Dr. James Nicholas Peros, MD
- Medicare services, 2020
- 49
- Part D claims, 2021
- 151
- Hospital affiliations
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 1200 El Camino Real, South San Francisco, CA 94080
- Practice phone
- Call (650) 742-3200
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Peros' professional email, personal email and mobile number
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Dr. James Nicholas Peros is an internist in Redwood City, California
Dr. Peros practices at Kaiser Permanente South San Francisco Medical Center in South San Francisco, California, part of Kaiser Permanente.
Dr. Peros' NPI, 1003978719, was assigned on December 16, 2006. Dr. Peros graduated from Washington University School of Medicine in 2004. Dr. Peros holds California license A100167.
- NPI
- 1003978719NPI Registry (opens in a new tab)
- NPI enumeration date
- December 16, 2006
- NPI status
- Active
- Practice phone
- (650) 742-3200
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Nicholas Peros practices in South San Francisco and Redwood City
Dr. Peros' primary practice is Kaiser Permanente South San Francisco Medical Center, at 1200 El Camino Real, South San Francisco, CA 94080 in San Mateo County. The practice phone is (650) 742-3200. The NPI Registry lists Dr. Peros' practice address as 1100 Veterans Blvd, Redwood City, CA 94063.
- Kaiser Permanente South San Francisco Medical CenterPrimary1200 El Camino Real, South San Francisco, CA 94080 · San Mateo CountyPhone(650) 742-3200
- NPI Registry address1100 Veterans Blvd, Redwood City, CA 94063 · San Mateo CountyPhone(650) 742-2000
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. James Nicholas Peros is affiliated with 1 site of care and 1 medical group
Dr. Peros' primary practice is Kaiser Permanente South San Francisco Medical Center in South San Francisco, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James Nicholas Peros' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Peros practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente South San Francisco Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James Nicholas Peros is one of 16,751 internists in California
Internal medicine is Dr. Peros' primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Peros is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Peros
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. James Nicholas Peros billed Medicare for 49 services in 2020
CMS data shows 49 Medicare services from Dr. Peros across 1 procedure code in 2020. Medicare paid $314 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Peros' Medicare services by type, 2019 to 2020
- 2019
- 2020
- Tests and treatments
- 2019: 622020: 4921%
Dr. Peros compared with the California median for internists, 2020
- Dr. Peros
- California median
- Medicare services
- 49vs 36186% below
- Part D claims
- 151vs 42164% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Peros' most billed Medicare procedure codes, 2020
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James Nicholas Peros' patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Peros' median patient age at 73, with 38% women.
Dr. Peros' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women38%
- Men59%
Source: Dmand AI Patient Panel Data
Dr. James Nicholas Peros wrote 151 Medicare Part D claims in 2021
In 2021, Dr. Peros wrote 151 Medicare Part D claims. They cover 8 drugs, with $8,503 in total drug cost. In 2020, CMS named 46 claims across 3 drugs.
Dr. Peros' most prescribed drugs by claims, 2021
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2020 to 2021
- 2020
- 2021
- Claims for drugs CMS names
- 2020: 462021: 151228%
Drugs named by CMS: 8 in 2021, 3 in 2020.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. James Nicholas Peros graduated from Washington University School of Medicine
Dr. Peros graduated from Washington University School of Medicine in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James Nicholas Peros'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)Dmand AI Org Hierarchy 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) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. James Nicholas Peros
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. James Nicholas Peros' NPI number?
Dr. James Nicholas Peros' NPI number is 1003978719. It was assigned on December 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. James Nicholas Peros?
Dr. James Nicholas Peros is an internist in Redwood City, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. James Nicholas Peros practice?
Dr. Peros practices at 1200 El Camino Real, South San Francisco, CA 94080. Dr. Peros also practices at 1100 Veterans Blvd, Redwood City, CA 94063. Dr. Peros' primary practice is Kaiser Permanente South San Francisco Medical Center in South San Francisco, California, part of Kaiser Permanente.
What is Dr. James Nicholas Peros' office phone number?
The practice phone on file for Dr. Peros is (650) 742-3200.
What is Dr. James Nicholas Peros' medical license number?
Dr. Peros holds California license A100167.
Which hospitals is Dr. James Nicholas Peros affiliated with?
Dr. Peros practices at Kaiser Permanente South San Francisco Medical Center in South San Francisco, California.
What medical group is Dr. James Nicholas Peros part of?
Dr. Peros is linked to The Permanente Medical Group, Inc.
Does Dr. James Nicholas Peros accept Medicare?
Yes. CMS data shows Dr. Peros billed Medicare for 49 services in 2020.
What services does Dr. James Nicholas Peros bill to Medicare?
In 2020, Dr. Peros' most billed Medicare services were heart test or procedure (93010).
Where did Dr. James Nicholas Peros go to medical school?
Dr. Peros graduated from Washington University School of Medicine in 2004.
What drugs does Dr. James Nicholas Peros prescribe most?
In 2021 Medicare Part D data, Dr. Peros' most prescribed drugs by claims were Atorvastatin Calcium, Cefpodoxime Proxetil and Furosemide.
How long has Dr. James Nicholas Peros been practicing?
Dr. Peros graduated from medical school in 2004, 22 years ago.
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