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Dr. Katarina Guzman, MD
NPI1598737645
- Medicare services, 2021
- 493
- Part D claims, 2024
- 145
- Publications
- 2
- Industry payments
- $32
- Affiliated sites
- 1
- Practice address
- 2585 Samaritan Dr, San Jose, CA 95124-4107
- Practice phone
- Call (408) 278-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Dchs Medical Foundation
Multi-specialty group site · San Jose, California
Find Dr. Guzman'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. Katarina Guzman is a hospitalist in Antioch, California
Dr. Guzman practices at Dchs Medical Foundation in San Jose, California.
Dr. Guzman's NPI, 1598737645, was assigned on February 3, 2006. Dr. Guzman graduated from University Karlovy, Lek Fak Ii in 1989. Dr. Guzman's California license number on file is C53016.
NPI and contact details
- NPI
- 1598737645NPI Registry (opens in a new tab)
- NPI enumeration date
- February 3, 2006
- NPI status
- Active
- Practice phone
- (408) 278-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Medical school graduation
- 1989
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Katarina Guzman practices in San Jose and Antioch
Dr. Guzman's primary practice is Dchs Medical Foundation, at 2585 Samaritan Dr, San Jose, CA 95124-4107. The practice phone is (408) 278-3000. The NPI Registry lists Dr. Guzman's practice address as 4501 Sand Creek Rd, Antioch, CA 94531.
- Dchs Medical FoundationPrimary2585 Samaritan Dr, San Jose, CA 95124-4107Phone(408) 278-3000
- NPI Registry address4501 Sand Creek Rd, Antioch, CA 94531 · Contra Costa CountyPhone(408) 278-3000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Katarina Guzman is affiliated with 1 site of care and 3 medical groups
Dr. Guzman's primary practice is Dchs Medical Foundation in San Jose, California. The medical group on file is Sound Physicians. Dmand AI also links Dr. Guzman to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Katarina Guzman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guzman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dchs Medical Foundation | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Katarina Guzman is one of 3,186 hospitalists in California
Hospitalist is Dr. Guzman's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Guzman is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Guzman's licenses on file in 2 states: California and Minnesota.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
- Internal medicine, Minnesota
Clinical focus
Dmand AI lists heart attack, pneumonia and respiratory infection and sepsis among the conditions Dr. Guzman treats.
Hospitalists near Dr. Guzman
Counts of hospitalists 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. Katarina Guzman billed Medicare for 493 services in 2021
CMS data shows 493 Medicare services from Dr. Guzman across 5 procedure codes in 2021. Medicare paid $44,781 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2021493
Paid by Medicare$44,781
Procedure codes5
Dr. Guzman's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 4792021: 4933%
Dr. Guzman compared with the California median for hospitalists, 2021
- Dr. Guzman
- California median
- Medicare services
- 493vs 43015% above
- Part D claims
- 22vs 6968% below
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Guzman's most billed Medicare procedure codes, 2021
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. Guzman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Guzman and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Katarina Guzman wrote 145 Medicare Part D claims in 2024
In 2024, Dr. Guzman wrote 145 Medicare Part D claims for 44 patients. 76% of them were for generic drugs. CMS names the drug for 22 of them, across 2 drugs with 11 or more claims each, at $330 in total drug cost. In 2023, CMS named 126 claims across 9 drugs.
Part D claims, 2024145
Drugs named by CMS2
Total drug cost$330
Part D patients44
Dr. Guzman's Part D claims by kind of drug, 2024
- Generic110 claims76%
- Brand-name and other35 claims24%
Dr. Guzman'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. Guzman's Part D claims, 2024
- Antibiotics10%14 of 145 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: 1262024: 2283%
Drugs named by CMS: 2 in 2024, 9 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. Katarina Guzman has 2 publications on record
Dmand AI links 2 papers to Dr. Guzman, published from 2021 to 2023.
Papers2
Years published2021 to 2023
Recent publications by Dr. Guzman
See who Dr. Guzman researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Guzman works with, so you can find a warm path to the right hospitalists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Katarina Guzman received $32 in industry payments in 2018
CMS Open Payments shows 2 general payments to Dr. Guzman from 2 drug and device companies in 2018. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $16.
Companies that paid Dr. Guzman the most, 2018 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Katarina Guzman graduated from University Karlovy, Lek Fak Ii
Dr. Guzman graduated from University Karlovy, Lek Fak Ii in 1989.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Katarina Guzman accepts plans from 2 insurance carriers
Dr. Guzman is in network with 2 carriers, including Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Massachusetts
- HCSC
Plan types Dr. Guzman accepts, by number of carriers
- Medicare2
- PPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Katarina Guzman'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Katarina Guzman
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. Katarina Guzman's NPI number?
Dr. Katarina Guzman's NPI number is 1598737645. It was assigned on February 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Katarina Guzman?
Dr. Katarina Guzman is a hospitalist in Antioch, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Katarina Guzman practice?
Dr. Guzman practices at 2585 Samaritan Dr, San Jose, CA 95124-4107. Dr. Guzman also practices at 4501 Sand Creek Rd, Antioch, CA 94531. Dr. Guzman's primary practice is Dchs Medical Foundation in San Jose, California. Dmand AI also links Dr. Guzman to 2 medical groups.
What is Dr. Katarina Guzman's office phone number?
The practice phone on file for Dr. Guzman is (408) 278-3000.
What is Dr. Katarina Guzman's medical license number?
Dr. Guzman's California license number on file is C53016, one of the licenses on file in 2 states.
Which states has Dr. Katarina Guzman been licensed in?
Dmand AI has state licenses on file for Dr. Guzman in California (2007 to 2025) and Minnesota (1996 to 2008).
What medical group is Dr. Katarina Guzman part of?
Dr. Guzman is linked to Sound Physicians. Dmand AI links Dr. Guzman to 2 more medical groups.
Does Dr. Katarina Guzman accept Medicare?
Yes. CMS data shows Dr. Guzman billed Medicare for 493 services in 2021.
Is Dr. Katarina Guzman board certified?
Yes. Dr. Guzman is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Katarina Guzman bill to Medicare?
In 2021, Dr. Guzman's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99232) and hospital inpatient care (99239).
Show 6 more questionsShow fewer questions
Where did Dr. Katarina Guzman go to medical school?
Dr. Guzman graduated from University Karlovy, Lek Fak Ii in 1989.
What drugs does Dr. Katarina Guzman prescribe most?
In 2024 Medicare Part D data, Dr. Guzman's most prescribed drugs by claims were Albuterol Sulfate Hfa and Prednisone.
Has Dr. Katarina Guzman received payments from drug or device companies?
CMS Open Payments shows $32 in general payments to Dr. Guzman from 2 companies from 2018 to 2018. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Katarina Guzman been practicing?
Dr. Guzman graduated from medical school in 1989, 37 years ago.
Does Dr. Katarina Guzman do research?
Dmand AI links 2 publications to Dr. Guzman, published from 2021 to 2023.
What insurance does Dr. Katarina Guzman accept?
Dr. Guzman is in network with 2 carriers, including Blue Cross Blue Shield of Massachusetts and HCSC. Medicare plans come from the most carriers, 2. Check the plan with the practice before a visit.
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