Collopy, M.D. prescribe under Medicare Part D?
In 2024, Thomas P. Collopy, M.D. had 19 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. 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.