Dr. Daniel B. Klein, MD
- Part D claims, 2023
- 14
- Industry payments
- $570
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 27400 Hesperian Blvd, Hayward, CA 94545-4235
- Practice phone
- Call (510) 784-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Klein'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. Daniel B. Klein is an infectious disease specialist in Hayward, California
Dr. Klein practices in Hayward, California.
Dr. Klein's NPI, 1245318096, was assigned on November 1, 2006. Dr. Klein holds California license G28140.
- NPI
- 1245318096NPI Registry (opens in a new tab)
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Practice phone
- (510) 784-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Daniel B. Klein's practice address is in Hayward, California
Dr. Klein's practice address in the NPI Registry is 27400 Hesperian Blvd, Hayward, CA 94545-4235. The practice phone is (510) 784-4000.
- NPI Registry address27400 Hesperian Blvd, Hayward, CA 94545-4235Phone(510) 784-4000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Daniel B. Klein's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Klein practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Klein's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Daniel B. Klein is one of 1,054 infectious disease specialists in California
Infectious disease is Dr. Klein's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Klein is licensed in California.
Specialties and state licenses
- Infectious disease, CaliforniaPrimary
Infectious disease specialists near Dr. Klein
Counts of infectious disease specialists 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. Daniel B. Klein's patients have a median age of 51
Across all payers, Dmand AI patient panel data puts Dr. Klein's median patient age at 51, with 100% women.
Dr. Klein's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 51
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Dr. Daniel B. Klein wrote 14 Medicare Part D claims in 2023
In 2023, Dr. Klein wrote 14 Medicare Part D claims. They cover 1 drug, with $1,697 in total drug cost. In 2022, CMS named 17 claims across 1 drug.
Dr. Klein's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 172023: 1418%
Drugs named by CMS: 1 in 2023, 1 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Daniel B. Klein received $570 in industry payments from 2016 to 2024
CMS Open Payments shows 6 general payments to Dr. Klein from 3 drug and device companies from 2016 to 2024. Education make up the largest share, 83% of the total. Gilead Sciences, Inc. paid the most, $500.
General payments to Dr. Klein by program year, 2016 to 2024
General payments to Dr. Klein by kind, 2016 to 2024
- Education$47583%
- Food and beverage$7012%
- Travel and lodging$254%
Companies that paid Dr. Klein the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Daniel B. Klein'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 |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Daniel B. Klein
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. Daniel B. Klein's NPI number?
Dr. Daniel B. Klein's NPI number is 1245318096. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Daniel B. Klein?
Dr. Daniel B. Klein is an infectious disease specialist in Hayward, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Daniel B. Klein practice?
Dr. Klein practices at 27400 Hesperian Blvd, Hayward, CA 94545-4235.
What is Dr. Daniel B. Klein's office phone number?
The practice phone on file for Dr. Klein is (510) 784-4000.
What is Dr. Daniel B. Klein's medical license number?
Dr. Klein holds California license G28140.
What drugs does Dr. Daniel B. Klein prescribe most?
In 2023 Medicare Part D data, Dr. Klein's most prescribed drugs by claims were Typhim Vi.
Has Dr. Daniel B. Klein received payments from drug or device companies?
CMS Open Payments shows $570 in general payments to Dr. Klein from 3 companies from 2016 to 2024. The largest total came from Gilead Sciences, Inc.
How long has Dr. Daniel B. Klein been practicing?
Dr. Klein's NPI was assigned in 2006.
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