Dr. Christopher David Johnson, MD
- Medicare services, 2023
- 12
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 110
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 2500 Merced Street, San Leandro, CA 94577
- Practice phone
- Call (510) 454-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. Christopher David Johnson is an emergency medicine physician in San Leandro, California
Dr. Johnson practices at San Leandro Medical Center in San Leandro, California, part of Kaiser Permanente.
Dr. Johnson's NPI, 1720285620, was assigned on July 3, 2007. Dr. Johnson graduated from New York University School of Medicine in 2007. Dr. Johnson holds California license A115329.
- NPI
- 1720285620NPI Registry (opens in a new tab)
- NPI enumeration date
- July 3, 2007
- NPI status
- Active
- Practice phone
- (510) 454-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 45
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Christopher David Johnson practices at San Leandro Medical Center in San Leandro, California
Dr. Johnson's primary practice is San Leandro Medical Center, at 2500 Merced Street, San Leandro, CA 94577 in Alameda County. The practice phone is (510) 454-1000.
- San Leandro Medical Center2500 Merced Street, San Leandro, CA 94577 · Alameda CountyPhone(510) 454-1000
Source: Dmand AI Affiliation Data
Dr. Christopher David Johnson is affiliated with 2 sites of care and 1 medical group
Dr. Johnson's primary practice is San Leandro Medical Center in San Leandro, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Johnson to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Christopher David Johnson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| San Leandro Medical Center | 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. Christopher David Johnson is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Johnson is board certified in emergency medicine by the American Board of Emergency Medicine. Dr. Johnson is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Johnson
Counts of emergency medicine physicians 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. Christopher David Johnson billed Medicare for 12 services in 2023
CMS data shows 12 Medicare services from Dr. Johnson across 1 procedure code in 2023, for 13 Medicare patients. Medicare paid $1,760 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Johnson's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 132023: 128%
Dr. Johnson compared with the California median for emergency medicine physicians, 2023
- Dr. Johnson
- California median
- Medicare services
- 12vs 26595% below
- Medicare patients
- 13vs 24395% below
- Part D claims
- 11vs 6282% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Johnson's most billed Medicare procedure codes, 2023
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. Christopher David Johnson treated 13 Medicare patients in 2024, average age 66
CMS counts 13 Medicare patients who saw Dr. Johnson in 2024. Their average risk score is 2.50, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Johnson's median patient age at 48, with 59% women.
Dr. Johnson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women59%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Christopher David Johnson wrote 110 Medicare Part D claims in 2024
In 2024, Dr. Johnson wrote 110 Medicare Part D claims for 71 patients. 91% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $77 in total drug cost. In 2023, CMS named 12 claims across 1 drug.
Dr. Johnson's Part D claims by kind of drug, 2024
- Generic100 claims91%
- Brand-name and other10 claims9%
Dr. Johnson'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. Johnson's Part D claims, 2024
- Opioids16%18 of 110 claims
- Antibiotics24%26 of 110 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: 122024: 118%
Drugs named by CMS: 1 in 2024, 1 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. Christopher David Johnson graduated from New York University School of Medicine
Dr. Johnson graduated from New York University School of Medicine in 2007.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Christopher David Johnson accepts plans from 2 insurance carriers
Dr. Johnson is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Johnson accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Christopher David Johnson'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| 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. Christopher David Johnson
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. Christopher David Johnson's NPI number?
Dr. Christopher David Johnson's NPI number is 1720285620. It was assigned on July 3, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher David Johnson?
Dr. Christopher David Johnson is an emergency medicine physician in San Leandro, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Christopher David Johnson practice?
Dr. Johnson practices at 2500 Merced Street, San Leandro, CA 94577. Dr. Johnson's primary practice is San Leandro Medical Center in San Leandro, California, part of Kaiser Permanente. Dmand AI also links Dr. Johnson to 1 group practice or clinic.
What is Dr. Christopher David Johnson's office phone number?
The practice phone on file for Dr. Johnson is (510) 454-1000.
What is Dr. Christopher David Johnson's medical license number?
Dr. Johnson holds California license A115329.
Which hospitals is Dr. Christopher David Johnson affiliated with?
Dr. Johnson practices at San Leandro Medical Center in San Leandro, California.
What medical group is Dr. Christopher David Johnson part of?
Dr. Johnson is linked to The Permanente Medical Group, Inc.
Does Dr. Christopher David Johnson accept Medicare?
Yes. CMS data shows Dr. Johnson billed Medicare for 12 services in 2023.
How many Medicare patients does Dr. Christopher David Johnson see?
CMS counts 13 Medicare patients who saw Dr. Johnson in 2024, with an average age of 66.
Is Dr. Christopher David Johnson board certified?
Yes. Dr. Johnson is board certified in emergency medicine by the American Board of Emergency Medicine.
Show 5 more questionsShow fewer questions
What services does Dr. Christopher David Johnson bill to Medicare?
In 2023, Dr. Johnson's most billed Medicare services were emergency department visit (99285).
Where did Dr. Christopher David Johnson go to medical school?
Dr. Johnson graduated from New York University School of Medicine in 2007.
What drugs does Dr. Christopher David Johnson prescribe most?
In 2024 Medicare Part D data, Dr. Johnson's most prescribed drugs by claims were Ondansetron ODT.
How long has Dr. Christopher David Johnson been practicing?
Dr. Johnson graduated from medical school in 2007, 19 years ago.
What insurance does Dr. Christopher David Johnson accept?
Dr. Johnson is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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