Karl Frueauff Koshlap
Nurse Practitioner · San Francisco, CA
Karl Frueauff Koshlap is a nurse practitioner with a practice address in San Francisco, California, and NPI 1457986952, issued on Mar 5, 2020. Check the license (California 95019261, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karl Frueauff Koshlap
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 95019261 CA
RN1050088 DC
Self-reported in NPPES; status is on the state search - Practice location
- 400 Parnassus Ave FL 5, San Francisco, CA 94143
- Phone
- (415) 353-1616
- Enumerated
- Mar 5, 2020
- Record last updated
- May 25, 2022
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 8,223 in California → Look up another NPI →
Also registered at 400 Parnassus Ave FL 5
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karl Frueauff Koshlap in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95019261Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average nurse practitioner in 2024
84 Medicare Part D claims for 20 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 16 claims were for opioids.
Most prescribed
- Oxycodone Hcl16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Karl Frueauff Koshlap among 8,223 nurse practitioner records in California
Karl Frueauff Koshlap is one of 8,223 nurse practitioner records with a practice address in California. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 66% of them.
- NPI issued2020 · 66% of these records are older, 29% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 42% of these records are
- Record last updated2022 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nurse Practitioner providers in California
There are 8,223 nurse practitioner records in California.
All 8,223 in California → Every provider in San Francisco → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Rosalie Bravo, RN, NPSan Francisco, CA 941431740224690
- Mitchel Erickson, NPSan Francisco, CA 941431851330260
- Caroline Farless, NPSan Francisco, CA 941431720034960
- Colleen Irwin, NPSan Francisco, CA 941431316984362
- Susan Janson, DNSCSan Francisco, CA 941431437197597
- Peter Knott, RN, MSNSan Francisco, CA 941431295774602
- Geoffrey Latham, RN, NPSan Francisco, CA 941431356395842
- Sarah Maclachlan, FNPSan Francisco, CA 941431972540946
Common questions
What is Karl Frueauff Koshlap's NPI number?
Karl Frueauff Koshlap's National Provider Identifier (NPI) is 1457986952, issued on Mar 5, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Karl Frueauff Koshlap located?
The NPPES record lists a practice address at 400 Parnassus Ave FL 5, San Francisco, CA, 94143. Phone: (415) 353-1616. Providers update this record themselves, so call before visiting.
How can I verify Karl Frueauff Koshlap's license?
NPPES lists California license number 95019261, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Karl Frueauff Koshlap prescribe under Medicare Part D?
In 2024, Karl Frueauff Koshlap had 84 Medicare Part D claims for 20 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.