Gustavo Calleros, MD
Family Medicine Physician · Pasadena, CA
Gustavo Calleros, MD is a family medicine physician with a practice address in Pasadena, California, and NPI 1346358827, issued on Aug 26, 2006. Check the license (California A74210, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gustavo Calleros
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A74210 CA
Self-reported in NPPES; status is on the state search - Practice location
- 50 Bellefontaine St, Pasadena, CA 91105
- Phone
- (626) 793-1931
- Enumerated
- Aug 26, 2006
- Record last updated
- Dec 29, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (626) 793-0161
- Medicaid IDs
- GR0084064 CA
GR0084061 CA
00A74210 CA
GR0084062 CA - Medicare enrollment
- Enrolled (PECOS I20040831001396); accepts Medicare assignment
- Medical or professional school
- University Of California, Irvine, California College Of Medicine, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 50 Bellefontaine St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Gustavo Calleros in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A74210Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average family medicine physician in 2024
11,679 Medicare Part D claims for 746 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 512 claims were for opioids.
Most prescribed
- Amlodipine Besylate461 claims
- Atorvastatin Calcium454 claims
- Metformin Hcl415 claims
- Rosuvastatin Calcium364 claims
- Omeprazole316 claims
- Levothyroxine Sodium311 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: $2,475.56
92 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 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
- Modern Concepts Medical Group IncMontebello, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gustavo Calleros among 17,133 family medicine physician records in California
Gustavo Calleros, MD is one of 17,133 family medicine physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1999 · median 2005 among the 10,652 with a school on file
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Pasadena → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
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- Seema Hanamsagar, MDPasadena, CA 911051952387581
- Victor Luu, M.D.Pasadena, CA 911051437172970
- John Miguel, M.D.Pasadena, CA 911051851484661
- Renee Poole, MDPasadena, CA 911051821268434
- Sylvia Preciado, M.D.Pasadena, CA 911051497806608
Common questions
What is Gustavo Calleros, MD's NPI number?
Gustavo Calleros, MD's National Provider Identifier (NPI) is 1346358827, issued on Aug 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gustavo Calleros, MD located?
The NPPES record lists a practice address at 50 Bellefontaine St, Pasadena, CA, 91105. Phone: (626) 793-1931. Providers update this record themselves, so call before visiting.
How can I verify Gustavo Calleros, MD's license?
NPPES lists California license number A74210, 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 Gustavo Calleros, MD prescribe under Medicare Part D?
In 2024, Gustavo Calleros, MD had 11,679 Medicare Part D claims for 746 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.