Sergio Guillermo Casillas Berumen, M.D.
Vascular Surgery Physician · Chula Vista, CA
Sergio Guillermo Casillas Berumen, M.D. is a vascular surgery physician with a practice address in Chula Vista, California, and NPI 1437470762, issued on Jun 22, 2010. Check the license (California C185956, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sergio Guillermo Casillas Berumen
- Credential
- M.D.
- Primary taxonomy
- Vascular Surgery Physician 2086S0129X
- License numbers
- C185956 CA
MT196707 PA
Self-reported in NPPES; status is on the state search - Practice location
- 1111 Broadway Ste 305, Chula Vista, CA 91911
- Phone
- (619) 567-7007
- Enumerated
- Jun 22, 2010
- Record last updated
- Mar 26, 2024
- Fax
- (619) 567-7775
- Medicare enrollment
- Enrolled (PECOS I20230725001980); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 1111 Broadway Ste 305
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Trevor Earl, PA-CPhysician Assistant1407303639
- Maryhelen KwiatkowskiPhysical Therapy Assistant1518233816
- Mirka Radman, CFNPNurse Practitioner1962770636
- Alexander Salloum, MDVascular Surgery Physician1124176151
Verify Sergio Guillermo Casillas Berumen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C185956Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average vascular surgery physician in 2024
93 Medicare Part D claims for 37 beneficiaries, against an average of 201 among the 3,936 providers of this specialty who prescribed in Part D.
Most prescribed
- Clopidogrel62 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 73.9 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,370.80
21 payments; by number, the most common kind was travel and lodging; the largest payer was Silk Road Medical, Inc. The 4,059 providers of this specialty with any payment received $6,178.00 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
- Sasha Salloum MD Inc A Professional Medical CorporationChula Vista, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vascular Surgery Physician providers in California
There are 580 vascular surgery physician records in California.
Other vascular surgery physician records in California
- Oliver Aalami, M.D.Stanford, CA1225229024
- Shahram Aarabi, MDOakland, CA1972700458
- Arad Abadi, MDLancaster, CA1730673724
- Ryan Abdul-HaqqWest Hollywood, CA1386087864
- Andrew Abi-Chaker, M.D.Sherman Oaks, CA1528488467
- Ahmed Abou-Zamzam, M.D.Loma Linda, CA1558306795
- Joseph Abu-Dalu, MDLos Angeles, CA1821157587
- Queen Abure, MDSan Francisco, CA1710772074
- Riad Adoumie, M.D.Torrance, CA1467465930
- Massoud Agahi, M.D.Beverly Hills, CA1952367070
Common questions
What is Sergio Guillermo Casillas Berumen, M.D.'s NPI number?
Sergio Guillermo Casillas Berumen, M.D.'s National Provider Identifier (NPI) is 1437470762, issued on Jun 22, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Sergio Guillermo Casillas Berumen, M.D. located?
The NPPES record lists a practice address at 1111 Broadway Ste 305, Chula Vista, CA, 91911. Phone: (619) 567-7007. Providers update this record themselves, so call before visiting.
How can I verify Sergio Guillermo Casillas Berumen, M.D.'s license?
NPPES lists California license number C185956, 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 Sergio Guillermo Casillas Berumen, M.D. prescribe under Medicare Part D?
In 2024, Sergio Guillermo Casillas Berumen, M.D. had 93 Medicare Part D claims for 37 beneficiaries; the average among vascular surgery physician prescribers was 201. Part D covers Medicare prescriptions only.
What is Sergio Guillermo Casillas Berumen, M.D.'s MIPS final score?
The 2023 MIPS final score is 73.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.