Dr. Daisy J. Guevara, MD
- Medicare services, 2022
- 70
- Part D claims, 2024
- 1,749
- Industry payments
- $1,548
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 8311 Florence Ave, Downey, CA 90240
- Practice phone
- Call (323) 268-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Adventist Health White Memorial
Downey, California
Find Dr. Guevara's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Daisy J. Guevara is an internist in Downey, California
Dr. Guevara practices at Adventist Health White Memorial in Downey, California.
Dr. Guevara's NPI, 1396740932, was assigned on June 20, 2005. Dr. Guevara graduated from University of Santo Tomas in 1982. Dr. Guevara holds California license A48966.
- NPI
- 1396740932NPI Registry (opens in a new tab)
- NPI enumeration date
- June 20, 2005
- NPI status
- Active
- Practice phone
- (323) 268-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Daisy J. Guevara practices at Adventist Health White Memorial in Downey, California
Dr. Guevara's primary practice is Adventist Health White Memorial, at 8311 Florence Ave, Downey, CA 90240 in Los Angeles County. The practice phone is (323) 268-5000.
- Adventist Health White Memorial8311 Florence Ave, Downey, CA 90240 · Los Angeles CountyPhone(323) 268-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Daisy J. Guevara is affiliated with 2 sites of care and 1 medical group
Dr. Guevara's primary practice is Adventist Health White Memorial in Downey, California. The medical group on file is Optum - Downtown Los Angeles. Dmand AI also links Dr. Guevara to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Daisy J. Guevara's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guevara practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health White Memorial | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daisy J. Guevara is one of 16,751 internists in California
Internal medicine is Dr. Guevara's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Guevara is board certified in internal medicine by the American Board of Internal Medicine. Dr. Guevara is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists deep vein thrombosis (DVT) and UTI among the conditions Dr. Guevara treats.
Internists near Dr. Guevara
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Daisy J. Guevara billed Medicare for 70 services in 2022
CMS data shows 70 Medicare services from Dr. Guevara across 4 procedure codes in 2022. Medicare paid $5,554 for them. Every service was in an office.
Dr. Guevara's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 922022: 4353%
- Tests and treatments
- 2021: 312022: 1552%
- Other services
- 2021: 3212022: 1296%
Dr. Guevara compared with the California median for internists, 2022
- Dr. Guevara
- California median
- Medicare services
- 70vs 36181% below
- Part D claims
- 1,092vs 4212.6 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Guevara's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Guevara?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guevara and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Daisy J. Guevara's patients have a median age of 70
Across all payers, Dmand AI patient panel data puts Dr. Guevara's median patient age at 70, with 71% women.
Dr. Guevara's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women71%
- Men28%
Source: Dmand AI Patient Panel Data
Dr. Daisy J. Guevara wrote 1,749 Medicare Part D claims in 2024
In 2024, Dr. Guevara wrote 1,749 Medicare Part D claims for 69 patients. 76% of them were for generic drugs. CMS names the drug for 1,092 of them, across 46 drugs with 11 or more claims each, at $57,152 in total drug cost. In 2023, CMS named 1,806 claims across 63 drugs.
Dr. Guevara's Part D claims by kind of drug, 2024
- Generic1,332 claims76%
- Brand-name403 claims23%
- Other14 claims1%
Dr. Guevara's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Guevara's Part D claims, 2024
- Opioids2%31 of 1,749 claims
- Antibiotics5%86 of 1,749 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,8062024: 1,09240%
Drugs named by CMS: 46 in 2024, 63 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Daisy J. Guevara received $1,548 in industry payments from 2016 to 2024
CMS Open Payments shows 89 general payments to Dr. Guevara from 19 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 99% of the total. Merck Sharp & Dohme Corporation paid the most, $274.
General payments to Dr. Guevara by program year, 2016 to 2024
General payments to Dr. Guevara by kind, 2016 to 2024
- Food and beverage$1,53399%
- Education$151%
Companies that paid Dr. Guevara the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Daisy J. Guevara has 1 award and honors on record
Dmand AI lists 1 award for Dr. Guevara, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Guevara
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Daisy J. Guevara graduated from University of Santo Tomas
Dr. Guevara graduated from University of Santo Tomas in 1982.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Daisy J. Guevara accepts plans from 6 insurance carriers
Dr. Guevara is in network with 6 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Elevance
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- CMS Medicare
Plan types Dr. Guevara accepts, by number of carriers
- Medicare6
- PPO5
- HMO2
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Daisy J. Guevara's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Daisy J. Guevara
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Daisy J. Guevara's NPI number?
Dr. Daisy J. Guevara's NPI number is 1396740932. It was assigned on June 20, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Daisy J. Guevara?
Dr. Daisy J. Guevara is an internist in Downey, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Daisy J. Guevara practice?
Dr. Guevara practices at 8311 Florence Ave, Downey, CA 90240. Dr. Guevara's primary practice is Adventist Health White Memorial in Downey, California. Dmand AI also links Dr. Guevara to 1 group practice or clinic.
What is Dr. Daisy J. Guevara's office phone number?
The practice phone on file for Dr. Guevara is (323) 268-5000.
What is Dr. Daisy J. Guevara's medical license number?
Dr. Guevara holds California license A48966.
What medical group is Dr. Daisy J. Guevara part of?
Dr. Guevara is linked to Optum - Downtown Los Angeles.
Does Dr. Daisy J. Guevara accept Medicare?
Yes. CMS data shows Dr. Guevara billed Medicare for 70 services in 2022.
Is Dr. Daisy J. Guevara board certified?
Yes. Dr. Guevara is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Daisy J. Guevara bill to Medicare?
In 2022, Dr. Guevara's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93000) and office visit, established patient (99213).
Where did Dr. Daisy J. Guevara go to medical school?
Dr. Guevara graduated from University of Santo Tomas in 1982.
Show 4 more questionsShow fewer questions
What drugs does Dr. Daisy J. Guevara prescribe most?
In 2024 Medicare Part D data, Dr. Guevara's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Daisy J. Guevara received payments from drug or device companies?
CMS Open Payments shows $1,548 in general payments to Dr. Guevara from 19 companies from 2016 to 2024. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Daisy J. Guevara been practicing?
Dr. Guevara graduated from medical school in 1982, 44 years ago.
What insurance does Dr. Daisy J. Guevara accept?
Dr. Guevara is in network with 6 carriers, including Elevance, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 6. Check the plan with the practice before a visit.
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