Dr. Fredrick H. Kleinsinger, MD
- Part D claims, 2022
- 11
- Industry payments
- $1,984
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2007
- Practice address
- 505 Parnassus Ave, San Francisco, CA 94131
- Practice phone
- Call (510) 752-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
Find Dr. Kleinsinger'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. Fredrick H. Kleinsinger is an internist in San Francisco, California
Dr. Kleinsinger practices with Baywell Health, a medical group.
Dr. Kleinsinger's NPI, 1245380062, was assigned on January 12, 2007. Dr. Kleinsinger holds California license G22594.
- NPI
- 1245380062NPI Registry (opens in a new tab)
- NPI enumeration date
- January 12, 2007
- NPI status
- Active
- Practice phone
- (510) 752-1000
- 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. Fredrick H. Kleinsinger's practice address is in San Francisco, California
Dr. Kleinsinger's practice address in the NPI Registry is 505 Parnassus Ave, San Francisco, CA 94131, in San Francisco County. The practice phone is (510) 752-1000.
- NPI Registry address505 Parnassus Ave, San Francisco, CA 94131 · San Francisco CountyPhone(510) 752-1000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Fredrick H. Kleinsinger is affiliated with 1 medical group
Dr. Kleinsinger is part of Baywell Health, a medical group in Oakland, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Fredrick H. Kleinsinger's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Kleinsinger practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Baywell Health | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Baywell Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Fredrick H. Kleinsinger is one of 16,751 internists in California
Internal medicine is Dr. Kleinsinger's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Kleinsinger is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Internists near Dr. Kleinsinger
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. Fredrick H. Kleinsinger wrote 11 Medicare Part D claims in 2022
In 2022, Dr. Kleinsinger wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $11 in total drug cost.
Dr. Kleinsinger's most prescribed drugs by claims, 2022
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Fredrick H. Kleinsinger received $1,984 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Kleinsinger from 1 drug or device company in 2024. Speaker and faculty fees make up the largest share, 100% of the total. Sanofi and Genzyme US Companies paid the most, $1,984.
Companies that paid Dr. Kleinsinger the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Fredrick H. Kleinsinger'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 | Dmand AI Affiliation 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. Fredrick H. Kleinsinger
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. Fredrick H. Kleinsinger's NPI number?
Dr. Fredrick H. Kleinsinger's NPI number is 1245380062. It was assigned on January 12, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Fredrick H. Kleinsinger?
Dr. Fredrick H. Kleinsinger is an internist in San Francisco, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Fredrick H. Kleinsinger practice?
Dr. Kleinsinger practices at 505 Parnassus Ave, San Francisco, CA 94131. Dr. Kleinsinger's primary practice is Baywell Health, a medical group.
What is Dr. Fredrick H. Kleinsinger's office phone number?
The practice phone on file for Dr. Kleinsinger is (510) 752-1000.
What is Dr. Fredrick H. Kleinsinger's medical license number?
Dr. Kleinsinger holds California license G22594.
What medical group is Dr. Fredrick H. Kleinsinger part of?
Dr. Kleinsinger is part of Baywell Health in Oakland, California.
What drugs does Dr. Fredrick H. Kleinsinger prescribe most?
In 2022 Medicare Part D data, Dr. Kleinsinger's most prescribed drugs by claims were Hydrochlorothiazide.
Has Dr. Fredrick H. Kleinsinger received payments from drug or device companies?
CMS Open Payments shows $1,984 in general payments to Dr. Kleinsinger from 1 company from 2024 to 2024. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. Fredrick H. Kleinsinger been practicing?
Dr. Kleinsinger's NPI was assigned in 2007.
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